Wind resource assessment over a complex terrain covered by forest using CFD simulations of neutral atmospheric boundary layer with OpenFOAM

Size: px
Start display at page:

Download "Wind resource assessment over a complex terrain covered by forest using CFD simulations of neutral atmospheric boundary layer with OpenFOAM"

Transcription

1 Wind resource assessment over a complex terrain covered by forest using CFD simulations of neutral atmospheric boundary layer with OpenFOAM Nikolaos Stergiannis nstergiannis.com nikolaos.stergiannis@vub.ac.be

2 Wind resource assessment over a complex terrain covered by forest using 27/04/ slide 1 Wind Energy Ø One of the fastest growing industries Ø EU Strategy on Climate Change for 2020 and beyond Ø 2015 a new record year: annual installations crossed the 62 GW Global cumulative installed wind capacity (GWEC Report 2016)

3 Wind resource assessment over a complex terrain covered by forest using 27/04/ slide 2 Industrial Challenges Wind Turbine Design ü rotor aerodynamics ü mechanical loads ü incoming flow field Wind Farm Design ü wind resource assessment ü wake interactions and losses ü CAPEX & OPEX Wind Farm Optimization ü terrain effects ü wake effects ü power output Wake Effects deficit of wind speed increasing turbulence

4 Wind resource assessment over a complex terrain covered by forest using 27/04/ slide 3 Total duration: 4 years Aim of the project: Develop a non-deterministic CFD software for wind energy Key points: Improved mathematical model for the wind turbines Atmospheric Boundary Layer over complex and flat terrain Uncertainty quantification on the wind conditions Open-source software (OpenFOAM) Final goal: Accurate and fast simulations of onshore and offshore wind farms

5 Wind resource assessment over a complex terrain covered by forest using 27/04/ slide 4 Wind resource assessment a crucial process for the successful development of a wind farm project Motivation growth of wind sector scarcity of available land wind energy installation on complex terrain is expected to increase low-cost industrial models fail in very complex sites inaccurate energy estimation

6 Wind resource assessment over a complex terrain covered by forest using 27/04/ slide 5 Site under investigation 70% covered by thick forest trees of 15 to 20 m height mainly neutral stratification unidirectional wind from ESE

7 Wind resource assessment over a complex terrain covered by forest using 27/04/ slide 6 Site under investigation

8 Wind resource assessment over a complex terrain covered by forest using 27/04/ slide 6 Site under investigation Wind Mast 2 Wind Mast 1

9 Wind resource assessment over a complex terrain covered by forest using 27/04/ slide 6 Site under investigation Wind Mast 2 Wind Mast 1 NW Wind direction

10 Wind resource assessment over a complex terrain covered by forest using 27/04/ slide 7 Computational domain generated with blockmesh snappyhexmesh final mesh characteristics 18 blocks 7.7Mi cells 6km x 6km x 3km 3 layers 1st cell height = 0.9m

11 Wind resource assessment over a complex terrain covered by forest using 27/04/ slide 7 Computational domain generated with blockmesh snappyhexmesh final mesh characteristics 18 blocks 7.7Mi cells 6km x 6km x 3km 3 layers 1st cell height = 0.9m

12 Wind resource assessment over a complex terrain covered by forest using 27/04/ slide 7 Computational domain generated with blockmesh snappyhexmesh final mesh characteristics 18 blocks 7.7Mi cells 6km x 6km x 3km 3 layers 1st cell height = 0.9m

13 Wind resource assessment over a complex terrain covered by forest using 27/04/ slide 8 Governing equations & boundary conditions assumptions* neutral ABL stratification homogeneous flow local equilibrium of k and ε * Richards, P. J., Hoxey R. P. Appropriate boundary conditions for computational wind engineering models using the k-ε turbulence model. 1993

14 Wind resource assessment over a complex terrain covered by forest using 27/04/ slide 9 Initial conditions terrain surface characteristic* forest canopy: z0 = 0.8 m * Troen, I., Lundtang Petersen, E.: European Wind Atlas. 1989

15 Wind resource assessment over a complex terrain covered by forest using 27/04/ slide 10 Numerical modelling Incompressible steady state solver simplefoam Turbulence modelling RANS modified k-ε turbulence model 2nd order numerical schemes 5000 iterations in total solution converged in 1500 iterations 10 hours on 16 CPUs of 3.3GHz Model coefficients * * Prospathopoulos J. M., Politis E. S. and Chaviaropoulos P. K.: Modelling wind turbine wake in complex terrain.

16 Wind resource assessment over a complex terrain covered by forest using 27/04/ slide 11 Preliminary results and discussion WM-1 at 78m height WM-2 at 78m height WM-1 CFD simulations WM-2 CFD simulations WM WM WM-2 CFD WM-1 CFD Height [m] 40 0 Velocity difference CFD: m/s Observations: m/s Axial velocity [m/s]

17 Wind resource assessment over a complex terrain covered by forest using 27/04/ slide 11 Preliminary results and discussion WM-1 at 78m height WM-2 at 78m height WM-1 CFD simulations WM-2 CFD simulations WM WM WM-2 CFD WM-1 CFD Height [m] 40 0 agreement in the absolute values is much less Velocity difference CFD: m/s Observations: m/s Axial velocity [m/s]

18 Wind resource assessment over a complex terrain covered by forest using 27/04/ slide 12 Conclusions Test case over a very complex site Terrain covered with dense forest canopy Neutral stratification and constant roughness have been assumed CFD simulations were capable to predict the velocity difference between wind masts Absolute values were not correct since the profile of WM1 used at the inlet Challenge Impose the correct inlet conditions to derived the desired profile at the WM1 location use a flat terrain before? use mesoscale models?

19 Wind resource assessment over a complex terrain covered by forest using 27/04/ slide 13 Future work Simulate over different wind sectors and compare with observations Include the local roughness map with non-uniform roughness length z0 Use mesoscale model to predict the inlet conditions Compare with MeteoDyn

20 Wind resource assessment over a complex terrain covered by forest using 27/04/ slide 14 QUESTIONS? A person who never made a mistake never tried anything new Albert Einstein nstergiannis@gmail.com Nikolaos.Stergiannis@vki.ac.be

21 Wind resource assessment over a complex terrain covered by forest using 27/04/ slide 14 QUESTIONS? A person who never made a mistake never tried anything new Albert Einstein nstergiannis@gmail.com Nikolaos.Stergiannis@vki.ac.be

On the use of rotor equivalent wind speed to improve CFD wind resource mapping. Yavor V. Hristov, PhD Plant Performance and Modeling Vestas TSS

On the use of rotor equivalent wind speed to improve CFD wind resource mapping. Yavor V. Hristov, PhD Plant Performance and Modeling Vestas TSS On the use of rotor equivalent wind speed to improve CFD wind resource mapping Yavor V. Hristov, PhD Plant Performance and Modeling Vestas TSS Firestorm- Number 53 on Top500 list from June 2011 14664 processors

More information

WAKE MODELING OF AN OFFSHORE WINDFARM USING OPENFOAM

WAKE MODELING OF AN OFFSHORE WINDFARM USING OPENFOAM WAKE MODELING OF AN OFFSHORE WINDFARM USING OPENFOAM Alireza Javaheri, Beatriz Canadillas UL International GmbH (DEWI), Ebertstr. 96, 26382 Wilhelmshaven, Germany Summery The premier task of this work

More information

Flow modelling hills complex terrain and other issues

Flow modelling hills complex terrain and other issues Flow modelling hills, complex terrain and other issues Modelling approaches sorted after complexity Rules of thumbs Codes and standards Linear model, 1 st order turbulence closure LINCOM/Wasp Reynolds-averaged

More information

Computational Fluid Dynamics

Computational Fluid Dynamics Computational Fluid Dynamics A better understanding of wind conditions across the whole turbine rotor INTRODUCTION If you are involved in onshore wind you have probably come across the term CFD before

More information

Forest Winds in Complex Terrain

Forest Winds in Complex Terrain Forest Winds in Complex Terrain Ilda Albuquerque 1 Contents Project Description Motivation Forest Complex Terrain Forested Complex Terrain 2 Project Description WAUDIT (Wind Resource Assessment Audit and

More information

Modelling the Output of a Flat-Roof Mounted Wind Turbine with an Edge Mounted Lip

Modelling the Output of a Flat-Roof Mounted Wind Turbine with an Edge Mounted Lip Modelling the Output of a Flat-Roof Mounted Wind Turbine with an Edge Mounted Lip S. J. Wylie 1, S. J. Watson 1, D. G. Infield 2 1 Centre for Renewable Energy Systems Technology, Department of Electronic

More information

Wind Flow Analysis on a Complex Terrain

Wind Flow Analysis on a Complex Terrain Wind Flow Analysis on a Complex Terrain A reliability study of a CFD tool on forested area including effects of forest module Eventuell figur/bild (Formatmall: Figure and picture text) Högskolan på Gotland

More information

Evaluation of four numerical wind flow models

Evaluation of four numerical wind flow models EWEA Resource Assessment Workshop 2013 Evaluation of four numerical wind flow models Michael C. Brower, PhD Chief Technical Officer Jose Vidal, MSc Consulting Services Europe & Latin America Manager Philippe

More information

Wind Flow Modeling: Are computationally intensive models more accurate?

Wind Flow Modeling: Are computationally intensive models more accurate? June 23 rd, 2015 Wind Flow Modeling: Are computationally intensive models more accurate? Philippe Beaucage, PhD Lead Research Scientist Michael C. Brower, PhD President & Chief Technical Officer Jose Vidal,

More information

Automated Steady and Transient CFD Analysis of Flow Over Complex Terrain for Risk Avoidance in Wind Turbine Micro-Siting

Automated Steady and Transient CFD Analysis of Flow Over Complex Terrain for Risk Avoidance in Wind Turbine Micro-Siting Automated Steady and Transient CFD Analysis of Flow Over Complex Terrain for Risk Avoidance in Wind Turbine Micro-Siting Global Flow Solutions, Vestas Wind Systems A/S Gregory S. Oxley, Yavor V. Hristov,

More information

Comparison of flow models

Comparison of flow models Comparison of flow models Rémi Gandoin (remga@dongenergy.dk) March 21st, 2011 Agenda 1. Presentation of DONG Energy 2. Today's presentation 1. Introduction 2. Purpose 3. Methods 4. Results 3. Discussion

More information

WESEP 594 Research Seminar

WESEP 594 Research Seminar WESEP 594 Research Seminar Aaron J Rosenberg Department of Aerospace Engineering Iowa State University Major: WESEP Co-major: Aerospace Engineering Motivation Increase Wind Energy Capture Betz limit: 59.3%

More information

Are Advanced Wind Flow Models More Accurate? A Test of Four Models

Are Advanced Wind Flow Models More Accurate? A Test of Four Models Are Advanced Wind Flow Models More Accurate? A Test of Four Models Philippe Beaucage, PhD Senior Research Scientist Michael C. Brower, PhD Chief Technical Officer Brazil Wind Power Conference 2012 Albany

More information

Surrounding buildings and wind pressure distribution on a high rise building

Surrounding buildings and wind pressure distribution on a high rise building Surrounding buildings and wind pressure distribution on a high rise building Conference or Workshop Item Accepted Version Luo, Z. (2008) Surrounding buildings and wind pressure distribution on a high rise

More information

10 th WindSim User Meeting June 2015, Tønsberg

10 th WindSim User Meeting June 2015, Tønsberg 10 th WindSim User Meeting 24-25 June 2015, Tønsberg Best Practice PRESENTED BY: Di Li 1 of 3 Content 1. Objective: Bankable AEP Site Suitability 2. Management: Balance on accuracy, timeline and resource

More information

Wind Farm Blockage: Searching for Suitable Validation Data

Wind Farm Blockage: Searching for Suitable Validation Data ENERGY Wind Farm Blockage: Searching for Suitable Validation Data James Bleeg, Mark Purcell, Renzo Ruisi, and Elizabeth Traiger 09 April 2018 1 DNV GL 2014 09 April 2018 SAFER, SMARTER, GREENER Wind turbine

More information

Tidal influence on offshore and coastal wind resource predictions at North Sea. Barbara Jimenez 1,2, Bernhard Lange 3, and Detlev Heinemann 1.

Tidal influence on offshore and coastal wind resource predictions at North Sea. Barbara Jimenez 1,2, Bernhard Lange 3, and Detlev Heinemann 1. Tidal influence on offshore and coastal wind resource predictions at North Sea Barbara Jimenez 1,2, Bernhard Lange 3, and Detlev Heinemann 1. 1 ForWind - Center for Wind Energy Research, University of

More information

RESOURCE DECREASE BY LARGE SCALE WIND FARMING

RESOURCE DECREASE BY LARGE SCALE WIND FARMING ECN-RX--4-14 RESOURCE DECREASE BY LARGE SCALE WIND FARMING G.P. Corten A.J. Brand This paper has been presented at the European Wind Energy Conference, London, -5 November, 4 NOVEMBER 4 Resource Decrease

More information

AIRFLOW GENERATION IN A TUNNEL USING A SACCARDO VENTILATION SYSTEM AGAINST THE BUOYANCY EFFECT PRODUCED BY A FIRE

AIRFLOW GENERATION IN A TUNNEL USING A SACCARDO VENTILATION SYSTEM AGAINST THE BUOYANCY EFFECT PRODUCED BY A FIRE - 247 - AIRFLOW GENERATION IN A TUNNEL USING A SACCARDO VENTILATION SYSTEM AGAINST THE BUOYANCY EFFECT PRODUCED BY A FIRE J D Castro a, C W Pope a and R D Matthews b a Mott MacDonald Ltd, St Anne House,

More information

Why does T7 underperform? Individual turbine performance relative to preconstruction estimates.

Why does T7 underperform? Individual turbine performance relative to preconstruction estimates. Why does T7 underperform? Individual turbine performance relative to preconstruction estimates. P. Stuart, N. Atkinson, A. Clerc, A. Ely, M. Smith, J. Cronin, M. Zhu & T Young. EWEA Technology Workshop

More information

Global Flow Solutions Mark Zagar, Cheng Hu-Hu, Yavor Hristov, Søren Holm Mogensen, Line Gulstad Vestas Wind & Site Competence Centre, Technology R&D

Global Flow Solutions Mark Zagar, Cheng Hu-Hu, Yavor Hristov, Søren Holm Mogensen, Line Gulstad Vestas Wind & Site Competence Centre, Technology R&D Global Flow Solutions Mark Zagar, Cheng Hu-Hu, Yavor Hristov, Søren Holm Mogensen, Line Gulstad Vestas Wind & Site Competence Centre, Technology R&D vestas.com Outline The atmospheric modeling capabilities

More information

Figure 1 Lake Ontario Offshore Study Area near East Toronto

Figure 1 Lake Ontario Offshore Study Area near East Toronto Wind Energy Resource Assessment and Forecasting for Sites on the Great Lakes Peter Taylor1,2, Jim Salmon2, Jack Simpson3, Wensong Weng1, Matthew Corkum1 and Hong Liu1 1 CRESS, York niversity, 2 Zephyr

More information

Effect of Diameter on the Aerodynamics of Sepaktakraw Balls, A Computational Study

Effect of Diameter on the Aerodynamics of Sepaktakraw Balls, A Computational Study ISSN 1750-9823 (print) International Journal of Sports Science and Engineering Vol. 03 (2009) No. 01, pp. 017-021 Effect of Diameter on the Aerodynamics of Sepaktakraw Balls, A Computational Study Zahari

More information

Large-eddy simulation study of effects of clearing in forest on wind turbines

Large-eddy simulation study of effects of clearing in forest on wind turbines Large-eddy simulation study of effects of clearing in forest on wind turbines J. Matsfelt 1 and L. Davidson 1 1 Chalmers University of Technology, Dep. of Mechanics and Maritime Sciences, Div. of Fluid

More information

Modelling atmospheric stability with CFD: The importance of tall profiles

Modelling atmospheric stability with CFD: The importance of tall profiles ENERGY Modelling atmospheric stability with CFD: The importance of tall profiles VindKraftNet Seminar on Profiles Jean-François Corbett, Global Head of CFD Service 1 SAFER, SMARTER, GREENER DNV GL CFD

More information

Study on wind turbine arrangement for offshore wind farms

Study on wind turbine arrangement for offshore wind farms Downloaded from orbit.dtu.dk on: Jul 01, 2018 Study on wind turbine arrangement for offshore wind farms Shen, Wen Zhong; Mikkelsen, Robert Flemming Published in: ICOWEOE-2011 Publication date: 2011 Document

More information

Numerical and Experimental Investigation of the Possibility of Forming the Wake Flow of Large Ships by Using the Vortex Generators

Numerical and Experimental Investigation of the Possibility of Forming the Wake Flow of Large Ships by Using the Vortex Generators Second International Symposium on Marine Propulsors smp 11, Hamburg, Germany, June 2011 Numerical and Experimental Investigation of the Possibility of Forming the Wake Flow of Large Ships by Using the

More information

Increased Project Bankability : Thailand's First Ground-Based LiDAR Wind Measurement Campaign

Increased Project Bankability : Thailand's First Ground-Based LiDAR Wind Measurement Campaign Increased Project Bankability : Thailand's First Ground-Based LiDAR Wind Measurement Campaign Authors: Velmurugan. k, Durga Bhavani, Ram kumar. B, Karim Fahssis As wind turbines size continue to grow with

More information

OPTIMIZING THE LENGTH OF AIR SUPPLY DUCT IN CROSS CONNECTIONS OF GOTTHARD BASE TUNNEL. Rehan Yousaf 1, Oliver Scherer 1

OPTIMIZING THE LENGTH OF AIR SUPPLY DUCT IN CROSS CONNECTIONS OF GOTTHARD BASE TUNNEL. Rehan Yousaf 1, Oliver Scherer 1 OPTIMIZING THE LENGTH OF AIR SUPPLY DUCT IN CROSS CONNECTIONS OF GOTTHARD BASE TUNNEL Rehan Yousaf 1, Oliver Scherer 1 1 Pöyry Infra Ltd, Zürich, Switzerland ABSTRACT Gotthard Base Tunnel with its 57 km

More information

Acknowledgements First of all, I would like to thank Matthew Homola and Nordkraft for allowing me to use measurements from Nygårdsfjellet wind farm. W

Acknowledgements First of all, I would like to thank Matthew Homola and Nordkraft for allowing me to use measurements from Nygårdsfjellet wind farm. W Acknowledgements First of all, I would like to thank Matthew Homola and Nordkraft for allowing me to use measurements from Nygårdsfjellet wind farm. Without this contribution, this thesis would have been

More information

Smooth hill validation in FUROW s wind resource module using OpenFOAM

Smooth hill validation in FUROW s wind resource module using OpenFOAM in for Wind flow Numerical Smooth hill validation in s wind resource module using 5 th Symposium on in Wind Energy (SOWE 2017), Javier Magdalena Saiz, José Marín Palacios, Jesús Matesanz García and Laura

More information

Centre for Offshore Renewable Energy Engineering, School of Energy, Environment and Agrifood, Cranfield University, Cranfield, MK43 0AL, UK 2

Centre for Offshore Renewable Energy Engineering, School of Energy, Environment and Agrifood, Cranfield University, Cranfield, MK43 0AL, UK 2 Fluid Structure Interaction Modelling of A Novel 10MW Vertical-Axis Wind Turbine Rotor Based on Computational Fluid Dynamics and Finite Element Analysis Lin Wang 1*, Athanasios Kolios 1, Pierre-Luc Delafin

More information

Measurement and simulation of the flow field around a triangular lattice meteorological mast

Measurement and simulation of the flow field around a triangular lattice meteorological mast Measurement and simulation of the flow field around a triangular lattice meteorological mast Matthew Stickland 1, Thomas Scanlon 1, Sylvie Fabre 1, Andrew Oldroyd 2 and Detlef Kindler 3 1. Department of

More information

Fuga. - Validating a wake model for offshore wind farms. Søren Ott, Morten Nielsen & Kurt Shaldemose Hansen

Fuga. - Validating a wake model for offshore wind farms. Søren Ott, Morten Nielsen & Kurt Shaldemose Hansen Fuga - Validating a wake model for offshore wind farms Søren Ott, Morten Nielsen & Kurt Shaldemose Hansen 28-06- Outline What is Fuga? Model validation: which assumptions are tested? Met data interpretation:

More information

Wind shear and its effect on wind turbine noise assessment Report by David McLaughlin MIOA, of SgurrEnergy

Wind shear and its effect on wind turbine noise assessment Report by David McLaughlin MIOA, of SgurrEnergy Wind shear and its effect on wind turbine noise assessment Report by David McLaughlin MIOA, of SgurrEnergy Motivation Wind shear is widely misunderstood in the context of noise assessments. Bowdler et

More information

Determination of the wind pressure distribution on the facade of the triangularly shaped high-rise building structure

Determination of the wind pressure distribution on the facade of the triangularly shaped high-rise building structure Determination of the wind pressure distribution on the facade of the triangularly shaped high-rise building structure Norbert Jendzelovsky 1,*, Roland Antal 1 and Lenka Konecna 1 1 STU in Bratislava, Faculty

More information

&)' VWXG\ DQG ZLQG IORZ PRGHOLQJ RYHU GLIIHUHQW WHUUDLQ W\SHV

&)' VWXG\ DQG ZLQG IORZ PRGHOLQJ RYHU GLIIHUHQW WHUUDLQ W\SHV ɇⱥɍɑɇɂɍɋɍⱦɉȼȿɇⱥɋɍɋȿɇɋʉɂəɍɇɂȼȿɋɋɂɍȿɍ-2015 ɬɨɦ54ɫɟɪɢɹ1.2 &)'VWXG\DQGZLQGIORZPRGHOLQJRYHUGLIIHUHQWWHUUDLQW\SHV Angel Terziev Kiril Mavrov CFD study and wind flow modeling over different terrain types: Worldwide,

More information

Windcube FCR measurements

Windcube FCR measurements Windcube FCR measurements Principles, performance and recommendations for use of the Flow Complexity Recognition (FCR) algorithm for the Windcube ground-based Lidar Summary: As with any remote sensor,

More information

Session 7: Wind Modelling

Session 7: Wind Modelling State of the Art in Application of Flow Models for Micrositing M. Strack, V. Riedel, DEWI Wilhelmshaven German Wind Energy Institute GmbH (DEWI), Ebertstr. 96, D-26382 Wilhelmshaven, email: m.strack@dewi.de

More information

CFD Analysis of Giromill Type Vertical Axis Wind Turbine

CFD Analysis of Giromill Type Vertical Axis Wind Turbine 242 CFD Analysis Giromill Type Vertical Axis Wind Turbine K. Sainath 1, T. Ravi 2, Suresh Akella 3, P. Madhu Sudhan 4 1 Associate Pressor, Department Mechanical Engineering, Sreyas Inst. Engg. & Tech.,

More information

Development of virtual 3D human manikin with integrated breathing functionality

Development of virtual 3D human manikin with integrated breathing functionality SAT-9.2-2-HT-06 Development of virtual 3D human manikin with integrated breathing functionality Martin Ivanov Development of virtual 3D human manikin with integrated breathing functionality: The presented

More information

Available online at ScienceDirect. Procedia Engineering 126 (2015 )

Available online at  ScienceDirect. Procedia Engineering 126 (2015 ) Available online at www.sciencedirect.com ScienceDirect Procedia Engineering 126 (2015 ) 542 548 7th International Conference on Fluid Mechanics, ICFM7 Terrain effects on characteristics of surface wind

More information

WINDA-GALES wind damage probability planning tool

WINDA-GALES wind damage probability planning tool WINDA-GALES wind damage probability planning tool Kristina Blennow 1, Barry Gardiner 2, Neil Sang 1, Magnus Mossberg 3 1. Faculty of Landscape Planning, Horticulture and Agricultural Science, SLU, Alnarp,

More information

2 Asymptotic speed deficit from boundary layer considerations

2 Asymptotic speed deficit from boundary layer considerations EWEC Techn.track Wake, paper ID 65 WAKE DECAY CONSTANT FOR THE INFINITE WIND TURBINE ARRAY Application of asymptotic speed deficit concept to existing engineering wake model. Ole Steen Rathmann, Risø-DTU

More information

The evolution of the application of CFD on pedestrian wind comfort in engineering practice, a validation study

The evolution of the application of CFD on pedestrian wind comfort in engineering practice, a validation study EACWE 5 Florence, Italy 19 th 23 rd July 2009 Flying Sphere image Museo Ideale L. Da Vinci The evolution of the application of CFD on pedestrian wind comfort in engineering practice, a validation study

More information

The Effect of a Meteorological Tower on its Top-Mounted Anemometer

The Effect of a Meteorological Tower on its Top-Mounted Anemometer The Effect of a Meteorological Tower on its Top-Mounted Anemometer Dimitri Perrin a,b Niall McMahon a,b, Martin Crane a,b Heather J. Ruskin a,b Lawrence Crane b Brian Hurley c a School of Computing, Dublin

More information

Optimization of a Wing-Sail shape for a small boat

Optimization of a Wing-Sail shape for a small boat STAR Global Conference 2014 Vienna, March 17-19 Optimization of a Wing-Sail shape for a small boat G. Lombardi, F. Cartoni, M. Maganzi Dept. of Civil and Industrial Engineering of Pisa Aeronautical Section

More information

Workshop 1: Bubbly Flow in a Rectangular Bubble Column. Multiphase Flow Modeling In ANSYS CFX Release ANSYS, Inc. WS1-1 Release 14.

Workshop 1: Bubbly Flow in a Rectangular Bubble Column. Multiphase Flow Modeling In ANSYS CFX Release ANSYS, Inc. WS1-1 Release 14. Workshop 1: Bubbly Flow in a Rectangular Bubble Column 14. 5 Release Multiphase Flow Modeling In ANSYS CFX 2013 ANSYS, Inc. WS1-1 Release 14.5 Introduction This workshop models the dispersion of air bubbles

More information

Full scale measurements and simulations of the wind speed in the close proximity of the building skin

Full scale measurements and simulations of the wind speed in the close proximity of the building skin Full scale measurements and simulations of the wind speed in the close proximity of the building skin Radoslav Ponechal 1,* and Peter Juras 1 1 University of Zilina, Faculty of Civil Engineering, Department

More information

Racecar Rear Wing Setup Optimization via 2D CFD Simulations

Racecar Rear Wing Setup Optimization via 2D CFD Simulations Racecar Rear Wing Setup Optimization via 2D CFD Simulations Simulating Systems Ground Transportation Motorsport Graduate Engineer Test & Development Lotus Cars STAR Global Conference 2014 Vienna Austria

More information

The Wind Resource: Prospecting for Good Sites

The Wind Resource: Prospecting for Good Sites The Wind Resource: Prospecting for Good Sites Bruce Bailey, President AWS Truewind, LLC 255 Fuller Road Albany, NY 12203 bbailey@awstruewind.com Talk Topics Causes of Wind Resource Impacts on Project Viability

More information

How an extreme wind atlas is made

How an extreme wind atlas is made How an extreme wind atlas is made AC Kruger South African Weather Service X Larsén DTU Wind Energy Wind 1 Atlas for South Africa (WASA) Why do we need extreme wind statistics? Statistical background for

More information

Session 2a: Wind power spatial planning techniques. IRENA Global Atlas Spatial planning techniques 2-day seminar

Session 2a: Wind power spatial planning techniques. IRENA Global Atlas Spatial planning techniques 2-day seminar Session 2a: Wind power spatial planning techniques IRENA Global Atlas Spatial planning techniques 2-day seminar Central questions we want to answer After having identified those areas which are potentially

More information

Advanced pre and post-processing in Windsim

Advanced pre and post-processing in Windsim University of Perugia Department of Industrial Engineering Francesco Castellani Advanced pre and post-processing in Windsim CONTENTS Pre-processing 1) Domain control: *.gws construction 2) Advanced grid

More information

Numerical Investigation of Multi Airfoil Effect on Performance Increase of Wind Turbine

Numerical Investigation of Multi Airfoil Effect on Performance Increase of Wind Turbine International Journal of Engineering & Applied Sciences (IJEAS) International Journal of Engineering Applied Sciences (IJEAS) Vol.9, Issue 3 (2017) 75-86 Vol.x, Issue x(201x)x-xx http://dx.doi.org/10.24107/ijeas.332075

More information

Investigation on 3-D Wing of commercial Aeroplane with Aerofoil NACA 2415 Using CFD Fluent

Investigation on 3-D Wing of commercial Aeroplane with Aerofoil NACA 2415 Using CFD Fluent Investigation on 3-D of commercial Aeroplane with Aerofoil NACA 2415 Using CFD Fluent Rohit Jain 1, Mr. Sandeep Jain 2, Mr. Lokesh Bajpai 3 1PG Student, 2 Associate Professor, 3 Professor & Head 1 2 3

More information

OPTIMIZATION OF SINGLE STAGE AXIAL FLOW COMPRESSOR FOR DIFFERENT ROTATIONAL SPEED USING CFD

OPTIMIZATION OF SINGLE STAGE AXIAL FLOW COMPRESSOR FOR DIFFERENT ROTATIONAL SPEED USING CFD http:// OPTIMIZATION OF SINGLE STAGE AXIAL FLOW COMPRESSOR FOR DIFFERENT ROTATIONAL SPEED USING CFD Anand Kumar S malipatil 1, Anantharaja M.H 2 1,2 Department of Thermal Power Engineering, VTU-RO Gulbarga,

More information

Session 2: Wind power spatial planning techniques

Session 2: Wind power spatial planning techniques Session 2: Wind power spatial planning techniques IRENA Global Atlas Spatial planning techniques 2-day seminar Central questions we want to answer After having identified those areas which are potentially

More information

Investigation on Deep-Array Wake Losses Under Stable Atmospheric Conditions

Investigation on Deep-Array Wake Losses Under Stable Atmospheric Conditions Investigation on Deep-Array Wake Losses Under Stable Atmospheric Conditions Yavor Hristov, Mark Zagar, Seonghyeon Hahn, Gregory Oxley Plant Siting and Forecasting Vestas Wind Systems A/S Introduction Introduction

More information

Wind in complex terrain. A comparison of WAsP and two CFD-models.

Wind in complex terrain. A comparison of WAsP and two CFD-models. Wind in complex terrain. A comparison of WAsP and two CFD-models. Erik Berge Arne R. Gravdahl Jan Schelling Lars Tallhaug Ove Undheim Kjeller Vindteknikk AS Vector AS Hydro Oil & Energy Kjeller Vindteknikk

More information

Wind Plant Simulation and Validation Jonathan Naughton Department of Mechanical Engineering University of Wyoming

Wind Plant Simulation and Validation Jonathan Naughton Department of Mechanical Engineering University of Wyoming Wind Plant Simulation and Validation Jonathan Naughton Department of Mechanical Engineering University of Wyoming 1 Overview Wind s Success Wind s Challenges Wind Plant Simulation and Validation Summary

More information

6.28 PREDICTION OF FOG EPISODES AT THE AIRPORT OF MADRID- BARAJAS USING DIFFERENT MODELING APPROACHES

6.28 PREDICTION OF FOG EPISODES AT THE AIRPORT OF MADRID- BARAJAS USING DIFFERENT MODELING APPROACHES 6.28 PREDICTION OF FOG EPISODES AT THE AIRPORT OF MADRID- BARAJAS USING DIFFERENT MODELING APPROACHES Cecilia Soriano 1, Darío Cano 2, Enric Terradellas 3 and Bill Physick 4 1 Universitat Politècnica de

More information

The Influence of Ocean Surface Waves on Offshore Wind Turbine Aerodynamics. Ali Al Sam

The Influence of Ocean Surface Waves on Offshore Wind Turbine Aerodynamics. Ali Al Sam The Influence of Ocean Surface Waves on Offshore Wind Turbine Aerodynamics Ali Al Sam What I m going to wear today? Do I need to leave early to get to work? Taking buss or riding bike? Where will we drink

More information

Complex terrain wind resource estimation with the wind-atlas method: Prediction errors using linearized and nonlinear CFD micro-scale models

Complex terrain wind resource estimation with the wind-atlas method: Prediction errors using linearized and nonlinear CFD micro-scale models Downloaded from orbit.dtu.dk on: Dec 17, 2017 Complex terrain wind resource estimation with the wind-atlas method: Prediction errors using linearized and nonlinear CFD micro-scale models Troen, Ib; Bechmann,

More information

IMPROVEMENT OF THE WIND FARM MODEL FLAP FOR OFFSHORE APPLICATIONS

IMPROVEMENT OF THE WIND FARM MODEL FLAP FOR OFFSHORE APPLICATIONS IMPROVEMENT OF THE WIND FARM MODEL FLAP FOR OFFSHORE APPLICATIONS Bernhard Lange(1), Hans-Peter Waldl(1)(2), Rebecca Barthelmie(3), Algert Gil Guerrero(1)(4), Detlev Heinemann(1) (1) Dept. of Energy and

More information

Energy from wind and water extracted by Horizontal Axis Turbine

Energy from wind and water extracted by Horizontal Axis Turbine Energy from wind and water extracted by Horizontal Axis Turbine Wind turbines in complex terrain (NREL) Instream MHK turbines in complex bathymetry (VP East channel NewYork) Common features? 1) horizontal

More information

Outline. Wind Turbine Siting. Roughness. Wind Farm Design 4/7/2015

Outline. Wind Turbine Siting. Roughness. Wind Farm Design 4/7/2015 Wind Turbine Siting Andrew Kusiak 2139 Seamans Center Iowa City, Iowa 52242-1527 andrew-kusiak@uiowa.edu Tel: 319-335-5934 Fax: 319-335-5669 http://www.icaen.uiowa.edu/~ankusiak Terrain roughness Escarpments

More information

Aerodynamic study of a cyclist s moving legs using an innovative approach

Aerodynamic study of a cyclist s moving legs using an innovative approach Aerodynamic study of a cyclist s moving legs using an innovative approach Francesco Pozzetti 30 September 2017 Abstract During a period of four weeks in September, I completed a research project in fluid

More information

Investigation and validation of wake model combinations for large wind farm modelling in neutral boundary layers

Investigation and validation of wake model combinations for large wind farm modelling in neutral boundary layers Investigation and validation of wake model combinations for large wind farm modelling in neutral boundary layers Eric TROMEUR(1), Sophie PUYGRENIER(1),Stéphane SANQUER(1) (1) Meteodyn France, 14bd Winston

More information

Large eddy simulation of atmospheric flows over the Bolund hill

Large eddy simulation of atmospheric flows over the Bolund hill Large eddy simulation of atmospheric flows over the Bolund hill Ashvinkumar Chaudhari* 1), Mahdi Ghaderi Masouleh 1), Gábor Janiga 2), Jari Hämäläinen 1), Antti Hellsten 3) 1) Department of Mathematics

More information

THEORETICAL EVALUATION OF FLOW THROUGH CENTRIFUGAL COMPRESSOR STAGE

THEORETICAL EVALUATION OF FLOW THROUGH CENTRIFUGAL COMPRESSOR STAGE THEORETICAL EVALUATION OF FLOW THROUGH CENTRIFUGAL COMPRESSOR STAGE S.Ramamurthy 1, R.Rajendran 1, R. S. Dileep Kumar 2 1 Scientist, Propulsion Division, National Aerospace Laboratories, Bangalore-560017,ramamurthy_srm@yahoo.com

More information

Predicting and simulating wake in stable conditions

Predicting and simulating wake in stable conditions Predicting and simulating wake in stable conditions Model chain evaluation and an example Mark Žagar, Gregory S. Oxley, Yavor V. Hristov Vestas Wind Systems A/S, Plant Siting and Forecasting 15 January

More information

Validation of Measurements from a ZephIR Lidar

Validation of Measurements from a ZephIR Lidar Validation of Measurements from a ZephIR Lidar Peter Argyle, Simon Watson CREST, Loughborough University, Loughborough, United Kingdom p.argyle@lboro.ac.uk INTRODUCTION Wind farm construction projects

More information

Offshore Micrositing - Meeting The Challenge

Offshore Micrositing - Meeting The Challenge Offshore Micrositing - Meeting The Challenge V. Barth; DEWI GmbH, Oldenburg English Introduction Offshore wind is increasingly gaining importance in the wind energy sector. While countries like the UK

More information

COMPARISONS OF COMPUTATIONAL FLUID DYNAMICS AND

COMPARISONS OF COMPUTATIONAL FLUID DYNAMICS AND The Seventh Asia-Pacific Conference on Wind Engineering, November 8-12, 2009, Taipei, Taiwan COMPARISONS OF COMPUTATIONAL FLUID DYNAMICS AND WIND TUNNEL EXPERIMENTS FOR PEDESTRIAN WIND ENVIRONMENTS Chin-Hsien

More information

CFD Analysis ofwind Turbine Airfoil at Various Angles of Attack

CFD Analysis ofwind Turbine Airfoil at Various Angles of Attack IOSR Journal of Mechanical and Civil Engineering (IOSR-JMCE) e-issn: 2278-1684,p-ISSN: 2320-334X, Volume 13, Issue 4 Ver. II (Jul. - Aug. 2016), PP 18-24 www.iosrjournals.org CFD Analysis ofwind Turbine

More information

EE 364B: Wind Farm Layout Optimization via Sequential Convex Programming

EE 364B: Wind Farm Layout Optimization via Sequential Convex Programming EE 364B: Wind Farm Layout Optimization via Sequential Convex Programming Jinkyoo Park 1 Introduction In a wind farm, the wakes formed by upstream wind turbines decrease the power outputs of downstream

More information

Available online at ScienceDirect. Procedia Engineering 112 (2015 )

Available online at   ScienceDirect. Procedia Engineering 112 (2015 ) Available online at www.sciencedirect.com ScienceDirect Procedia Engineering 112 (2015 ) 418 423 7th Asia-Pacific Congress on Sports Technology, APCST 2015 Comparison of the aerodynamic performance of

More information

Aerodynamic Performance of Trains with Different Longitudinal Section Lines under Crosswind

Aerodynamic Performance of Trains with Different Longitudinal Section Lines under Crosswind 2017 2nd International Conference on Industrial Aerodynamics (ICIA 2017) ISBN: 978-1-60595-481-3 Aerodynamic Performance of Trains with Different Longitudinal Section Lines under Crosswind Taizhong Xie

More information

Computational analysis of fish survival at the John Day Powerhouse

Computational analysis of fish survival at the John Day Powerhouse Computational analysis of fish survival at the John Day Powerhouse Jim Kiel Laurie Ebner Introduction Design a CFD model that can be used to predict the pressures in the turbine runner environment. What

More information

A COMPARATIVE STUDY OF MIX FLOW PUMP IMPELLER CFD ANALYSIS AND EXPERIMENTAL DATA OF SUBMERSIBLE PUMP

A COMPARATIVE STUDY OF MIX FLOW PUMP IMPELLER CFD ANALYSIS AND EXPERIMENTAL DATA OF SUBMERSIBLE PUMP IMPACT: International Journal of Research in Engineering & Technology (IMPACT: IJRET) ISSN 2321-8843 Vol. 1, Issue 3, Aug 2013, 57-64 Impact Journals A COMPARATIVE STUDY OF MIX FLOW PUMP IMPELLER CFD ANALYSIS

More information

FLOW CONSIDERATIONS IN INDUSTRIAL SILENCER DESIGN

FLOW CONSIDERATIONS IN INDUSTRIAL SILENCER DESIGN FLOW CONSIDERATIONS IN INDUSTRIAL SILENCER DESIGN George Feng, Kinetics Noise Control, Inc., 3570 Nashua Drive, Mississauga, Ontario Vadim Akishin, Kinetics Noise Control, Inc., 3570 Nashua Drive, Mississauga,

More information

EERA DTOC wake results offshore

EERA DTOC wake results offshore EERA DTOC wake results offshore Charlotte Hasager, Kurt Schaldemose Hansen, Pierre-Elouan Réthoré, Søren Ott, Jake Badger, Gerard Schepers, Ole Rathmann, Elena Cantero, Giorgos Sieros, Takis Chaviaropoulos,

More information

Wake effects at Horns Rev and their influence on energy production. Kraftværksvej 53 Frederiksborgvej 399. Ph.: Ph.

Wake effects at Horns Rev and their influence on energy production. Kraftværksvej 53 Frederiksborgvej 399. Ph.: Ph. Wake effects at Horns Rev and their influence on energy production Martin Méchali (1)(*), Rebecca Barthelmie (2), Sten Frandsen (2), Leo Jensen (1), Pierre-Elouan Réthoré (2) (1) Elsam Engineering (EE)

More information

3D-simulation of the turbulent wake behind a wind turbine

3D-simulation of the turbulent wake behind a wind turbine Journal of Physics: Conference Series 3D-simulation of the turbulent wake behind a wind turbine To cite this article: Steffen Wußow et al 2007 J. Phys.: Conf. Ser. 75 012033 View the article online for

More information

Analysis on Turbulent Flows using Large-eddy Simulation on the Seaside Complex Terrain

Analysis on Turbulent Flows using Large-eddy Simulation on the Seaside Complex Terrain Analysis on Turbulent Flows using Large-eddy Simulation on the Seaside Complex Terrain Takeshi Kamio, Makoto Iida, Chuichi Arakawa The University of Tokyo, Japan Outline Backgrounds and Purposes Complex

More information

Wind Flow Validation Summary

Wind Flow Validation Summary IBHS Research Center Validation of Wind Capabilities The Insurance Institute for Business & Home Safety (IBHS) Research Center full-scale test facility provides opportunities to simulate natural wind conditions

More information

The Usage of Propeller Tunnels For Higher Efficiency and Lower Vibration. M. Burak Şamşul

The Usage of Propeller Tunnels For Higher Efficiency and Lower Vibration. M. Burak Şamşul The Usage of Propeller Tunnels For Higher Efficiency and Lower Vibration M. Burak Şamşul ITU AYOC 2014 - Milper Pervane Teknolojileri Company Profile MILPER is established in 2011 as a Research and Development

More information

The study on micro-location of wind-electric field in the complex terrain

The study on micro-location of wind-electric field in the complex terrain Academia Journal of Scientific Research 3(3): 000-000, February 2019 DOI: 10.15413/ajsr.2019.2006 ISSN 2315-7712 2019 Academia Publishing Research Paper The study on micro-location of wind-electric field

More information

A numerical simulation of oil spill in Istanbul strait

A numerical simulation of oil spill in Istanbul strait Coastal Engineering 135 A numerical simulation of oil spill in Istanbul strait S. Can 1, S. Nishio 2 & M. Uchida 2 1 Maritime Faculty Istanbul Technical University, Turkey 2 Faculty of Maritime Sciences,

More information

Wind Resource Assessment Østerild National Test Centre for Large Wind Turbines

Wind Resource Assessment Østerild National Test Centre for Large Wind Turbines Downloaded from orbit.dtu.dk on: Jan 21, 2018 Wind Resource Assessment Østerild National Test Centre for Large Wind Turbines Hansen, Brian Ohrbeck; Courtney, Michael; Mortensen, Niels Gylling Publication

More information

Stefan Emeis

Stefan Emeis The Physics of Wind Park Optimization Stefan Emeis stefan.emeis@kit.edu INSTITUTE OF METEOROLOGY AND CLIMATE RESEARCH, Photo: Vattenfall/C. Steiness KIT University of the State of Baden-Wuerttemberg and

More information

Aerodynamic Analyses of Horizontal Axis Wind Turbine By Different Blade Airfoil Using Computer Program

Aerodynamic Analyses of Horizontal Axis Wind Turbine By Different Blade Airfoil Using Computer Program ISSN : 2250-3021 Aerodynamic Analyses of Horizontal Axis Wind Turbine By Different Blade Airfoil Using Computer Program ARVIND SINGH RATHORE 1, SIRAJ AHMED 2 1 (Department of Mechanical Engineering Maulana

More information

Conditions for Offshore Wind Energy Use

Conditions for Offshore Wind Energy Use Carl von Ossietzky Universität Oldenburg Institute of Physics Energy Meteorology Group Detlev Heinemann Conditions for Offshore Wind Energy Use Detlev Heinemann ForWind Carl von Ossietzky Universität Oldenburg

More information

Unsteady Aerodynamics of Tandem Airfoils Pitching in Phase

Unsteady Aerodynamics of Tandem Airfoils Pitching in Phase Unsteady Aerodynamics of Tandem Airfoils Pitching in Phase Ravindra A Shirsath and Rinku Mukherjee Abstract This paper presents the results of a numerical simulation of unsteady, incompressible and viscous

More information

The EllipSys2D/3D code and its application within wind turbine aerodynamics

The EllipSys2D/3D code and its application within wind turbine aerodynamics The EllipSys2D/3D code and its application within wind turbine aerodynamics Niels N. Sørensen Wind Energy Department, Risø DTU National Laboratory for Sustainable Energy and Dep. Civil Engineering, Aalborg

More information

High fidelity gust simulations around a transonic airfoil

High fidelity gust simulations around a transonic airfoil High fidelity gust simulations around a transonic airfoil AEROGUST Workshop 27 th - 28 th April 2017, University of Liverpool Presented by B. Tartinville (Numeca) Outline of the presentation 1Objectives

More information

Wind Project Siting & Resource Assessment

Wind Project Siting & Resource Assessment Wind Project Siting & Resource Assessment David DeLuca, Project Manager AWS Truewind, LLC 463 New Karner Road Albany, NY 12205 ddeluca@awstruewind.com www.awstruewind.com AWS Truewind - Overview Industry

More information

New Technologies applied to the design and optimization of tunnel ventilation systems

New Technologies applied to the design and optimization of tunnel ventilation systems New Technologies applied to the design and optimization of tunnel ventilation systems Ing. Justo Suárez Area Manager - ZITRON Dot. Ing. Massimiliano Bringiotti Managing Director - GEOTUNNEL Ing. Ana Belén

More information

Aspects of Using CFD for Wind Comfort Modeling Around Tall Buildings

Aspects of Using CFD for Wind Comfort Modeling Around Tall Buildings 8 th International Congress on Advances in Civil Engineering, 15-17 September 2008 Eastern Mediterranean University, Famagusta, North Cyprus Aspects of Using CFD for Wind Comfort Modeling Around Tall Buildings

More information