Advanced pre and post-processing in Windsim
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1 University of Perugia Department of Industrial Engineering Francesco Castellani Advanced pre and post-processing in Windsim
2 CONTENTS Pre-processing 1) Domain control: *.gws construction 2) Advanced grid control: *.bws construction. Post-processing 3) Layout implementation: *.ows construction 4) Power curve adjustment 5) Wind shear map 6) AEP map 7) Time history transfer procedure and the power time history calculation
3 1/7 Domain control: *.gws construction Terrain data *.ascii file RGB roughness data from Corine Land Cover
4 1/7 Domain control: *.gws construction Terrain data *.ascii file RGB roughness data from Corine Land Cover Domain rotation Roughness matrix generation Domain rotation procedure Writing the *.gws file
5 1/7 Domain control: *.gws construction DOMAIN ROTATION PROCEDURE
6 1/7 Domain control: *.gws construction DOMAIN ROTATION PROCEDURE
7 1/7 Domain control: *.gws construction RUNNING WINDSIM WITH ORTHOGONAL SECTORS
8 1/7 Domain control: *.gws construction
9 2/7 Advanced grid control: *.bws construction. Grid refinement for obstacles or turbines definition
10 2/7 Advanced grid control: *.bws construction.
11 2/7 Advanced grid control: *.bws construction.
12 2/7 Advanced grid control: *.bws construction. FUTURE WORK 1.Assign to each rotor cells the right drag force coefficient 2.Using domain rotation to align the turbine axis to the wind direction in non-orthogonal sectors
13 3/7 Layout implementation: *.ows construction Autocad list text Ascii file X,Y file Power curve and hub height Writing *.ows Importing objects
14 4/7 Power curve adjustment Calculation using the Windsim energy module
15 4/7 Power curve adjustment Calculation using the Windsim energy module
16 4/7 Power curve adjustment
17 4/7 Power curve adjustment Calculation using the adjusted power curve
18 5/7 Wind shear map Using two wind map calculated for two different levels is possible to estimate the resulting value of for each point of the domain
19 5/7 Wind shear map Average wind shear map
20 5/7 Wind shear map Directional wind shear map
21 *.rsf file 6/7 AEP map Height a.s.l. Air density Weibull parameters PDF POWER CURVE GROSS A.E.P.
22 6/7 AEP map
23 directional shift speedup 7/7 Time history transfer procedure and the power time history calculation Wind profile data (energy module) Speedup and directional shift calculation direction 10 Transferring time history data direction Results are consistent with the new windsim th transfer procedure
24 TI ratio 7/7 Time history transfer procedure and the power time history calculation direction FUTURE WORK Transferring turbulence intensity data
25 P (kw) 7/7 Time history transfer procedure and the power time history calculation It is possible to transfer the time history in each turbine s position in order to calculate the power history
26 7/7 Time history transfer procedure and the power time history calculation Average production data are different from the estimation of the energy module: this is due to the speedup interpolations. Higher differences were discovered in very complex terrain sites.
27 7/7 Time history transfer procedure and the power time history calculation Estimating the Weibull parameter for each turbine and calculating the reference wind speed. A k Vref (m/s) turbine turbine
28 CONCLUSIONS Many things can still be done using automatic procedures before and after the wind field run An advanced grid control can be very useful for turbines and obstacles local simulations The AEP map can be useful for an automatic optimization procedure of the layout Transferred climatologies should be used in the turbine s location for production estimation
29 Thank you very much for your attention Looking forward to meet you for the next Windsim Usermeeting
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