Christian

Dear WAsP Team, in one of the latest projects an error in WAT occured when trying to save the project. Error message below: EListError occurred in WAT 'Savesetup1Click' routine Exception message = List index out of bounds (0) Do you know this error, can it be fixed somehow? Or is it a problem with our input data, the windfarm/area is quite large. Cheers, Christian

Dear WAsP Team, is it possible to install WAsP Eng2 and WAsP Eng3 on one computer? Thanks in advance! Best Regards, Christian

Hi everyone, I just discovered something in WAT I do not understand. I took the characteristic turbulence from the turbulence table in WAT, after that I changed only the IEC to edition 3 and compared the representative turbulence with the characteristic turbulence. The representative turbulence was showing lower values than the characteristic turbulence. How is this possible? As I understand the representative ambient turbulence is calculated according to: Irep=Imean+1,28*Istdv and the characteristic turbulence according to: Ichar=Imean+1*Istdv. Therefore the representative turbulence should be larger than the characteristic, right? Thanks in advance! Christian Finally the settings and the values: ------------------------------------------------------------------------------ [Wake modelling] Wake effect not included Calculation with fixed exposure angle Apply Ct=7/u rule for thrust coefficinet in added-wake-turbulence formula No correction for wake deflection Include turbulence form distant turbines [Turbulence modelling] Directional wind distribution applied Directional turbulence distribution applied Woehler exp not applied for directional averaging No park effect on ambient turbulence Variable turbulence intensity within 10-min periods Correction for 10-min windowing Add speed dependence on turbulence distribution [IEC 61400-1 complex terrain turbulence factors] No complex-terrain effect on ambient turbulence Assess complex terrain by new IEC 61400-1/A1 rules Fitted slope may have transversal component Dont use WEng TI estimates for complex-terrain factors Preferred TI model is WEng results corrected by ref data TI model second option is WEng results corrected by IEC model ------------------------------------------------------------------------------ Characteristic 10-min turbulence intensity [%] at WEC_1 u 0 ----------- 1 71.3 2 41.2 3 30.5 4 25.1 5 21.7 6 19.4 7 17.8 8 16.6 9 15.6 10 14.8 11 14.2 12 13.6 13 13.2 14 12.8 15 12.5 16 12.2 17 11.9 18 11.7 19 11.5 20 11.3 21 11.1 22 11.0 23 10.8 24 10.7 25 10.6 26 10.5 27 10.4 28 10.3 29 10.2 30 10.1 ------------------------------------------------------------------------------ Representative 10-min turbulence intensity [%] at WEC_1 u 0 ----------- 1 54.8 2 32.6 3 24.7 4 20.6 5 18.1 6 16.4 7 15.2 8 14.3 9 13.6 10 13.0 11 12.6 12 12.2 13 11.8 14 11.5 15 11.3 16 11.1 17 10.9 18 10.7 19 10.5 20 10.4 21 10.3 22 10.2 23 10.1 24 10.0 25 9.9 26 9.8 27 9.7 28 9.6 29 9.6 30 9.5