Bug Report: Combination of Mod_AmbWind=3 with WindType=5 in FAST.Farm #471
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deslaughter
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Jul 14, 2023
There was a bug where the modulo operation to wrap back to the beginning of the wind file didn't work correctly, previously noted in issue OpenFAST#471. This seemed to come back due to some changes in the IfW refactor. The ifw_HAWC regression test was added to catch this and other IfW changes in the future.
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Mod_AmbWind= 3 option was recently added to FAST.Farm to support the modeling of ambient wind across the wind farm via an interface to the InflowWind module, with multiple instances of InflowWind for the low-resolution domain and high-resolution domain for each wind turbine in the farm. While this capability should work as intended for InflowWind wind data type (WindType) = 1 (steady), 2 (uniform), 3 (full-field turbulence in TurbSim format), and 4 (full-field turbulence in Bladed format), the implementation does not properly supportWindType= 5 (full-field turbulence in HAWC format, for the Mann model). The user needs to be able to specify unique values ofnx,ny,nz,dx,dy,dz, andRefHtfor each Mann file / domain, but the code only allows the user to specify one value each for all files. This is a bug that needs to be fixed. Until this bug can be fixed,Mod_AmbWind=3 should not be combined withWindType=5.FYI: FAST.Farm is being developed in a fork of OpenFAST and will be merged into OpenFAST-dev soon.
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