Low Mesh Frequency Cutoff

fardinkhalili · March 14, 2014, 15:33

Hi all, in my wind turbine simulation I got very low mesh frequency cutoff of maximum 700Hz when the velocity was 8m/s. then I increase the number of mesh cells around the wind turbine blade and refined the meshes. Then in the same conditions I got 1500Hz for the maximum mesh frequency cutoff. Do you think this low number is only because of low velocity and reynolds number or there is an error in my simulation?

me3840 · March 19, 2014, 14:20

The mesh frequency cutoff is also related to your mesh size. The mesh must be sized correctly to allow proper resolution of the pressure wave.

March 14, 2014, 15:33	Low Mesh Frequency Cutoff	#1
fardinkhalili New Member Fardin Khalili Join Date: Feb 2014 Posts: 10 Rep Power: 12	Hi all, in my wind turbine simulation I got very low mesh frequency cutoff of maximum 700Hz when the velocity was 8m/s. then I increase the number of mesh cells around the wind turbine blade and refined the meshes. Then in the same conditions I got 1500Hz for the maximum mesh frequency cutoff. Do you think this low number is only because of low velocity and reynolds number or there is an error in my simulation?

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March 19, 2014, 14:20		#2
me3840 Senior Member Join Date: Nov 2010 Location: USA Posts: 1,232 Rep Power: 24	The mesh frequency cutoff is also related to your mesh size. The mesh must be sized correctly to allow proper resolution of the pressure wave.