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unicfdlab / libAcoustics

libAcoustics - OpenFOAM library for far-field noise computation
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Curle and FWH #89

Closed chen0mou0mou closed 1 year ago

chen0mou0mou commented 1 year ago

Hi,

I have a small question. I simulate the flow past a cylinder and predict the noise using libacoustics. If I use FWH and choose the cylinder surface as the control (integral) surface, this FWH set has the same core as the curle method. The results from this FWH set and curle set are the same. I want to confirm this.

Thank you, Guanjiang

mkraposhin commented 1 year ago

Hi!

Yes and no simultaneously. Theoretically FWH reduces to Curle when a control surface encompases a body. However, in our formulation we don't account for retarded time while integrating over a control surface in the Curle analogy implementation. While in FWH we do account for retarded time. Therefore, you should experience some difference between results.

mkraposhin commented 1 year ago

I think this question has already been addressed previously in other issues. Try searching in the "Closed" section.

chen0mou0mou commented 1 year ago

Thanks