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October 22, 2021, 06:33 |
Curle Analogy Function object
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#1 |
New Member
Alberto Artoni
Join Date: Oct 2019
Posts: 7
Rep Power: 7 |
I was trying to understand why the Curle analogy is implement as it has been implemented:
The actual formulation by Curle can be seen as: I can see that if we are far enough, we can replace the divergence with . I don't understand: 1) why was the volume term omitted 2) from where the term comes from. Thanks! |
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June 15, 2022, 05:21 |
OpenFOAM Curle Analogy
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#2 |
New Member
Costas Mikedis
Join Date: Jun 2022
Posts: 1
Rep Power: 0 |
The derivation of the OpenFOAM formulation can be found in the book "Aeroacoustics of Low Mach Number Flows" by Glegg et. al. pg 83.
OpenFOAM accounts only for the dipoles in this formulation. Furthermore, when calculating the force, OpenFOAM uses only the pressure at given input surfaces since, by default, the convection term is zero at walls for viscous flows. (see attached). |
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Tags |
aeroacoustics, curle |
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