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Is it reasonable to use gradient limiter on pressure gradient? |
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November 25, 2019, 08:12 |
Is it reasonable to use gradient limiter on pressure gradient?
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#1 |
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Qiu Xiaoping
Join Date: Apr 2013
Location: IPE CAS China
Posts: 14
Rep Power: 14 |
Should I limit the pressure gradient when doing steady incompressible simulation with low-quality volume mesh?In other words, can I set the default gradient scheme as
gradSchemes { default cellLimited Gauss linear 1; } ? In this page, https://bugs.openfoam.org/view.php?id=1410#c3246, Henry suggested that the pressure gradient should NEVER be limited. But I am not sure the reason behind it. |
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January 6, 2022, 06:38 |
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#2 |
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Javier Vinuales
Join Date: May 2016
Posts: 42
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anyone has any comments about why not to limit pressure gradient?
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January 14, 2022, 12:40 |
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#3 |
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Tobias Holzmann
Join Date: Oct 2010
Location: Bad Wörishofen
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I don't see any reason for limiting the pressure gradient for steady state simulations. Especially if we use SIMPLE algorithm. The topic Henry is talking about was multiphase flows and transient ones (if I got it correctly). But I could not give you an answer to this one.
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Keep foaming, Tobias Holzmann |
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gradient limiter, pressure gradient |
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