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June 20, 2015, 11:35 |
Boundary condition including time derivative
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#1 |
New Member
Ender Demirel
Join Date: Jun 2009
Location: Turkey
Posts: 20
Rep Power: 16 |
Hello OF users,
I want to implement a Neumann type boundary condition for the pressure as follows dp/dx=-p-dp/dt. Does anyody know how to use this bc in OpenFoam or swak4Foam? Best regards, Ender |
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June 20, 2015, 11:37 |
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#2 |
Senior Member
Alex
Join Date: Oct 2013
Posts: 337
Rep Power: 21 |
This is a fixed gradient BC
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Web site where I present my Master's Thesis: foamingtime.wordpress.com The case I talk about in this site was solved with chtMultiRegionSimpleFoam solver and involves radiation. Some basic tutorials are also resolved step by step in the web. If you are interested in these matters, you are invited to come in! |
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June 20, 2015, 11:44 |
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#3 |
New Member
Ender Demirel
Join Date: Jun 2009
Location: Turkey
Posts: 20
Rep Power: 16 |
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June 20, 2015, 15:02 |
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#4 |
Senior Member
Alex
Join Date: Oct 2013
Posts: 337
Rep Power: 21 |
Forget about what I said in the last post, fixedGradient can't be used to suit your needs, I missunderstood the term Neumann you used... However, it can be achieved by using swak4foam and using the value for pressure from the last time step and the current one.
Best regards, Alex
__________________
Web site where I present my Master's Thesis: foamingtime.wordpress.com The case I talk about in this site was solved with chtMultiRegionSimpleFoam solver and involves radiation. Some basic tutorials are also resolved step by step in the web. If you are interested in these matters, you are invited to come in! |
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