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using buoyantBoussineqPimpleFoam for Laminar free convection |
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June 13, 2014, 15:31 |
using buoyantBoussineqPimpleFoam for Laminar free convection
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#1 |
New Member
Join Date: Mar 2014
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Hi everybody
first of all i will describe the model I'm trying to solve and the i will ask my questions i will be grateful to if any one could help me! I wanted to model laminar free convection flow in a simple cavity it is a asymptotic steady-state solution. i mean thermodynamical properties will remain constant except density . as i found out in forums we should set RASproperties to laminar and turn turbulence to off. here is my question: what should we do to insert laminar properties in "0" folder ?? what should we do to Kappa , nut and how we can insert these properties for laminar flows?? thanks in advance! |
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June 13, 2014, 17:40 |
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#2 |
Senior Member
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just delete them!
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June 14, 2014, 05:32 |
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#3 |
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June 14, 2014, 06:43 |
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#4 | |
Senior Member
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Quote:
u have a known Ra number then u should specify Pr and beta and nu in a way that the flow has the specified Rayleigh number |
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June 15, 2014, 04:52 |
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#5 |
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Another question
what is the meaning of asymptotic steady state solution ???? what is that?? |
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June 16, 2014, 06:01 |
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#6 |
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anybody knows how we should set P and P_rgh in "0" ???
in a cavity we can set internal field to atmospheric pressure and zero gradients on walls ?? for P_rgh we should calculate P_rgh=P-rho*g*h , but how we can calculate it over a vertical wall? it varies?? |
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