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Forced convection and CHT : can we disable pressure and velocity solvers ?

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Old   April 4, 2012, 09:09
Default Forced convection and CHT : can we disable pressure and velocity solvers ?
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Hi everybody,

I would like to simulate a Conjugate Heat Transfer problem where the fluid properties (density and viscosity) are independent of temperature. It is a forced convection case. Suppose I already get the pressure and velocity fields through a steady state simulation in the fluid region.

The question is: can I run a CHT simulation (with time varying T boundary conditions) where p and U are initialized by the steady state solution and only energy equations are solved (in the fluid and solid regions with heat transfer). I can do so by setting the target residue of the pressure and velocity equations to 1.

Is this correct ? This proceedure could save a lot of CPU time

Thank u for your help.
M3hdi
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Old   April 5, 2012, 09:27
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..the underlying hypothesis would be that the temperature field does not change the pressure and velocity solutions. Is this correct in a physical point of view ? (for incompressible fluid with constant density and viscosity)

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Old   May 31, 2012, 04:42
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... none ?
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Old   May 31, 2012, 08:04
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That's a usual way to deal with that problem. So try it and look if you get reasonable results.
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Old   May 31, 2012, 08:57
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Thank you for the answer !

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