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Forum: OpenFOAM Running, Solving & CFD

August 16, 2010, 11:16

Replies: 26

wallHeatFlux BC not constant after restart

Views: 9,618

Posted By eelcovv

Hi Dinesh, I think the way you do it should...

Hi Dinesh,

I think the way you do it should give a variable heat flux, as it T-Tamb becomes smaller when the gases cools off (T is the temperature of the gas at the wall). I only don't undestand...

Forum: OpenFOAM Running, Solving & CFD

August 2, 2010, 09:37

Replies: 26

wallHeatFlux BC not constant after restart

Views: 9,618

Posted By eelcovv

wallHeatflux and groovybc

Hi Ning,

The wall heatflux as imposed by groovyBC is correct, however, it seems that other external utilities do not know how to deal with groovyBC. I have recompiled my wallHeatFlux for...

Forum: OpenFOAM Running, Solving & CFD

July 29, 2009, 04:19

Replies: 26

wallHeatFlux BC not constant after restart

Views: 9,618

Posted By eelcovv

Hi sandy, I am using a modified oodles...

Hi sandy,

I am using a modified oodles solver in which the temperature equation has been added just as has been done in the BoussinesqBuoyantSimpleFoam solver. Next, I use the oodles Pitch daily...

Forum: OpenFOAM Running, Solving & CFD

July 27, 2009, 09:23

Replies: 26

wallHeatFlux BC not constant after restart

Views: 9,618

Posted By eelcovv

Hi Sandy, No, what you say is not what I...

Hi Sandy,

No, what you say is not what I mean. This is not a divergence of the simulation, but a bug in the wallHeatFlux. With corrupting I mean that the values are non-valid numbers like 1e-341,...

Forum: OpenFOAM Running, Solving & CFD

July 23, 2009, 09:49

Replies: 26

wallHeatFlux BC not constant after restart

Views: 9,618

Posted By eelcovv

Solution to wrong heatFlux BC after restart

For those interested,

the problems with the non-constant heatflux after a restart can be prevented by also setting the gradient and value at the initial time step, for instance in the 0/T field:...

Forum: OpenFOAM Running, Solving & CFD

July 22, 2009, 06:02

Replies: 26

wallHeatFlux BC not constant after restart

Views: 9,618

Posted By eelcovv

wallHeatFlux BC not constant after restart

Dear all,

I have some problems with the wallHeatFlux bc as contributed by

http://openfoamwiki.net/index.php/Contrib_wallHeatFlux

When the bc is imposed as a constant value like
...

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