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Forum: OpenFOAM Programming & Development

December 16, 2014, 11:21

Replies: 7

Thermal stress prediction with elasticThermalSolidFoam - No contribution to UEqn?

Views: 2,088

Posted By bigphil

Yes, this is allowed as outer iterations are...

Yes, this is allowed as outer iterations are performed within each time-step, and this can be very helpful in some situations.
Typically only a very small amount is needed, between 0.99 and 0.999...

Forum: OpenFOAM Programming & Development

December 11, 2014, 05:53

Replies: 7

Thermal stress prediction with elasticThermalSolidFoam - No contribution to UEqn?

Views: 2,088

Posted By bigphil

Yes I've noticed this too. A very small amount...

Yes I've noticed this too.
A very small amount of equation under-relaxation will fix this.

Put this line after the TEqn is created (and before it is solved):

TEqn.relax(TEqnRelaxFac);

And...

Forum: OpenFOAM Programming & Development

November 16, 2014, 06:14

Replies: 7

Thermal stress prediction with elasticThermalSolidFoam - No contribution to UEqn?

Views: 2,088

Posted By bigphil

I will have a look at the addition of an...

I will have a look at the addition of an orthotropic thermal term.

This is just based on what I found works in general; but yep for a given case you just have to check that the tolerance is...

Forum: OpenFOAM Programming & Development

November 15, 2014, 06:06

Replies: 7

Thermal stress prediction with elasticThermalSolidFoam - No contribution to UEqn?

Views: 2,088

Posted By bigphil

Hi, I found a bug that was introduced in...

Hi,

I found a bug that was introduced in $FOAM_SRC/solidModels/constitutiveModel/tractionBoundaryGradient/tractionBoundaryGradient.C in foam-extend-3.1:

Change this line:

to this line:

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