Transient CHT - iterations - solid, fluid

Jiricbeng · February 1, 2017, 08:25

When doing transient conjugate heat transfer analysis, is it possible to set more iterations for solid domain than for fluid domain?
Because the flow in the fluid domain is stable after a few iterations in each time step but the heat flux in the solid not. I think increasing the iteration number only for solid would speed up the solution, but I dont know how to increase the iteration number only for solid and not for solid and fluid together.
Any ideas are welcomed.

KevinZ09 · February 1, 2017, 10:38

I'm not sure that's possible, but two things you could do to speed up the problem:

- Turn your flow and turbulence equations off, solving only the energy one.
- Reduce the cp of your solid, so that it heats up quicker.

February 1, 2017, 08:25	Transient CHT - iterations - solid, fluid	#1
Jiricbeng Senior Member Jiri Join Date: Mar 2014 Posts: 218 Rep Power: 13	When doing transient conjugate heat transfer analysis, is it possible to set more iterations for solid domain than for fluid domain? Because the flow in the fluid domain is stable after a few iterations in each time step but the heat flux in the solid not. I think increasing the iteration number only for solid would speed up the solution, but I dont know how to increase the iteration number only for solid and not for solid and fluid together. Any ideas are welcomed.

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February 1, 2017, 10:38		#2
KevinZ09 Senior Member Kevin Join Date: Dec 2016 Posts: 138 Rep Power: 9	I'm not sure that's possible, but two things you could do to speed up the problem: - Turn your flow and turbulence equations off, solving only the energy one. - Reduce the cp of your solid, so that it heats up quicker.