|May 2, 2012, 04:24||
number of nodes in solid domain
Join Date: Aug 2011
Posts: 53Rep Power: 5
I want to know what decides the number and distribution of nodes in a solid domain in a CHT problem.(Like we have y+ for a fluid domain).
|May 2, 2012, 18:17||
Join Date: Mar 2009
Location: Sydney, Australia
Posts: 10,671Rep Power: 84
It is determined by your mesh, obviously.
But I think you are asking what should you consider as you mesh a solid body for CHT simulation.
In a solid the only thing you are resolving is the temperature gradient. In steady state simulations this is usually much more gentle than any flow gradient, meaning a much coarse mesh is acceptable. In transient simulations you need to resolve the temperature gradient in time and space - if you are trying to resolve a very fast temperature transient then you will need a fine mesh to resolve it.
In the unusual case of a transient simulation with a fast temperature gradient inflation layers may be appropriate. Otherwise, a coarser mesh is usually fine as it simply has to resolve the temperature gradients.
But as ever, check it with a mesh sensitivity study to check that it is OK.
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