I'm a student with no much experience with FEA and COMSOL. I'm trying to model the heat transfer from a heated cylinder. The cylinder has diameter of about 0.18 m and height of 0.36 m. The cylinder is hollow with holes from one side to the other side.(adsbygoogle = window.adsbygoogle || []).push({});

I'm interesting in finding the temperature of the cylinder on steady state.

my questions are:

1. How much elements the mesh should have? I just want to know the average temperature of the cylinder, I'm not interesting in some boundary effects or some thing like this. The mesh I have now has 170,000 elements. Is it enough for this kind of problem? When I try to model something, how do I know what is a reasonable size for the mesh?

2.Does the size of the mesh effects the accuracy of the whole solution? If a problem solved once with fine mesh and once with coarse mesh, would the average temperature of the whole object will be different?

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# COMSOL and FEA questions

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