What thermal boundary conditions should be used to simulate continuous material?

Sampsa Vili Antero Laakso @Sampsa-Laakso

30 June 2020 0 9K Report

Let's say I have WxWxW block of material that has one free surface and other surfaces are assumed to continue to semi-inifinite, or the actual block is significantly larger than the simulated block. The free surface has boundary condition for heat transfer coefficient set to free convection to air. The initial block will have point like temperature distribution and I need to simulate the temperature after certain period of time.

What boundary conditions should be used to simulate this as semi-inifite block?

I would assume that heat transfer coefficient is set, but to what value? Can it be calculated somehow from the materials heat capacity and thermal conductivity?

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