Scaling of heat transfer coefficient with Thickness in 2D heat transfer/fluid flow model
Posted Apr 23, 2019, 7:33 PM EDT Heat Transfer & Phase Change, Computational Fluid Dynamics (CFD), Heat Transfer & Phase Change Version 5.3a 0 Replies
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I'm modeling heat transfer of a simple cylinder in convective flow in 2d, with a defined volumetric heat source (General Source in W/m^3).
If I add a constant heat flux to the outside of the cylinder, and change the heat transfer thickness dz, the temperature of the cylinder is unchanged, as I would expect (since the heat source is volumetric).
However, if I add CFD turbulent flow and do a multiphysics solution, the temperature changes dramatically when dz is changed (ie, the effective heat transfer coefficient has changed).
Anyone have a clue what may be going on here?
Hello Jeff Klein
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