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Set initial values for heat transfer module: solid domain surface
Posted Apr 25, 2018, 8:48 a.m. EDT Heat Transfer & Phase Change, Heat Transfer, Parameters, Variables, & Functions Version 5.0 0 Replies
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Hi everybody, I am modelling the thermal gradient within a cylinder containing water, which is heated by a solid spherical element in the middle of the cylinder. I am using the heat transfer in fluids interface, where I set the fluid domain as water, and the solid domain as the spherical element. I want to monitor the temperature decrease on the surface of the solid element, and the consequent heating of the water domain, starting from a T=35C for water and T=40C for the solid sphere (no thermal sources/heat fluxes, only initial T). In order to do so, I set the "initial values" for the solid (40C) and water (35C) domains. When plotting the results, I see that the volume temperature of the solid starts from 40C, but on its surface (the one I need to be at 40C) the temperature is much lower (36C). I suppose this is because of the thermal dissipation via conduction within the solid domain, which comsol automatically calculates. Is there a way to set the "initial value" T=40C on the solid outer boundary (surface), or this is possible only for domains? Or maybe to avoid the calculation of the thermal dissipation due to conduction? Any help is really appreciated.
Many Thanks,
Sara
Hello Sara Tosoni
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