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heat transfer in an oven 2
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TTFN (ta ta for now)
I can do absolutely anything. I'm an expert! faq731-376 forum1529 Entire Forum list
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Yes, in COMSOL you can perform regular heat transfer simulation (Heat Transfer in Solids) and apply convection/radiation as boundary conditions. But you can also do Conjugate Heat Transfer simulation (multiphysics: Heat Transfer in Solids + Laminar/Turbulent Flow) to include air flow effects.
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When specifying temperature as boundary condition directly or defining external temperature for convection/radiation, you can enter a function instead of fixed value. It can be a name of a function created before in Definitions --> Functions (several types available) or expression written using Matlab syntax. Just be careful with units and with names of variables used by COMSOL. For example if you create a step function named step1, you should enter step1(t[1/s]) in the expression field where temperature is specified. COMSOL will warn you about unexpected units, unknown variables and incorrect syntax, if they occur in your expression.
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Thank you so much . I began with a ramp function to get used to it better but I didn't know about the units it doesn't work , for example if I want to bake the piece with this ramp function until 120degC what should I put there in the expression
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- #8
thanks. FEA way I need your help brother !
I need tut this model in comsol , but I didn't know what physics exactly should I use to resovle the problem I told you before. what is the different if I use "turbulent flow" or "heat transfer in fluid" and what are the boundary conditions that I should put to enter that temperature profile.
I need tut this model in comsol , but I didn't know what physics exactly should I use to resovle the problem I told you before. what is the different if I use "turbulent flow" or "heat transfer in fluid" and what are the boundary conditions that I should put to enter that temperature profile.
Seems to me you'd be better served posting your question in the COMSOL user's forum or talk directly to a COMSOL applications engineer
TTFN (ta ta for now)
I can do absolutely anything. I'm an expert! faq731-376 forum1529 Entire Forum list
TTFN (ta ta for now)
I can do absolutely anything. I'm an expert! faq731-376 forum1529 Entire Forum list
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