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heat transfer in an oven2

heat transfer in an oven

(OP)
Hello,
I put a piece in an oven.
can I impose boundary conditions of the room and see the evolution of temperature on the surface of the piece ?
can I do that in COMSOL ?

RE: heat transfer in an oven

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.

RE: heat transfer in an oven

(OP)
FEA way do you know how to put that temperature profile (ramp up holding ramp down) in comsol

RE: heat transfer in an oven

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.

RE: heat transfer in an oven

There's no need to define a variable. Just create a ramp function amd then enter rm1(t[1/s]) as temperature in boundary condition settings.

RE: heat transfer in an oven

(OP)
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.

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