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steady state heat transfer analysis

I have a model which consists of 5 copper tubes. I calculated its heat flux and convection values based on the inside diameter of the tube (3667.625 W/m^2 & 39.650 W/m^2-K). Would like to know the heat transfer from the inside to outside diameter of tube, 12.5 mm outside and 12 mm inside. How to do this? I'm new to altair simlab. Here is my model.

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SimLab

v2023.1

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Santhoshkumar

Hello Ninen,

Attached a sample database to replicate the problem definition which you have mentioned. Please have a look and let us know if you need any more clarification.

Thanks,

Santhoshkumar

HeatTransfer.slb

Ovando_RBB

Hi there,

If you already have the power density and the heat transfer coefficient at the inner diameter (ID) of the pipe, you can estimate the temperature at the ID surface using Newton’s Law of Cooling, provided you also know the average temperature of the fluid flowing inside the pipe.

Once the ID temperature is known, you can apply it as a Dirichlet boundary condition on the ID faces.

For the external faces, assuming they are exposed to a typical natural convection environment, you can apply a convective boundary condition. A reasonable starting point is to use a film coefficient of 15 W/(m²·K) at an ambient temperature of 22°C, unless your case requires a different ambient reference.

Hope this comment helps!