CFD_Conjugate_Heat_Transfer Meshing

Rahul_P1

Hi All,

Objective of my simulation is to perform a conjugate heat transfer analysis. I have two solid volumes/ regions and one fluid volumes/region. I would like to mesh all the three and make sure there is a conformal interface between the solid and the fluid volumes. One way to do is at the CAD level, if not I would like to know how to imprint surfaces of two regions on one another and then how to extract just the fluid volume in order to mesh the flow field.

To make it simple, if I have two solids and a fluid flow in between, what is the best way to have a conformal mesh generated for CFD analysis? I have attached screenshot of the domain. Thank you for your help.

Regards
Madhu

Rahul_P1

Hi Madhu,

You can use the CFD tetramesh panel to create boundary layers and tetramesh representing the fluid. andtetramesh or other solid meshing panels for the solid mesh of the components.

Could you describe the inlet, outlet in your model and the passage of the fluid?
Could you also perhaps describe the model, i.e. what is this device?and which solver you intend ot use, is it acusolve?

You can surface mesh your components first, ensure there are no free edges (closed volume)

Ensure your entire model is a closed volume, (close the green tube at its ends for instance)

Then use cfd tetramesh, here you can select the outer tube(green) and the inner fins(blue) as fixed for meshing, this will then fill the gap between these two components with tetras representing the fluid.

There will be complete connectivity and conformal mesh generated, i.e. the tetramesh representing the fluid will connect to the faces of the inner fins and the outer green tube.

You can also isolate these components and create face elements from tool > faces to represent interfaces between the solid and the fluids.

I strongly recommend the CFD tutorials and also the CFD tetramesh panel documentation in the help to begin.

http://www.altairhyperworks.com/hwhelp/Altair/hw11.0/help/hwtut/hwtut.aspx

http://www.altairhyperworks.com/hwhelp/Altair/hw11.0/help/engsol/engsol.htm?help399.htm

 

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