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Two solids 2D CHT Analisys

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Old   January 10, 2008, 04:18
Default Two solids 2D CHT Analisys
  #1
antonello
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I'm trying to do a 2D analisys(one element thick mesh) to investigate the cooling efficience of a copper bar covered by an insulation layer. A source subdomain is assigned to copper region taking into account the effect of current flow.

I obtained a good temperature distribution for the colling fluid, but the copper bar calculated temperature is 0K. I think I set right parameters for solid-solid (copper - insulant) interface.

I dont understand what happens... Can someone help me? Thank you.
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Old   January 10, 2008, 18:42
Default Re: Two solids 2D CHT Analisys
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Glenn Horrocks
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Hi,

Obviously something is wrong with your physics setup. Check all parameters affecting heat transfer. It could be anything from material properties to interface conditions to boundary condition setup.

Glenn Horrocks
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Old   January 14, 2008, 05:15
Default Re: Two solids 2D CHT Analisys
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antonello
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... i think you are right. But I dont understand where error could be.

I used a source subdomain in copper region, solid-solid interface between copper and insulating layer, solid-fluid between insulant and air. I choose the automatic mesh connection method. The one elemet thick mesh is obtained extruding a 2D mesh in ICEM CFD. Materials come from CFX library (Air ideal gas).

I also tried to analyze a much simpler model having similar features, and results were wrong again.

Have you got some idea? If you want I can send you my files. Thank you.
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Old   January 14, 2008, 17:39
Default Re: Two solids 2D CHT Analisys
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Glenn Horrocks
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Hi,

I don't have time to debug people's simulations. If you need detailed help talk to CFX support.

Build your model up one component at a time and check each part is working correctly as you assemble it. This takes quite a bit of time but is the only way to be sure.

Glenn Horrocks
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