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jet of air impinging a heated cylinder

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Old   April 12, 2019, 08:27
Exclamation jet of air impinging a heated cylinder
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Hello ,
I have a problem while using star ccl+
i need to use star ccm+ in order to simulate this problem : A jet of air is impinging a cylinder , inside this cylinder we have a heating batterie ( 600 W ) , also cylindrique , i need to use star ccm+ in order to see the Nusselt Number .
The problem is that I never have the convergence of the residuals , so I am pretty sure I made some mistake in using the subtract in the geometry defining . I tried to create a smale cylinder as the heating battery , then the cylinder we have , then the fluid region , but I am not sure how to connect the three of them .
I hope i was clear enough and that someone can help me with that cause It's pretty Urgent
Thank you
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cylinder mesh, fluid domain, heating, residuals

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