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Help! 2 Dimensional Vertical Annuli Flow

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Old   April 3, 2013, 11:21
Default Help! 2 Dimensional Vertical Annuli Flow
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hi,

I want to solve 2 Dimensional Annuli Flow. Dimensions are radial and axial. Water flows thorough the inner tube and there is air in the annulus. I want to solve heat transfer between water and air.

I draw the geometry 2D. A shadow wall
occurred between inner tube and annuli. and i can't solve the problem

2D Vertical Annuli Flow can be solved with Fluent

geometries are atteched

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File Type: jpg 3D Annuli.jpg (64.4 KB, 6 views)
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Old   April 4, 2013, 05:36
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It is normal. one wall is for the inner cylinder and the other wall is for the outer cylinder that are coupled together.
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Old   April 4, 2013, 07:54
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Quote:
Originally Posted by msaeedsadeghi View Post
It is normal. one wall is for the inner cylinder and the other wall is for the outer cylinder that are coupled together.
but when i try to initialize boundary contions i have some problems. when i try to specify "gauge pressure", "axial velocity", "radial velocity" and "temperature" there is already a value "-1.#IND". i change them with actual values but program dosen't work.

it says "Error: Divergence detected in AMG solver: x-momentum
Error Object: #f"
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Old   April 4, 2013, 07:55
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Quote:
Originally Posted by msaeedsadeghi View Post
It is normal. one wall is for the inner cylinder and the other wall is for the outer cylinder that are coupled together.

can i sent you the program file?
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