[bbasal]

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

[msaeedsadeghi]

It is normal. one wall is for the inner cylinder and the other wall is for the outer cylinder that are coupled together.

[bbasal]

Originally Posted by msaeedsadeghi

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"

[bbasal]

Originally Posted by msaeedsadeghi

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?