Clarification in FDM in Cylidrical coordinates
Hi I am trying to solve the convection equations (2 momentum and 1 energy equations) using FDM in a cylindrical annulus. The inner and outer walls are maintained at different temperatures and the top and bottom walls are maintained at adiabatic. I have written a Fortran Code and its working without any error. I have the following doubts:
1. Should the Nusselt number calculated at the inner and outer walls be same?
2. How to write the variable r (radial coordinate)? I have written it as
ri + (i-1)*dr, where ri is the radius of the inner cylinder and dr is the mesh size in r-direction.
Any clarification regarding the above issues are highly appreciated..Thanks in advance...
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