wet steam model convergence problems

adeln · February 7, 2013, 15:11

Hello,

I am trying to get convergence when using the wet steam model in Fluent. It is a very simple case with steam blowing over a wall set to a low temperature. It is mainly the "wsb" equation that is problematic (going to values of order 1e6). I want to do a low speed case with laminar flow.

Anyone have any ideas what might be wrong? I have tried lowing the CFL number and lowering the under-relaxation factor for the wet steam equation. No success.

Ali734 · July 8, 2013, 17:49

Hello

Have you used the converged solution for the real gas model (wet steam without condensation) as your initial condition?

February 7, 2013, 15:11	wet steam model convergence problems	#1
adeln New Member Join Date: Feb 2013 Posts: 1 Rep Power: 0	Hello, I am trying to get convergence when using the wet steam model in Fluent. It is a very simple case with steam blowing over a wall set to a low temperature. It is mainly the "wsb" equation that is problematic (going to values of order 1e6). I want to do a low speed case with laminar flow. Anyone have any ideas what might be wrong? I have tried lowing the CFL number and lowering the under-relaxation factor for the wet steam equation. No success.

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July 8, 2013, 17:49		#2
Ali734 New Member Ali Join Date: Jun 2012 Location: Finland Posts: 3 Rep Power: 13	Hello Have you used the converged solution for the real gas model (wet steam without condensation) as your initial condition?