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natural convection and open boundary
Posted Feb 28, 2014, 8:24 a.m. EST Heat Transfer & Phase Change, Computational Fluid Dynamics (CFD) Version 4.3a 0 Replies
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I’m trying to model a simple room where one hot wall drives a natural convection.
Since I only want to know what happends next to the hot wall I want to use the open boundary condition as to assume the room is an endlessly large volume in the direction opposite to the wall.
Im using the conjugate heat transer module for turbulent flow since I will need turbulent flow for my larger model later on.
I don’t seem to be able to get the model to converge. I have tried both no viscous stress and normal stress on the open boundary.
Why is this and how am I going to put the boundary condition here for the model to converge?
When I disable open boundary and just put a lower temperature on the opposite wall the model converges perfectly.
(model attached)
Thankfull for any help
Emil
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Hello Emil Gustafsson
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