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Issue with Empty Bottom Region in Hot Fluid Injection Model
Posted Sep 19, 2025, 10:27 a.m. EDT Fluid & Heat, Computational Fluid Dynamics (CFD), Results & Visualization 1 Reply
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Hello all,
I modeled a column of hot fluid being injected into an argon domain, similar to the setup shown in the attached figure. Since the bottom boundary of the fluid column is not an external boundary, I defined the inlet at the top boundary of the column.
In my setup, I am using Level-Set to track the interface of the deposited material, along with Heat Transfer and Laminar Flow physics.
My question is: Why does the bottom part of the column remain empty during the injection process? I do not observe a continuous flow of material while the deposition is occurring.
Any suggestions or insights would be greatly appreciated!
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Hi
It seems to be an issue with the boundary conditions. What is the pressure of the Ar gas inside? It should be less than the injection pressure of the hot fluid.
Best, Mahvash
