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Heat pipe Simulation

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Old   July 30, 2023, 10:23
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Jaymeen Patel
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Hi, I am working on Heat pipe numerical simulation and, wish to simulate heat pipe for multi phase flow physics including boiling and condensation. I found one solver interCondensatingEvaporatingFoam, but it is not nucleating boiling or condensation, it only gives phase change.

On the other hand I have modified interFoam of OF-9 version as per Paper 'The evaluation of the diffuse interface method for phase change simulations using OpenFOAM' The solver is working fine for Stefan's problem and 2-D film boiling but it not works for horizontal film and other condensation problem. During condensation the min. alpha value goes below zero and then time steps starts running in 10^-15 range. Can anyone help me in this problem.

Thanks in advance
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Old   August 25, 2023, 10:09
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Khaled Yassin
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I am not an expert in the field you are asking about, but have you tried to add a constraint in the system/fvConstraints file to set min. alpha = 0?
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Old   August 26, 2023, 05:39
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Jaymeen Patel
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Thanks, I will look for that
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