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High pressure gas atomization using compressibleInterFoam

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Old   February 18, 2018, 11:36
Default High pressure gas atomization using compressibleInterFoam
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Kalpana Hanthanan Arachchilage
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Dear all,
I'm trying to simulate high pressure gas atomization process using compressibleInterFoam. Pressure inlet boundary condition is used for gas inlet (Pressures 10-30atm) and fixed velocity boundary condition is used at the liquid inlet. Liquid is heated above 1000K and gas is entering at room temperature. I have tried many changes (in terms of boundary conditions, Pmin, momentum predictor and transonic conditions) but my simulation crashes after few time steps. One thing I have noticed is it creates liquid from the side outlet, which is not physical. And finally it crashes with negative temperature values.
I have attached an animation of my simulation and also my test case file herewith. I really appreciate if someone can help me with this.

Thank you again,
Kalpana
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compressibleinterfoam, compressibleinterfoam bcs, divergence of temperature, high pressure injection, mass balance error


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