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Inconsistency between CFD and physics about Taylor bubbles |
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August 18, 2023, 17:50
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Inconsistency between CFD and physics about Taylor bubbles
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Hello everyone.
I'm trying to simulate the rise of a Taylor bubble in a vertical pipe filled with stagnant water with Starccm+. On that purpose, I initially defined an air column under a water column (see attachment). The bubble forms at the beginning of the simulation and rises to the top of the tube. The experiments show that it is supposed to get a little longer during the rise but the one on my simulation keeps shrinking. I don't have any idea why it behaves this way. Here are the main physic models I used: 3D - VOF - Eulerian multiphase - K-epsilon turbulence - gravity. Does anyone have any ideas? Thanks in advance |
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