Volume fraction of air in air-water bubble column -- CFD Online Discussion Forums

January 1, 2018, 09:27

Volume fraction of air in air-water bubble column

ritesh.prakash

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Ritesh

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How to ensure the accurate time average volume fraction in an air-water bubble column. I have monitored the volume weighted average of gas fraction and after the transient run of 60 seconds still the volume fraction is increasing. I have attached the graph of area weighted average Vs flow time which showing that volume fraction of the air is increasing continuously. Please guide me, up to how much time I should run the simulation and how to ensure the converged volume weighted average of the gas fraction? I have attached the graph of area weighted average Vs flow time which showing that volume fraction of the air is increasing continuously.

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