Multiphase, Bubbly flows, Virtual Mass

July 17, 2005, 17:04

Hi CFD champs,

I am working on modelling of bubbly flows. During the course of simulations lot of numerical instabilities leading to numerical divergence is observed when virtual mass is included in case set up. It would be interesting and helpful for me if some one can share their experience in the context of virtual mass. Just to give more insight to the situation I use FLUENT and Eulerian-Eulerian method for solving governing equations. Thanks for help in advance. Eagerly waiting for replies!

KP

July 18, 2005, 10:41

Dear KP

Maybe you could run a case without the virtual mass force, and then use the result from that run as your initial condition for the case with the virtual mass force.

SC

July 18, 2005, 10:46

SC, Thanks for the message. I already tried that and enabled virtual mass after fully developed flow conditions but still...its the same.

KP

July 17, 2005, 17:04	Multiphase, Bubbly flows, Virtual Mass	#1
KP Guest Posts: n/a	Hi CFD champs, I am working on modelling of bubbly flows. During the course of simulations lot of numerical instabilities leading to numerical divergence is observed when virtual mass is included in case set up. It would be interesting and helpful for me if some one can share their experience in the context of virtual mass. Just to give more insight to the situation I use FLUENT and Eulerian-Eulerian method for solving governing equations. Thanks for help in advance. Eagerly waiting for replies! KP

July 18, 2005, 10:41	Re: Multiphase, Bubbly flows, Virtual Mass	#2
SC Guest Posts: n/a	Dear KP Maybe you could run a case without the virtual mass force, and then use the result from that run as your initial condition for the case with the virtual mass force. SC

July 18, 2005, 10:46	Re: Multiphase, Bubbly flows, Virtual Mass	#3
KP Guest Posts: n/a	SC, Thanks for the message. I already tried that and enabled virtual mass after fully developed flow conditions but still...its the same. KP

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