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Old   December 1, 2005, 07:56
Default regarding multiphase flows
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Rashmi
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hi all

iam simulating 2phase flow(water-oil).i have some queries: 1. is it necessary to use axissymmetric or can work with 3D? 2. while calculating the turbulent intensity we have to consider the density, viscosity and velocity of the mixture or only the water.( while specifying boundary conditions for inlet using water in drop down list ). 3.for fluid in boundary conditions panel should we use the stationary or moving reference frame.? 4.while plotting the contours how can we fix the scale of the countors for example for volume fraction of oil i want the scale from 0 to 1.

any suggestions are most welcome and appreciated Regards Rashmi
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Old   December 1, 2005, 09:28
Default Re: regarding multiphase flows
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HS
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4.) turn off auto scale and write 0 as min and 1 as max in the countours plot panel
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Old   December 2, 2005, 08:13
Default Re: regarding multiphase flows
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Vijay
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Hi, Which multiphase fow model are you using? Eulerian/VOF etc. VJ.
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Old   December 3, 2005, 05:39
Default Re: regarding multiphase flows
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Rashmi
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hi iam using eulerian,dispersed, k-e 2 eqn, stantard wall treatment.
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Old   December 3, 2005, 15:59
Default Re: regarding multiphase flows
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Krishna Podila
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Dispersed k-e model is good. Its perfect. Are u working on bubbly pipe flows? Whose dat set are u validating? KP
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Old   December 4, 2005, 23:07
Default Re: regarding multiphase flows
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Rashmi
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yes iam using the dispersed k-e model..but iam not getting results. iam monitoring the oil/water fraction in one plane but the volume fraction is constant through out that plane in all the iterations. dont know y the pressure is varying from -ve to +ve...

iam validating my supervoisers experimental data.she has done with cfx and experiment but her results are not in very good agreement with her experimental one.
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