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Old   October 23, 2006, 09:10
Default Need help with mixing two liquids
  #1
Albert
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I'm modelling mixer for two liquids: water and oil. Solver is steady, segregated, euler multiphase. Primary phase - oil, secondary - water, size - 1 mm. Mesh is tetarhedral with 1 mm step. Two liquids enter from pressure inlets (different pressures, phase fractions for sec phase are 0 and 1 respectively) and leave from pressure outlet. Solution converges very well, but when i postprocess results I dont see water fraction in outlet steram. Flux report shows reasonable amount of water and oil. Tried both steady/unstedy, mixture/euler no results.

Any ideas for solving this problem?

PS Fluent 6.1.18

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Old   October 23, 2006, 15:33
Default Re: Need help with mixing two liquids
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Lalal
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do not use tetraedral meshes for this!!!!
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Old   October 24, 2006, 01:47
Default Re: Need help with mixing two liquids
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Michael B
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There must be a better suggestion than that...
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Old   October 27, 2006, 01:18
Default Re: Need help with mixing two liquids
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Ryan
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Can you give me one good reason for usig multiphase model.

Ryan
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Old   October 27, 2006, 11:17
Default Re: Need help with mixing two liquids
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Albert
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Why not? what is the problem with tetrahedral, it is the easiest way to mesh. It is not that I wont try hexahedral, just want to know the reason. And thanks for the answer, will report on results withdifferent mesh.
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Old   October 27, 2006, 11:22
Default Re: Need help with mixing two liquids
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Albert
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Khm, didnt get the idea. Is there any alternative? If there is what is it, and thanks for help!
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Old   October 28, 2006, 03:52
Default Re: Need help with mixing two liquids
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Ryan
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please go through the chemical species tutorial for defining additional scalars.

It tells u how to mix methane with air. Your problem is something similar to this.

Should be a good start.

Good luck

Ryan
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Old   October 28, 2006, 07:34
Default Re: Need help with mixing two liquids
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Albert
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Thanks, I will look at that!
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