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Albert October 23, 2006 09:10

Need help with mixing two liquids
 
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


Lalal October 23, 2006 15:33

Re: Need help with mixing two liquids
 
do not use tetraedral meshes for this!!!!

Michael B October 24, 2006 01:47

Re: Need help with mixing two liquids
 
There must be a better suggestion than that...

Ryan October 27, 2006 01:18

Re: Need help with mixing two liquids
 
Can you give me one good reason for usig multiphase model.

Ryan

Albert October 27, 2006 11:17

Re: Need help with mixing two liquids
 
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.

Albert October 27, 2006 11:22

Re: Need help with mixing two liquids
 
Khm, didnt get the idea. Is there any alternative? If there is what is it, and thanks for help!

Ryan October 28, 2006 03:52

Re: Need help with mixing two liquids
 
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

Albert October 28, 2006 07:34

Re: Need help with mixing two liquids
 
Thanks, I will look at that!


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