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Eulerian-Eulerian in STAR-CD

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Old   June 10, 2008, 20:42
Default Eulerian-Eulerian in STAR-CD
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Ji
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Hi guys,

I want to try Star-CD but I hope I can have some inputs first. I just want to ask what are the options for the wall boundary conditions in Star CD's Eulerian-Eulerian model other than no-slip/slip. Is there an option there which allows the droplet to move out of the wall or stick to the wall? I know that these conditions are common in Eulerian-Lagrangian but we are trying to solve it using Eu-Eu. Our problem is inhomogeneous which makes the VOF model not suitable. Also, I read somewhere that Star CCM+ only supports VOF model for Eulerian multiphase. Does Star CD also uses VOF model only? Thanks for the help guys!
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Old   June 11, 2008, 05:32
Default Re: Eulerian-Eulerian in STAR-CD
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Anton Lyaskin
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Star-CD does have Eulerian two-phase model (starting from v3.24, however for the problems I've tried it was working good only from v4.x), but there are no special options for droplet-wall interaction.
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Old   June 11, 2008, 05:40
Default Re: Eulerian-Eulerian in STAR-CD
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Ji
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Thanks a lot!
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Old   June 11, 2008, 07:59
Default Re: Eulerian-Eulerian in STAR-CD
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Richard
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STAR-CCM+ only has VOF and Lagrangian for multiphase. STAR-CD has VOF, Lagrangian and Eulerian.
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Old   June 29, 2008, 23:09
Default Re: Eulerian-Eulerian in STAR-CD
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hwangkl
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in my experience, even in the case shown in tutourial(aeration tank), it is hard to converge. and in the tut example is a little cheating. it's volume fracture=0.5, doesnt consistent with the real case.it should be 1.0, however, since it's too difficult to converge, use an fake and easy number to users.
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