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"3" phase flow, modeling a toilet

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Old   September 11, 2012, 09:10
Default "3" phase flow, modeling a toilet
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SandeSeb
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Hello users,

Im relative new in the CFD topic, nevertheless I got the job to investigate the flushing of toilets.
My questions are:

Is it generally possible to simulate the flushing of toilets including solid parts (feces)? This would be a "3 phase" problem (water, solid and air at the surface), in my opinion.

Which program would you suggest for solving this problem?
I have solutions from CD Adapco, Ansys, CF Design and Mentor Graphics in my eyes.

Also the program should have an interface or the possibility to use CATIA V5 models.

I think, this is a tough job, isnt it?

Thank you in advance for your help.

Best regards
Sebastian
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Old   September 13, 2012, 01:57
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SandeSeb
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Hi again,

has no one an idea? Or just some hints for me on which points I have to look by choosing the software.

Thanks
Sebastian
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Old   September 13, 2012, 03:00
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Joern Beilke
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I would try it with a particle based solver. You might check xflow.

http://www.youtube.com/watch?v=Se4v-QRWtYA
http://www.youtube.com/watch?v=aCz8zt-V-TM
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Old   September 17, 2012, 02:17
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SandeSeb
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Hey there,

thank you for this hind.
I will contact them.

Best regards
Sebastian
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Old   October 30, 2012, 03:37
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王国斌
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flow3d may give you answer
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Old   October 30, 2012, 14:50
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Thiago Parente
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You could adopt the diarrhea hypothesis, then you would eliminate the solid issue.

Sorry, just kidding.
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Old   October 31, 2012, 16:56
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Erik
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Wouldn't you rather conduct real world experiments instead of simulations?
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Old   October 31, 2012, 22:08
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Ahmed
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Previous investigations suggest that it is a 2 phase flow,
Google using the following search criteria "slug flow Toilet flushing cfd"
good luck
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