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-   -   Can Fluent measure the mass flow of water/sand mixture? (http://www.cfd-online.com/Forums/fluent/112073-can-fluent-measure-mass-flow-water-sand-mixture.html)

 Al-Hashimi January 21, 2013 13:26

Can Fluent measure the mass flow of water/sand mixture?

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Hi,
I have a hydrocyclone model supplied by water+sand mixture; a percentage of sand should be separated from water.
Can fluent give me information about this percentage? How much sand (kg/sec) will goes from the top outlet and how much will goes to the down outlet?
It is working with water as follows:
Inlet = 0.84767848 kg/s
Top_Outlet= -0.71924299 kg/s
Down_Outlet= -0.12842806 kg/s

But for Sand:
Inlet = 0.041 kg/s
Top_Outlet= ??? kg/s
Down_Outlet= ??? kg/s

Attachment 18368

Attachment 18367

 Al-Hashimi January 25, 2013 05:48

 NormalVector January 28, 2013 12:01

Can't you do a flux report to get the total mass flow and then use a surface integral report to get the mass fraction of your sand?

 Al-Hashimi January 29, 2013 13:15

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Many Thanks for your reply, but could you please give me more clarification, what to select from the surface integral tap?

Attachment 18592

I have a DPM not Mixture or Eulerian.

Again Thank you very much friend.

 NormalVector January 30, 2013 15:05

Your report type could be something like "Area Weighted Average" and then your field variable could be "Mass Fraction of ________". Does that get you what you want?

 Al-Hashimi January 30, 2013 18:27

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I'm sure it will work, but my friend, there is nothing in the field variable called "Mass Fraction" .
Many thanks for your kind assistance

Attachment 18639

 NormalVector January 30, 2013 19:47

Sure there is. The report type is "Area Weighted Average", the field variable is "Species..." and then you choose "Mass fraction of _____". Of course that's if you have enable species transport. If you haven't, maybe I misread your question but it seems you should be keeping track of multiple species. I'm not sure if it's the same when you do a multiphase simulation.