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-   -   mass flow boundary with fractional mass flux specifications (https://www.cfd-online.com/Forums/cfx/88382-mass-flow-boundary-fractional-mass-flux-specifications.html)

ehsan_am86 May 16, 2011 08:24

mass flow boundary with fractional mass flux specifications
 
Hi Guys.
I am simulating a gas-liquid system with ANSYS-CFX and i want to set mass flow boundaries with fractional mass flux specifications in my work.
I cant find this kind of boundary in mass and momentum option.
I am waiting for answer my question...

windhair May 18, 2011 07:02

It is definitely possible, you can specify it with wall velocity component combined with mass souce term.

ehsan_am86 May 19, 2011 03:02

mass source term
 
Quote:

Originally Posted by windhair (Post 308127)
It is definitely possible, you can specify it with wall velocity component combined with mass souce term.

thank you windhair for your help,but i want to set this kind of boundary condition in liquid outlet,not wall.Do i need mass flux for this boundary?
I have just amount of outlet velocity.
another my question is about mass source term in sources tab.at this part it requests me mass flux volume fraction and i dont know what value i have to use.
its useful to know that in the liquid outlet bondary exist just liquid.


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