CFD Online Discussion Forums

CFD Online Discussion Forums (http://www.cfd-online.com/Forums/)
-   FLUENT (http://www.cfd-online.com/Forums/fluent/)
-   -   Two fluids in two different volumes (http://www.cfd-online.com/Forums/fluent/108303-two-fluids-two-different-volumes.html)

ņapi October 18, 2012 21:30

Two fluids in two different volumes
 
Hi everyone

Iīm simulating a solar receptor where i need to remove the heat from the receptor with the help of a heat exchanger, in the receptor domain i use air as a fluid, but in the heat exchanger domain i need to use water to remove the heat and then quantify it, but the issue is that i canīt work with these two different fluids (and properties) at the same time, how can i do that? :confused:


Thanks in advance.

syavash October 19, 2012 10:26

Quote:

Originally Posted by ņapi (Post 387418)
Hi everyone

Iīm simulating a solar receptor where i need to remove the heat from the receptor with the help of a heat exchanger, in the receptor domain i use air as a fluid, but in the heat exchanger domain i need to use water to remove the heat and then quantify it, but the issue is that i canīt work with these two different fluids (and properties) at the same time, how can i do that? :confused:


Thanks in advance.

You should define two zones, one for air and one for water and specify properties to each one.

ņapi October 19, 2012 13:21

Quote:

Originally Posted by syavash (Post 387519)
You should define two zones, one for air and one for water and specify properties to each one.

Sure, i understand that, in gambit i already define both zones, but when i try to specify the different fluids properties for each itīs not possible, both zones works with the same fluid and i need air in one zone with polynomial properties and constant properties of water for the other zone.

syavash October 19, 2012 15:34

Quote:

Originally Posted by ņapi (Post 387540)
Sure, i understand that, in gambit i already define both zones, but when i try to specify the different fluids properties for each itīs not possible, both zones works with the same fluid and i need air in one zone with polynomial properties and constant properties of water for the other zone.

Is water included in material panel?!

ņapi October 19, 2012 15:53

Quote:

Originally Posted by syavash (Post 387574)
Is water included in material panel?!

yes, itīs included, but, if i change it to water, it change it to all the domain, and donīt just to the heat exchanger domain. I need to separate both fluids (water and air). Itīs seem strange to me, because when i do the geometry and mesh in gambit, i declare both fluids as separated.


All times are GMT -4. The time now is 09:29.