# Two fluids in two different volumes

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 October 18, 2012, 21:30 Two fluids in two different volumes #1 New Member   Ņandopi Join Date: Oct 2012 Posts: 6 Rep Power: 6 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? Thanks in advance.

October 19, 2012, 10:26
#2
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Ehsan Asgari
Join Date: Apr 2010
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Quote:
 Originally Posted by ņapi 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? Thanks in advance.
You should define two zones, one for air and one for water and specify properties to each one.

October 19, 2012, 13:21
#3
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Ņandopi
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Quote:
 Originally Posted by syavash 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.

October 19, 2012, 15:34
#4
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Ehsan Asgari
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Quote:
 Originally Posted by ņapi 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?!

October 19, 2012, 15:53
#5
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Ņandopi
Join Date: Oct 2012
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Quote:
 Originally Posted by syavash 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.

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