2 inlets with a different gas in each = a multiphase flow solver ?

adrieno · April 4, 2016, 10:13

Hi foamers,

I was wondering if I had to use a multiphase flow solver like multiphaseEulerFoam in order to handle two different inlets with two gases although two gases are just making one single physical phase ?

To be more precise :
In fact I have two inlets on something which looks like a pipe.
One gas for each inlet.
The two gases have their own properties (pressure, temperature...).

I would like to simulate a compressible and turbulent flow (with a RASmodel) but I don't know which solver is able to handle that.
A "simple" compressible flow solver (like rhoPimpleFoam) or a multiphase flow solver (like multiphaseEulerFoam) ?

adrieno · April 5, 2016, 05:02

No idea ? Because I really don't know which OpenFOAM example to follow in order to start my case... It seems that there isn't any case like that...

adrieno · April 5, 2016, 06:00

Apparently I was completely on the wrong way.

I've found hints there:
http://www.cfd-online.com/Forums/ope...g-gas-gas.html

reactingFoam should do the job for mixing gases even if there is no reaction.

Have a nice project,
Adrien

April 4, 2016, 10:13	2 inlets with a different gas in each = a multiphase flow solver ?	#1
adrieno Member AdOo Join Date: Mar 2016 Location: Bordeaux Posts: 91 Rep Power: 10	Hi foamers, I was wondering if I had to use a multiphase flow solver like multiphaseEulerFoam in order to handle two different inlets with two gases although two gases are just making one single physical phase ? To be more precise : In fact I have two inlets on something which looks like a pipe. One gas for each inlet. The two gases have their own properties (pressure, temperature...). I would like to simulate a compressible and turbulent flow (with a RASmodel) but I don't know which solver is able to handle that. A "simple" compressible flow solver (like rhoPimpleFoam) or a multiphase flow solver (like multiphaseEulerFoam) ?

April 5, 2016, 06:00		#3
adrieno Member AdOo Join Date: Mar 2016 Location: Bordeaux Posts: 91 Rep Power: 10	Apparently I was completely on the wrong way. I've found hints there: http://www.cfd-online.com/Forums/ope...g-gas-gas.html reactingFoam should do the job for mixing gases even if there is no reaction. Have a nice project, Adrien wayne14 likes this.

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April 5, 2016, 05:02		#2
adrieno Member AdOo Join Date: Mar 2016 Location: Bordeaux Posts: 91 Rep Power: 10	No idea ? Because I really don't know which OpenFOAM example to follow in order to start my case... It seems that there isn't any case like that...