How to consider the effect of gravity in ractingFoam

ztdep · April 11, 2021, 07:32

hello, friends:
I need to modeling the mixing of two gas at different temperature with reactingFoam, but it seems that the default solver didn't taken into the gravity effect. so how to take it into account.

Regars

clapointe · April 11, 2021, 10:41

There has been a buoyant version -- named something to the effect of rhoReactingBuoyantFoam, depending on the version/flavor of OpenFOAM -- that does include gravity for as long as I remember. This should be what you are looking for. Here's a link to the solver in a recent release : https://develop.openfoam.com/Develop...ingBuoyantFoam.

Caelan

braker · April 17, 2021, 04:32

You can implement an additional rho*g therm in UEquation, to create g field and read from dictionary you can use headers from some existing solver or play around by yourself.

April 11, 2021, 07:32	How to consider the effect of gravity in ractingFoam	#1
ztdep Senior Member p ding Join Date: Mar 2009 Posts: 427 Rep Power: 19	hello, friends: I need to modeling the mixing of two gas at different temperature with reactingFoam, but it seems that the default solver didn't taken into the gravity effect. so how to take it into account. Regars

April 11, 2021, 10:41		#2
clapointe Senior Member Join Date: Aug 2015 Posts: 494 Rep Power: 14	There has been a buoyant version -- named something to the effect of rhoReactingBuoyantFoam, depending on the version/flavor of OpenFOAM -- that does include gravity for as long as I remember. This should be what you are looking for. Here's a link to the solver in a recent release : https://develop.openfoam.com/Develop...ingBuoyantFoam. Caelan __________________ Public git repository : https://github.com/clapointe2011/public

April 17, 2021, 04:32	How to consider the effect of gravity in ractingFoam	#3
braker New Member Join Date: May 2015 Posts: 4 Rep Power: 11	You can implement an additional rhog therm in UEquation, to create g field and read from dictionary you can use headers from some existing solver or play around by yourself. Last edited by braker; April 17, 2021 at 09:45.*

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