Including buoyancy/gravity in rhoPimpleFoam

mlohry · January 30, 2014, 14:27

I'm trying to simulate a buoyancy-driven flow in a box using rhoPimpleFoam. It isn't reading the "g" gravity file, and the results are clearly that of simple diffusion; e.g. it is ignoring all gravitational effects. Is there some place in the inputs to get rhoPimpleFoam to apply gravity/buoyancy effects?

manoj jaiswal · July 11, 2014, 07:45

can u please tell me how did you add the gravity field in you solver ?

rkc.cfd · July 12, 2014, 00:04

Hi,

Please look at the solver in combustion rhoReactingBuoyantFoam. From the differences in rhoReactingFoam and rhoReactingBuoyantFoam , you can figure out how to add gravity to rhoPimpleFoam. Just look at the pEqn.H File and CreateFields.H file.

Alos have a look at this wiki where gravity is handled :

http://openfoamwiki.net/index.php/Bu...sinesqPisoFoam

Cheers

sjohn2 · June 13, 2019, 14:00

Can some one give more information about this on OpenFoam-6?

agustinvo · June 14, 2019, 03:15

Hi,
maybeyou're interested in buoyantPimpleFoam. Take a look into its UEqn.

sjohn2 · June 17, 2019, 12:54

Hi,

I am new to OpenFoam programming. As I understand the rhopimpleFoam is based upon 'p' while, buoyantpimpleFoam is based on p_rgh. Can you tell me more details how to add the effects of gravity in the ehopimpleFoam solver. I see p_rgh used extensively in the UEqn and PEqn for bouyantpimpleFoam solver.

January 30, 2014, 14:27	Including buoyancy/gravity in rhoPimpleFoam	#1
mlohry New Member Mlohry Join Date: Mar 2013 Posts: 2 Rep Power: 0	I'm trying to simulate a buoyancy-driven flow in a box using rhoPimpleFoam. It isn't reading the "g" gravity file, and the results are clearly that of simple diffusion; e.g. it is ignoring all gravitational effects. Is there some place in the inputs to get rhoPimpleFoam to apply gravity/buoyancy effects?

July 11, 2014, 07:45	gravity	#2
manoj jaiswal New Member Manoj Jaiswal Join Date: Jun 2014 Posts: 3 Rep Power: 11	can u please tell me how did you add the gravity field in you solver ?

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July 12, 2014, 00:04		#3
rkc.cfd Member Krishna Join Date: Jun 2012 Posts: 33 Blog Entries: 1 Rep Power: 13	Hi, Please look at the solver in combustion rhoReactingBuoyantFoam. From the differences in rhoReactingFoam and rhoReactingBuoyantFoam , you can figure out how to add gravity to rhoPimpleFoam. Just look at the pEqn.H File and CreateFields.H file. Alos have a look at this wiki where gravity is handled : http://openfoamwiki.net/index.php/Bu...sinesqPisoFoam Cheers

June 13, 2019, 14:00		#4
sjohn2 Member Stanley John Join Date: Sep 2018 Posts: 79 Rep Power: 7	Can some one give more information about this on OpenFoam-6?

June 14, 2019, 03:15		#5
agustinvo Senior Member Agustín Villa Join Date: Apr 2013 Location: Alcorcón Posts: 313 Rep Power: 15	Hi, maybeyou're interested in buoyantPimpleFoam. Take a look into its UEqn.

June 17, 2019, 12:54		#6
sjohn2 Member Stanley John Join Date: Sep 2018 Posts: 79 Rep Power: 7	Hi, I am new to OpenFoam programming. As I understand the rhopimpleFoam is based upon 'p' while, buoyantpimpleFoam is based on p_rgh. Can you tell me more details how to add the effects of gravity in the ehopimpleFoam solver. I see p_rgh used extensively in the UEqn and PEqn for bouyantpimpleFoam solver.