buoyantBoussinesqPimpleFoam Vs pisoFoam with buoyancy

Sherlock_1812 · May 7, 2014, 13:48

Hi all,

I'm trying to compare the results for a natural convection in a 2D heated cavity case with buoyantBoussinesqPimpleFoam and pisoFoam with the source term for buoyancy. It is just an exercise.

What fields should I take care while setting up the case in the latter? Pressure is dealt with differently in both solvers, so what precautions should I take?

jherb · May 20, 2014, 11:20

Did you have a look at buoyantPimpleFoam. It should do exactly what you are planing.

Sherlock_1812 · May 20, 2014, 11:48

Hi Joachim,

I want to compare the results of BuoyantBoussinesqPimpleFoam with one of solvers not a part of the buoyancy solvers that OpenFOAM has. I'm doing this to better understand the p_rgh term. Since ordinary incompressible flows have just the pressure field 'p', how would one achieve a buoyancy driven flow here while adding rho*g*beta*(T-TRef) as a source term to the momentum equation. How should I initialise the pressure and other fields as?

May 7, 2014, 13:48	buoyantBoussinesqPimpleFoam Vs pisoFoam with buoyancy	#1
Sherlock_1812 Senior Member Srivathsan N Join Date: Jan 2013 Location: India Posts: 101 Rep Power: 13	Hi all, I'm trying to compare the results for a natural convection in a 2D heated cavity case with buoyantBoussinesqPimpleFoam and pisoFoam with the source term for buoyancy. It is just an exercise. What fields should I take care while setting up the case in the latter? Pressure is dealt with differently in both solvers, so what precautions should I take? __________________ Regards, Srivaths

May 20, 2014, 11:48		#3
Sherlock_1812 Senior Member Srivathsan N Join Date: Jan 2013 Location: India Posts: 101 Rep Power: 13	Hi Joachim, I want to compare the results of BuoyantBoussinesqPimpleFoam with one of solvers not a part of the buoyancy solvers that OpenFOAM has. I'm doing this to better understand the p_rgh term. Since ordinary incompressible flows have just the pressure field 'p', how would one achieve a buoyancy driven flow here while adding rhogbeta(T-TRef) as a source term to the momentum equation. How should I initialise the pressure and other fields as? __________________ Regards, Srivaths Last edited by Sherlock_1812; May 21, 2014 at 06:16.*

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Differences in solution method for pisoFoam and buoyantBoussinesqPisoFoam	mchurchf	OpenFOAM	7	August 6, 2023 09:12
How to realize Boussinesq approximation (buoyancy) in Fluent-UDF	dochanxu	FLUENT	1	August 12, 2022 05:26
pisoFoam compiling error with OF 1.7.1 on MAC OSX	Greg Givogue	OpenFOAM Programming & Development	3	March 4, 2011 17:18
Buoyancy Turbulence	Chilli83	CFX	3	April 14, 2009 20:28
Buoyancy production for species concentration	George Gerber	FLUENT	1	May 25, 2006 16:56

May 20, 2014, 11:20		#2
jherb Senior Member Joachim Herb Join Date: Sep 2010 Posts: 650 Rep Power: 21	Did you have a look at buoyantPimpleFoam. It should do exactly what you are planing.