How to turn off pressure strain term?

pcornejo · March 23, 2015, 11:00

Hi all,
Need to know if it is possible to turn off the pressure strain term in the Reynolds Stress turbulence model.

Cya

zkzkzk010537 · March 23, 2015, 12:03

Hi,

Why do you want to turn off the pressure strain term? To do so, i think you could add a (-pressure strain term) into Source term of momentum equation? But pressure strain term is so important when you use RSM model.

pcornejo · March 23, 2015, 13:15

I'm interested in the turbulent energy redistribution between the normal components caused by pressure fluctuations. That way i need to simulate the same configuration with and without including the pressure strain term.

zkzkzk010537 · March 23, 2015, 13:31

Then you must have a 3D case with large pressure gradient say swirl? Otherwise it will not really show much difference using RSM or two equations models.

pcornejo · March 23, 2015, 13:33

obviously.

So do you have another straightforward way to do it?

zkzkzk010537 · March 24, 2015, 08:21

No, that's the only way i can think of..

March 23, 2015, 11:00	How to turn off pressure strain term?	#1
pcornejo New Member Pablo Cornejo Join Date: Mar 2015 Posts: 3 Rep Power: 11	Hi all, Need to know if it is possible to turn off the pressure strain term in the Reynolds Stress turbulence model. Cya

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Application of a pressure gradient/forcing term in a compressible pipe flow	mrs206	OpenFOAM	1	July 14, 2017 12:36
Setting up the pressure variation due to tornado in a duct(UDF)+animation	guillaume1990	FLUENT	0	March 3, 2014 11:59
Static vs dynamic pressure in Reynolds stress source term	natrask	OpenFOAM Programming & Development	0	August 13, 2010 14:45
Gas pressure question	Dan Moskal	Main CFD Forum	0	October 24, 2002 22:02
what the result is negatif pressure at inlet	chong chee nan	FLUENT	0	December 29, 2001 05:13

March 23, 2015, 12:03		#2
zkzkzk010537 Member kai Join Date: Jul 2013 Posts: 54 Rep Power: 12	Hi, Why do you want to turn off the pressure strain term? To do so, i think you could add a (-pressure strain term) into Source term of momentum equation? But pressure strain term is so important when you use RSM model.

March 23, 2015, 13:15		#3
pcornejo New Member Pablo Cornejo Join Date: Mar 2015 Posts: 3 Rep Power: 11	I'm interested in the turbulent energy redistribution between the normal components caused by pressure fluctuations. That way i need to simulate the same configuration with and without including the pressure strain term.

March 23, 2015, 13:31		#4
zkzkzk010537 Member kai Join Date: Jul 2013 Posts: 54 Rep Power: 12	Then you must have a 3D case with large pressure gradient say swirl? Otherwise it will not really show much difference using RSM or two equations models.

March 23, 2015, 13:33		#5
pcornejo New Member Pablo Cornejo Join Date: Mar 2015 Posts: 3 Rep Power: 11	obviously. So do you have another straightforward way to do it?

March 24, 2015, 08:21		#6
zkzkzk010537 Member kai Join Date: Jul 2013 Posts: 54 Rep Power: 12	No, that's the only way i can think of..