PRESTO in OpenFOAM

sina_mech · November 14, 2014, 14:10

Hi everybody :-)

I'd like to use PRESTO (Pressure Staggering Option) in OpenFOAM. I know that this option is a preset in Fluent, but I couldn't find it in OpenFOAM.

I appreciate any help/comment.

nimasam · November 15, 2014, 04:54

There is no such option in openfoam

sina_mech · November 15, 2014, 13:12

Thanks for your reply Nima. I'm looking for a more accurate pressure solver, for swirling flow applications. So do you have any suggestion?

nimasam · November 15, 2014, 14:12

Whats wrong with current solvers?

sina_mech · November 15, 2014, 22:33

The results are completely different compared to what I get by Fluent. I have 2 inlets and 2 pressure outlets (with different pressures)! but the solution converges to "2 inlets, 1 pressure outlet, and 1 pressure inlet".

HosamAlrefaie · July 27, 2021, 03:35

So what option is available in OpenFOAM that is similar to PRESTO! in Fluent?

I am trying to solve a case with buoyancy driven flow.

ErenC · August 1, 2021, 07:15

IF results are "completely" different it means you're using wrong schemes in OpenFOAM, or you're doing something very wrong.

But, if PRESTO is a must, you can code it and we can use it in future too...

November 14, 2014, 14:10	PRESTO in OpenFOAM	#1
sina_mech Senior Member SinaJ Join Date: Nov 2009 Posts: 136 Rep Power: 16	Hi everybody :-) I'd like to use PRESTO (Pressure Staggering Option) in OpenFOAM. I know that this option is a preset in Fluent, but I couldn't find it in OpenFOAM. I appreciate any help/comment.

November 15, 2014, 04:54		#2
nimasam Senior Member Nima Samkhaniani Join Date: Sep 2009 Location: Tehran, Iran Posts: 1,266 Blog Entries: 1 Rep Power: 24	There is no such option in openfoam Gerhard likes this. __________________ My Personal Website (http://nimasamkhaniani.ir/) Telegram channel (https://t.me/cfd_foam)

November 15, 2014, 14:12		#4
nimasam Senior Member Nima Samkhaniani Join Date: Sep 2009 Location: Tehran, Iran Posts: 1,266 Blog Entries: 1 Rep Power: 24	Whats wrong with current solvers? __________________ My Personal Website (http://nimasamkhaniani.ir/) Telegram channel (https://t.me/cfd_foam)

August 1, 2021, 07:15		#7
ErenC Member Eren Join Date: Aug 2018 Posts: 86 Rep Power: 8	IF results are "completely" different it means you're using wrong schemes in OpenFOAM, or you're doing something very wrong. But, if PRESTO is a must, you can code it and we can use it in future too... nikoscham likes this.

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November 15, 2014, 13:12		#3
sina_mech Senior Member SinaJ Join Date: Nov 2009 Posts: 136 Rep Power: 16	Thanks for your reply Nima. I'm looking for a more accurate pressure solver, for swirling flow applications. So do you have any suggestion?

November 15, 2014, 22:33		#5
sina_mech Senior Member SinaJ Join Date: Nov 2009 Posts: 136 Rep Power: 16	The results are completely different compared to what I get by Fluent. I have 2 inlets and 2 pressure outlets (with different pressures)! but the solution converges to "2 inlets, 1 pressure outlet, and 1 pressure inlet".

July 27, 2021, 03:35		#6
HosamAlrefaie New Member Hosam Alrefaie Join Date: Jul 2021 Posts: 24 Rep Power: 4	So what option is available in OpenFOAM that is similar to PRESTO! in Fluent? I am trying to solve a case with buoyancy driven flow.