CorrectPhi in interFoam

Sasy · November 7, 2013, 03:10

Hi Foarmers,
I'm new in openFoam and I have a Question about correctPhi....
I dont realy dont what happens in this header..

why use correctPhi?what is Pcorr?
anybody have information about this header or have user guide pdf about this, i will be gratfull provide for me....
Regards,

Bernhard · November 7, 2013, 03:40

If you don't have a boundary condition controlling the pressure reference, i.e. all of your boundaries are zero gradient on pressure, then it will make sure the total inflow and outflow of mass is conserved.

By the way, the same function, adjustPhi, is called in pEqn.H as well (compare pEqn.H with correctPhi.H).

Sasy · November 7, 2013, 04:39

Quote:

Originally Posted by Bernhard

If you don't have a boundary condition controlling the pressure reference, i.e. all of your boundaries are zero gradient on pressure, then it will make sure the total inflow and outflow of mass is conserved.

By the way, the same function, adjustPhi, is called in pEqn.H as well (compare pEqn.H with correctPhi.H).

Thank you for Reply...
So If I want add source term to pEqn ,i shoud add this source term to pcorr??

bieshuxuhe · March 27, 2014, 21:34

hello！I am a new member.
what is Pcorr ?

and i think maybe just add source to pEqn is ok.
thank you !

rapierrz · November 28, 2015, 12:20

Hi friends,

I don't understand the role of correctPhi.H in interFoam solver.

Pease help me!

rapierrz · November 29, 2015, 03:59

can I add source term for pressure equation to pcorr equation???

sharonyue · March 22, 2016, 04:35

Nope,

Bernhard's answer is quite challenging to me, adjustphi() perform the functino as he said. But correctPhi() in interFoam can be neglected, pcorr is important for interDyMFoam. I guess the reason to include correctPhi() in interFoam is for consistent with interDyMFoam when you start your simulation with interDyMFoam and want to continue your simulation with interFoam.

lilinmin · March 22, 2016, 06:10

Quote:

Originally Posted by Bernhard

If you don't have a boundary condition controlling the pressure reference, i.e. all of your boundaries are zero gradient on pressure, then it will make sure the total inflow and outflow of mass is conserved.

By the way, the same function, adjustPhi, is called in pEqn.H as well (compare pEqn.H with correctPhi.H).

Can you help me? I want to read "nu" with interFoam and create a field of mixture viscosity. I problem is posted here:
http://www.cfd-online.com/Forums/ope...m-dpmfoam.html

November 7, 2013, 03:10	CorrectPhi in interFoam	#1
Sasy New Member sasan Join Date: Sep 2013 Posts: 28 Rep Power: 12	Hi Foarmers, I'm new in openFoam and I have a Question about correctPhi.... I dont realy dont what happens in this header.. why use correctPhi?what is Pcorr? anybody have information about this header or have user guide pdf about this, i will be gratfull provide for me.... Regards,

November 7, 2013, 03:40		#2
Bernhard Senior Member Bernhard Join Date: Sep 2009 Location: Delft Posts: 790 Rep Power: 21	If you don't have a boundary condition controlling the pressure reference, i.e. all of your boundaries are zero gradient on pressure, then it will make sure the total inflow and outflow of mass is conserved. By the way, the same function, adjustPhi, is called in pEqn.H as well (compare pEqn.H with correctPhi.H). Tushar@cfd, amolrajan, rapierrz and 3 others like this.

November 28, 2015, 12:20	role of CorrectPhi in interFoam?	#5
rapierrz Senior Member Hesam Join Date: Feb 2015 Posts: 139 Rep Power: 11	Hi friends, I don't understand the role of correctPhi.H in interFoam solver. Pease help me!

March 22, 2016, 04:35		#7
sharonyue Senior Member Dongyue Li Join Date: Jun 2012 Location: Beijing, China Posts: 838 Rep Power: 17	Nope, Bernhard's answer is quite challenging to me, adjustphi() perform the functino as he said. But correctPhi() in interFoam can be neglected, pcorr is important for interDyMFoam. I guess the reason to include correctPhi() in interFoam is for consistent with interDyMFoam when you start your simulation with interDyMFoam and want to continue your simulation with interFoam. __________________ My OpenFOAM algorithm website: http://dyfluid.com By far the largest Chinese CFD-based forum: http://www.cfd-china.com/category/6/openfoam We provide lots of clusters to Chinese customers, and we are considering to do business overseas: http://dyfluid.com/DMCmodel.html

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March 27, 2014, 21:34		#4
bieshuxuhe Member xuhe-openfoam Join Date: Aug 2013 Location: DaLian，china Posts: 82 Rep Power: 12	hello！I am a new member. what is Pcorr ? and i think maybe just add source to pEqn is ok. thank you !

November 29, 2015, 03:59		#6
rapierrz Senior Member Hesam Join Date: Feb 2015 Posts: 139 Rep Power: 11	can I add source term for pressure equation to pcorr equation???