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March 20, 2013, 04:19 
Explanation of flux() method

#1 
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Fumiya Nozaki
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I try to describe the role of flux() method and how it achieves it's role in OpenFOAM.
This topic is difficult for me to comprehend, so I'm grad if the following explanations could be of some help
Please correct the mistakes, if any. Best regards, Fumiya Last edited by fumiya; March 21, 2013 at 10:09. 

August 25, 2013, 23:40 

#2  
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Dongyue Li
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Quote:
BTW, do you think Code:
fvScalarMatrix pEqn ( fvm::laplacian(rAU, p) == fvc::div(phiHbyA) ); fvScalarMatrix pEqn ( fvm::div(A*fvc::grad(p)) == fvc::div(phiHbyA) ); 

December 21, 2016, 10:39 

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longyun wang
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Quote:
I am studing icofoam now, and I found the code: [/CODE] 77 surfaceScalarField phiHbyA 78 ( 79 "phiHbyA", 80 fvc::flux(HbyA) 81 + fvc::interpolate(rAU)*fvc::ddtCorr(U, phi) 82 ); [/CODE] I can't understand why there is an item "fvc::interpolate(rAU)*fvc::ddtCorr(U, phi)"? According to the equation above, there should be only the first item. 

December 24, 2016, 12:40 

#4 
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Fumiya Nozaki
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Hi,
The term "ddtCorr" is considered in the transient solvers. The following references could be of some help: Best regards, Fumiya
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April 3, 2017, 20:36 

#5 
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yuancong
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i do not think so. fvc::grad(p) returns a volscalarfield. so the second pEqn is actually based on grad(p).


January 2, 2018, 11:05 
Flux in 2D Model

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Dear Foamers,
I am trying to add a source term to alpha using mass flux. I am starting with a circle and while using .flux(), I can see my circle changes to a square. I am wondering if .flux() can be used in 2D the same as 1D. Thanks, 

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