[longyun000]

Hi,
I am learning the icoFoam code and can't understand this:

surfaceScalarField phiHbyA
(
"phiHbyA",
fvc::flux(HbyA)
+ fvc::interpolate(rAU)*fvc::ddtCorr(U, phi)
);

so what is the phiHbyA's equation?
and when I search for the meaning of ddtCorr(U, phi), U.mesh and U.name in it I can't understant either.

{
return fv::ddtScheme<Type>::New
(
U.mesh(),
U.mesh().ddtScheme("ddt(" + U.name() + ')')
).ref().fvcDdtPhiCorr(U, phi);
}

what does above code stand for? thx a lot.

finally, I really don't understand how the piso loop run in code, can anyone explain for me? thx very much!

[Tobi]

You should use doxygen for understanding the code. phiByA is not an equation it is a surfaceScalarField like the flux. U.mesh() and U.name are just functions related to the volVectorField, alias GenericField. As I already mentioned, you should use Doxygen. There you will find your answer.

[longyun000]

Originally Posted by Tobi

You should use doxygen for understanding the code. phiByA is not an equation it is a surfaceScalarField like the flux. U.mesh() and U.name are just functions related to the volVectorField, alias GenericField. As I already mentioned, you should use Doxygen. There you will find your answer.

Thx very much for replying,
I have used doxygen and can't understand some code still.
I have known the meaning of phiHbyA, but when calculating it why there is a fvc::interpolate(rAU)*fvc::ddtCorr(U, phi).
Its code is:

154 ddtCorr
155 (
156 const GeometricField<Type, fvPatchField, volMesh>& U,
157 const GeometricField<Type, fvsPatchField, surfaceMesh>& Uf
158 )
159 {
160 return fv::ddtScheme<Type>::New
161 (
162 U.mesh(),
163 U.mesh().ddtScheme("ddt(" + U.name() + ')')
164 ).ref().fvcDdtUfCorr(U, Uf);
165 }

and I can't understand this entirely, could you expain it to me?