Calling fvPatchField::internalField.name()

Gerry Kan · August 6, 2020, 08:43

Howdy Foamers:

While I am debugging my code I came across something quite strange.

I have an fvPatchField defined, and it calls a function fvPatchField::internalField.name() to identify which variable it is.

When this call is made before the time loop, I get the normal variable (say "p", "T", "U").

However, the same call inside the time loop, I end up getting the "_0" attached to it (i.e., "p_0", "T_0", "U_0").

I am wondering why this is the case? Is it because the "_0" variable refers to the variables in the current time step, and those without refers to the variable being solved towards the end of the time step?

Thanks in advance, Gerry.

Gerry Kan · August 6, 2020, 08:45

Okay, it seems that my hypothesis is correct according to this link.

What are h_0 and h_0_0 in chtMultiRegionFoam solver?

Gerry.

August 6, 2020, 08:43	Calling fvPatchField::internalField.name()	#1
Gerry Kan Senior Member Gerry Kan Join Date: May 2016 Posts: 350 Rep Power: 10	Howdy Foamers: While I am debugging my code I came across something quite strange. I have an fvPatchField defined, and it calls a function fvPatchField::internalField.name() to identify which variable it is. When this call is made before the time loop, I get the normal variable (say "p", "T", "U"). However, the same call inside the time loop, I end up getting the "_0" attached to it (i.e., "p_0", "T_0", "U_0"). I am wondering why this is the case? Is it because the "_0" variable refers to the variables in the current time step, and those without refers to the variable being solved towards the end of the time step? Thanks in advance, Gerry.

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August 6, 2020, 08:45		#2
Gerry Kan Senior Member Gerry Kan Join Date: May 2016 Posts: 350 Rep Power: 10	Okay, it seems that my hypothesis is correct according to this link. What are h_0 and h_0_0 in chtMultiRegionFoam solver? Gerry.