internalField vs. boundaryField

karman · July 4, 2020, 18:49

Hey everyone,

I haven't found a satisfactory answer in the OpenFoam Guide or Tutorial for the following question:

How exactly do the sections 'internalField' and 'boundaryField' of the U- and p-file (in the time folder 0 e.g.) interact?

Let's assume, I'm gonna set all cells to 0 m/s in 'internalField' (by syntax for uniform or nonuniform) and going to allocate the certain cells of the inlet boundary with 1 m/s in 'boundaryField' (what are obviously a part of the cells in 'internalField'). Will the values for the inlet cells be overwritten from 0 to 1 m/s???

mAlletto · July 5, 2020, 10:58

Boundary values are fixed (if fixed value is chosen) and internalField values are calculated by solving the system of equations

July 4, 2020, 18:49	internalField vs. boundaryField	#1
karman New Member Join Date: Jan 2013 Posts: 7 Rep Power: 13	Hey everyone, I haven't found a satisfactory answer in the OpenFoam Guide or Tutorial for the following question: How exactly do the sections 'internalField' and 'boundaryField' of the U- and p-file (in the time folder 0 e.g.) interact? Let's assume, I'm gonna set all cells to 0 m/s in 'internalField' (by syntax for uniform or nonuniform) and going to allocate the certain cells of the inlet boundary with 1 m/s in 'boundaryField' (what are obviously a part of the cells in 'internalField'). Will the values for the inlet cells be overwritten from 0 to 1 m/s??? __________________ Kind Regards Karman

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July 5, 2020, 10:58		#2
mAlletto Senior Member Michael Alletto Join Date: Jun 2018 Location: Bremen Posts: 616 Rep Power: 16	Boundary values are fixed (if fixed value is chosen) and internalField values are calculated by solving the system of equations