Yes, this is possible, though a selection filter will keep whole cells, and not cut them.
In the selection criteria for the main (or another) volume postprocessing mesh ,you can use a "box" selection criteria rather than "all[]" to reduce the output. See https://www.code-saturne.org/cms/sites/ ... ect_c.html for selection criteria documentation.
I've understand that I shuold box function to remove inlet and outlet mesh.
However, where should I put it in subroutine code?
At the moment, my subroutine is
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call getfbr('inlet', nlelt, lstelt)
do ilelt = 1, nlelt
ifac = lstelt(ilelt)
itypfb(ifac) = ientre
!Dirichlet B.C for pressure:
icodcl(ifac,ipr) = 1
rcodcl(ifac,ipr,1) = 101325.633
!Dirichlet B.C for pressure:
icodcl(ifac,ipr) = 1
rcodcl(ifac,ipr,1) = 101325.000
!Neumann B.C for velocity:
icodcl(ifac,iu)= 3
icodcl(ifac,iv)= 3
icodcl(ifac,iw)= 3
enddo
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Do you have some examples for this?
Although I understand what I want to do, I am not sure where I write the code in subroutine code.
If I put like this; call getfbr('2 and x < 0.01', nlelt, lstelt),
this can be available for boundary condition setting, right?
For output reduction by box function, what kind of code I have to write?
I already know that the region I need is box [0, 9.65, 0, 3.6, 0 0.05].
If you need the inlet and outlet in the mesh and computation but not in the postprocessing, this has nothing to do with the boundary functions. So you do not need to modify those.
To filter postprocessing, with a simple box, you do not need user-defined functions, but only to apply the correct selection filter in the GUI in postprocessing/meshes.