[Torsten]

Hi,

I'm going to simulate a laminar flow through a filter with CFX 14.5. We consider only one single fiber within the filter in 2D (see the red square in the sketch). The upper and lower borders are considered as a free slip wall. At a first step, the inlet velocity u0 is constant, which is only true for the first column of fibers. Thus, for the inner fibers the inlet velocity profile is given by the outlet velocity profile from the previous domain. We assume that the velocity profile does not change anymore after a couple of fibers (within a tolerance).

Therefor I ran a simulation with constant inlet velocity and exported a .csv file with the boundary profile at the outlet. But I can not use this profile for a second run as new inlet via profile data initializion, because this boundary profile contains the coordinates of the outlet and not the inlet.

I could change the .csv file manually and adapt the coordinates (just setting a minus in front of the x-coordinate due to the coordinate origin in the middle of the fiber), but that is not desired!

Perhapse does somebody know a solution to achieve the velocity profile iteratively/recursively in CFX without changing it manually?


Thanks in advance for your help,
Torsten