[jamie7963]

I have created a 3d pipe flow problem for water in Fluent and solved it setting the flow to laminar, i am only interested the wall shear stress on one of the surfaces. When i solve i get a range of shear stresses, is it possible to get specific values?

the inlet velocity is 0.0005m/s and the outlet is pressure

[villager]

Originally Posted by jamie7963

When i solve i get a range of shear stresses, is it possible to get specific values?

Umm, you may want:
1) obtain a mean (min, max...) value over some zone (surface, plane, line) - use your zone/surface (appeared in boundary conditions) /plane (created through Surface -> Plane) / line (created through Surface -> Line) to calculate Reports/Volume Integrals (for zones) / Surface Integrals (for surfaces, planes, lines) of the variable that you want.
How to create plane/line/point

At specific point: you can use Surface -> Point to create point somewhere in your model, than calculate and monitor Integral value (Reports...) again.

2) you can print all values from a specific location (zone/surface/plane/line/point) to file (to postprocess in Excel, etc.):
File -> Export -> Solution data... Use ASCII file type, choose the variable and location that you want. I prefer "Cell center" values (number of values agrees with number of mesh elements involved in the zones choosen). Then, press Write... and specify a filename with extension (e.g., 1.txt) and directory to save the file.

Image below is an example how to export Static Temperature distribution from some surface (iwall) to file. Also, I attach link to .txt to see how ASCII export looks like.


Hope, this would help!