[zese]

Dear Friends

I simulated a flow inside a diverging pipe and I want to average my velocity field in azimuthal direction (Theta) to have axisymmetric flow field on a 2D plane. I thought that defining several plane inside the pipe with 30 degree difference may help but the number of nodes in each plane is different. do you know what can I do? or do you know which additional software would do that for me?

Thanks very much

[ghorrocks]

You could export the data and do it outside CFX (eg matlab, python etc).

But I do not know why you are doing this, what output you want or what you mean by planes with 30 degree difference and why different number of nodes is relevant.

[zese]

Originally Posted by ghorrocks

You could export the data and do it outside CFX (eg matlab, python etc).

But I do not know why you are doing this, what output you want or what you mean by planes with 30 degree difference and why different number of nodes is relevant.

thanks very much for your answer. let me be clear because I think my question was vague. I have a 3D simulation (picture.1) then I want to average velocity field (ur,utheta and uaxial) in theta direction to have picture. 2. I need it for further calculation with axisymmetric assumption. I have tried different ways:
1. I exported data in 3D and imported to MATLAB; then I tried to fitt a function the velocities and take an integral in theta direction which was unsuccessful
2. In CFD post I considered 8 plane with 45 degree difference in theta direction and exported velocity fields on these plane and avaraged between them.
I am not sure if this method is right or not.

[ghorrocks]

This should be straight forward in matlab/python from a 3D data export from CFD-Post. So check your maths in matlab.