[wildli]

Dear all,
I got stuck with some data post treatment with FLUENT about circumferential mass-averaged axial velocity, please help me if you can.

To simplize the question, it is like this: fluid flows from cylinder circular inlet to circular outlet, there are several cylindrical surface such as r/R_tip from inlet to outlet, at the same time, tranverse planes cut vertical to streamwise direction, thus there will be some circular lines formed from intersections.
My question is how to calculate these circumferential mass averaged axial velocity at these intersections.

To make the quesion more clear, one paper has done this plot, this link is:
www.springerlink.com/content/gm28j833852225p0/fulltext.pdf
it is Figure 12, circumferentially mass averaged axial velocity(computation). my problem is how the author made Figure 12 through FLUENT, in the figure, x-axis is for axial velocity, y axis is for different radial location.

I tried to make locations from surface integrals in FLUENT, but it looks like impossbile to average the value based on the intersection circles. I am not sure how to do this in FLUENT.

Please help me if you can, I have been stuck from this problem for several days.
Thanks a lot!!!