||March 26, 2012 19:12
OK, so if I'm understanding correctly you want a list of y+ values at a certain cross section of the pipe for example..
Plots -> XY Plot -> Set up -> Y Axis again Turbulence, beneath that Yplus, leave X Axis as Direction vector. Then beneath the list of surfaces click New surface -> Iso-surface -> on the right pick your pipe wall -> on the left pick under "Surface of constant" pick Mesh -> then (this part I'm going to guess as I can't see your geometry) you'd pick either X, Y or Z coordinate in the drop down menu beneath the upper Mesh choice. Basically, let's say your pipe centerline is the Z axis.. you would choose Z-Coordinate and then if the pipe goes from (0 0 0) to (0 0 10) meaning it's 10 meters long, you would enter anything between 0 and 10 in the Iso-Values field and that would be the cross section position where it's gonna display the y+ plot. So for example you'd put 5 in the Iso-Values and click Create.
Then you're back at the plot window and now you select the newly created surface named "z-coordinate-bla", in the upper left Node values is probably ticked, if not - tick it. Then you'd put 1 in the X or Y field (test for urself) under plot direction and click Plot.. there goes your plot of y+ values over a pipe cross section. If you tick Write to file in the upper left corner Plot button will change to a Write button and you can write the values over node positions in the .txt file.
/edit .. Correction, 1 doesn't go in the Z field since that's the cross section position..