wall shear stress graph
 

Dear all
This is a very basic question. But I could not get the solution for this.
How to plot a axial length vs wall shear stress of an simple pipe flow.

I have created a plane and polyline . From this, I could not plot the wall shear stress graph. kindly help me to draw the graph.

Thank you

Try using a line instead.

Thank you for your reply

I consider fluid and porous domain. in my case I use wall is porous medium and the wall is not a uniform cross section. In such case I have created a plane and created poly line . I don't know how to draw a line if the wall is not a uniform cross section and how to get wall shear stress.

Thank you