Help Plotting Function vs. Position in Fluent
 

Hi everyone, I'm new to these forums and came here to see if I could get any help solving a small problem I have with creating a plot in Fluent.

I am simulating the flow through a converging nozzle and need to plot a function of mass flow rate versus pressure ratio (m_dot vs. p1/p2) along the length of the nozzle in order to verify my calculated value for critical back pressure agrees with the value determined by the simulation. My question is how exactly should I go about this? I have been trying to read through the help documentation but cannot seem to find the answer. The closest I came was by looking at defining a custom field function but I could not manage to figure out how to piece together the desired function based on the available menu items.

If anyone could give me any guidance on how to create this plot I would greatly appreciate it!