Kalyan Goparaju
Ansys Employee

Hello Tim, 

Try the following approach

1. Create an iso-surface of x at the required value. Ensure that the train zone is selected in the 'From Surface' section. 

2. Create a custom-field-function that calculates the polar angle.

3. Use XY plot to graph the variation of Cp with polar angle on the iso-surface created in Step-1