Easy way to split pressure plots
 

I currently have a symmetric aerofoil 2D simulation for which I wish to obtain separate pressure distributions on the upper and lower surface.

Considering that I have already run the simulations, what would be the best way to go about this? Is it through a threshold derived part ? How do I go about doing that once I've set the threshold to a position (in y axis) ?

Thank you in advance.

yes use a threshold with the wing surface as the input part so you have just one half of the wing then create cut section plane through this threshold part to get a line and plot that part. same for the other half