Boiling Curve
 

Hello Everyone
I'm working on cooling of a hot plate using water jet numerically. I'm interested in plotting the boiling curve X-axis = delta T ( Tsurface-Tsaturated) / Y-axis =Heat flux. I tried doing it but I didn't get any results. I just want to make sure if I'm using the right formulas and parameters or not.

What i know:
T surface is the temperature of the top surface of the plate .
T saturated is 100 C
what about the Heat flux I know flunet calculates it but since the problem is 2d I get undefined value.

I hope I can get a response.
Thank you in advance.