How to select interface tension, wetting contact angle and curvature radius in Yang_laplace_equation?

[gxw-ll]

Hi, Professor!
In your example young_laplace_validation, why is the interface tension sigma = 0.15? The wetting angle is Theta = 180-156.4? The curvature radius choice is r = 3,4,5,6,11,16,21? If I want to do a gas-water multiphase flow simulation, where the wetting angle is 45 degrees and the gas-water interfacial tension is 0.072 N/m, how do I Pick Sigma, Theta, and R?