How to simulate water retention curves with different shapes?

[morendong]

Hello, everyone, I'd like to simulate the process of air invasion with various types of soils.
And the soils were generated through porespy of polydisperse_spheres.
As I adjusted the parameter of loc and scale, the pore sizes were changed, but the shape of the water retention curve did not change obviously.
I want to make different curves as follows. Can you give me some advice?
Thanks.