1. plunger velocity = 50, kinematic viscosity = 0.0114, Re = 4.38*10⁴
    a. water viscosity and density
    b. 10 times of water viscosity and density
    c. 20 times of water viscosity and density

2. plunger velocity = 75, kinematic viscosity = 0.0171, Re = 4.38*10⁴
    a. water viscosity and density = 0.666
    b. water density and viscosity = 0.0171
 

These simulations show the effect of kinematic viscosity which is dynamic vicosity divided by density.
At the same velocity, although density and viscosity change, if kinematic viscosity is not changed, the wave patterns are nearly identical.
Although Re number is the same, if plunger velocities are different, wave patterns are also different.