1. Plunger velocity = 30cm/s, water, acceleration time = 0.1 sec (very low plunger velocity)
2. Plunger velocity = 52.5cm/s, water, acceleration time = 0.1 sec
3. Plunger velocity = 55cm/s, water, acceleration time = 0.1 sec
4. Plunger velocity
= 80cm/s, water, acceleration time = 0.1 sec ( very high plunger velocity)
For the above simulations, I have neglected the effect
of surface tension, considered 50% filling of the shot sleeve, and taken
water as the fluid by incorporating viscosity and density of water in the
present simulation, and the acceleration time is taken to be 0.1 sec.
In case of 30cm/s plunger velocity, wave created can't
reach top of the shot sleeve, and reflected waves entrap considerable amount
of air.
In case of 52.5 cm/s plunger velocity, wave created entraps
very small amount of air.
In case of 80 cm/s plunger velocity, wave created goes
along the top surface of the shot sleeve and then comes down. Created wave
entraps very much amount of air.