air entrainment
2.The simulation experiment shows that the shorter teeming time is, the less air entrainment of tapping is; the lower teeming height is, the less air entrainment of tapping is.
3.Overflow weir is used to control water hammer and prevent air entrainment in long supply pipelines.
4.Hydraulics model is built by using similar theories, which simulates the process of air entrainment of tapping.
