Numerical Study for Typical Unsteady Hydraulic Jump

The VOF model(Volume of Fluid) is used to track the changes of free surface and simulate numerically the whole process from stagnation to final steady state of typical hydraulic jump turbulence flow.The study defined the changes of free surface on hydraulic jump at various time,mainly analyzed the shape of free surface,structure of internal flow field,the layout of velocity vector and pressure fields during hydraulic jump.The results show that the VOF model may describe effectively the turbulence characteristics similar with hydraulic jump,the complex free surface flow channel,and it is feasible and practical.