Abstract:

The 3D Level Set equations were introduced，which were discretized in space by the fifth order weighted essentially non-oscillatory scheme.Its accuracy was proven through capturing 3D moving interface.The governing equations were established for the viscous，incompressible，Newtonian fluids，which were discretized by the finite volume method based on non-staggered grid.The problem of the pressure-velocity decoupling was solved by the algorithm of momentum interpolation（MI）.The 3D flow process of injection molding was simulated by coupling the Level Set method and the finite volume method based on non-staggered grid，which can precisely capture the front surface of melt and predict the flow features，such as pressure and velocity at different times.The results indicated that the method can capture 3D front surface of melt and predict the flow features in injection process.