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针对在铸件充型过程中,金属液表现出不同的流动特点,含有固体颗粒的金属液具有不可压缩非牛顿流的流动特性,而过热金属液具有不可压缩牛顿流的流动特点,采用Projection方法求解气体、过热金属液和含有固体颗粒的金属液的速度场,用Level set方法来追踪气-液界面边界。为了验证计算模型,将模拟结果与实验结果(采用16 mm摄像机记录充型过程)进行比对,从而证明计算模型的正确性。
Aiming at the different flowing characteristics of molten metal in the filling process of casting, the flow behavior of liquid metal containing solid particles with incompressible non-Newtonian flow and the flow characteristics of incompressible Newtonian flow in liquid metal are solved by Projection method Gas, superheated molten metal, and velocity field of molten metal containing solid particles, the Level set method is used to track the gas-liquid interface boundary. In order to validate the computational model, the simulation results are compared with the experimental results (16mm camera recording filling process) to prove the correctness of the calculation model.