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Dynamic Simulation of Fusion Process and Analysis of Flow Field

Level set/ghost method for weldlines in the filling stage of injection molding is introduced in this article. The algorithm is based on non-isothermal, incompressible, generalized Hele-Shaw flow of a viscous fluid. The physical controlling equation systems are numerically simulated by the general finite difference scheme. Level set/ghost method captures the location and shape of the weldlines accurately and efficiently, the controlling equations of which are discretized by the fifth order weighted essentially non-oscillatory (WENO) scheme in space and by the total variation differencing Runge-Kutta (TVD-RK) method in time. As a result, the fusion process of weldlines is simulated accurately and the analysis of flow field is given correctly. Examples verify the proposed methodology.