This paper explains the numerical techniques required to model mould filling in high pressure die casting. Meshless methods can follow the behaviour of complex fluid flows making it an ideal numerical procedure for simulating the behaviour of molten metal inside the die cavities. In recent years, the advent of meshfree methods has led to the opening of new avenues in numerical computational techniques to follow the physical behaviour of fluid flow. As a result, particle based methods have emerged as a viable alternative for modelling in high pressure die casting. This paper discusses the numerical techniques used for the Corrected Smooth Particle Hydrodynamics (CSPH) method used to simulate molten metal flow in high pressure die casting cavity. CSPH is a Lagrangian based method implying the physical measurements of the flow are localised on a set of particles, which are free to move. This allows the simulation of complex free surfaces, including fragmentation. Finally, some numerical examples are given to demonstrate the validity of the method in high pressure die casting.
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