Fast Algorithm for Heating Injection Mold by Water

Abstract

This paper puts forward a fast algorithm for heating injection mold by water accordance with these problems that the computing is enormous to simulate heating injection mold and there is a limitation for velocity of hot water that it should not be too larger otherwise simulating algorithm will be failure. The method does the similarity transformation to construct similarity model whose solution is the same with the mathematics model for the problem of heating injection mold by water, and the simulation time will be reduced greatly at the precondition of keeping precision using the similarity model. The first step of similarity transformation is time similarity transforming for the fluid governing equation describing the moving of hot water in the time area, i.e., actual heating time area for mold heating is transformed to heating time area of similarity model while keeping spatial domain unchanged. Meanwhile it does the same transformation for the heat conduction governing equation in the time area, also keeping spatial domain unchanged. In this way the similarity model of the origin mathematics model for fluid-solid coupling problem of heating mold by water is obtained. Simulating the similarity model could obtain mold temperature field after heating fast. The paper shows that the fast algorithm has good application value through examples.