Application of the MAC Method in Casting Filling Simulation 在线阅读 下载PDF
Author of the article:HUANG Weiming;TANG Yulong;NING Linxiang;WU Di;LIAO Dunming
Author's Workplace：Zhejiang Beifang Machinery Manufacturing Co.,Ltd.,Jiaxing 314100,China;State Key Laboratory of Materials Processing and Die&Mould Technology,School of Materials Science and Engineering,Huazhong University of Science and Technology,Wuhan 430074,China;Zhejiang Ouyeda Machinery Manufacturing Co.,Ltd.,Huzhou 314200,China
Key Words：marker-and-cell semi-Lagrangian method casting filling process fluid simulation
Abstract：
Marker-and-cell based semi-Lagrangian method,which combines the advantages of Lagrangian and Eulerian perspective,is introduced to simulate the metal flow during casting filling process.This method treats fluid in terms of a vast collection of particles with some physical properties that move around,naturally bypass the unique complex free interface tracking problem in Eulerian perspective.For the interior of the fluid,the efficient Projection method is used to solve the incompressible Navier-Stokes equations.On the other hand,the diffusion equation is solved on the background grid by mapping the information carried by the particles to the grid,thus avoiding the inconvenience of field description in Lagrangian perspective.And the level set method is introduced to describe boundary.In order to study the application of this method in the casting field,two examples are given with this method and the widely used VOF method.The results show that this method can produce sharp and discontinuous fluid interfaces,which is closer to the casting process with high filling speed.
