Multi-physics Simulation of Heat Transfer in Pulse Electrochemical Machining (PECM) Process

International Conference on Manufacturing Technology, Materials and Chemical Engineering

材料科学;化学工业

Fang, M.^1 ; Sun, T.S.^1 ; Su, Y.S.^1 ; Chen, Y.L.^2

School of Mechanical and Automotive Engineering, Anhui Polytechnic University, Wuhu

241000, China^1

School of Mechanical Engineering, Hefei University of Technology, Hefei

230009, China^2

关键词: Electrode temperature;    Electrolyte flows;    Multi-physics modeling;    Multiphysics simulations;    Pulse electrochemical machining;    Quasi-steady state;    Reynolds Averaged Navier-Stokes Equations;    Temperature evolution;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/592/1/012079/pdf
DOI  :  10.1088/1757-899X/592/1/012079

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

A multi-physics model is presented for numerical simulation of temperature evolution during quasi steady state (QSS) in pulse electrochemical machining (PECM) process. A fluid model consisting of wall-model and Reynolds-averaged Navier-Stokes equations is used for solving low-Re electrolyte flow near the wall and turbulent flow of electrolyte in the middle channel. A method that the boundary conditions and bulk sources are averaged in time is introduced to make the time-steps not dictated by the time scale of the pulses and SS calculations cheap. The influence of reaction heat sources, joule heat source and inlet flow rate on temperature evolution has been investigated. Simulation results indicate that the influence of reaction heat source on electrode temperature is greater than the eletrolyte and most of the joule heat is carried away by the electrolyte flow.