基于湍流SST模型电解加工温度场数值仿真研究

doi:10.3901/JME.2019.17.215

机械工程学报 ›› 2019, Vol. 55 ›› Issue (17): 215-221.doi: 10.3901/JME.2019.17.215

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基于湍流SST模型电解加工温度场数值仿真研究

陈远龙¹, 周小超^1,2, 陈培譞¹, 王子权¹

1. 合肥工业大学机械工程学院合肥 230009;
2. 皖西学院机械与车辆工程学院六安 237012

收稿日期:2018-08-04 修回日期:2019-05-09 出版日期:2019-09-05 发布日期:2020-01-07
通讯作者: 陈远龙(通信作者),男,1964年出生,教授,博士研究生导师。主要研究方向电解加工工艺及装备。E-mail:chenyuanlong@hfut.edu.cn
作者简介:周小超,男,1982年出生,博士研究生。主要研究方向为电解加工工艺及装备。E-mail:39548804@qq.com
基金资助:
国家自然科学基金资助项目（51775161）。

Numerical Simulation Study on Temperature Field of ECM Based on the Turbulent SST Model

CHEN Yuanlong¹, ZHOU Xiaochao^1,2, CHEN Peixuan¹, WANG Ziquan¹

1. School of Mechanical Engineering, Hefei University of Technology, Hefei 230009;
2. School of Mechanical and Vehicle Engineering, West Anhui University, Luan 237012

Received:2018-08-04 Revised:2019-05-09 Online:2019-09-05 Published:2020-01-07

摘要/Abstract

摘要： 针对电解加工过程中电解液温度难以准确预测的问题，采用湍流SST模型求解电解液流速及Euler双流体模型求解气泡率分布，建立多场耦合仿真模型求解极间间隙中电解液的温度分布。对比湍流k-ε、SST模型以及SST耦合Euler模型计算温度分布的结果，分析了不同流量和出口压力对电解液温度分布的影响。结果表明：采用湍流SST模型计算得到的电解液温度分布比k-ε模型更接近试验结果；考虑气泡率对温度的影响，采用SST耦合Euler模型计算得到温度分布的结果更精确；出口处电解液温度随流量的增加而降低；在相同流量下，极间电解液温度随出口压力的增加而小幅上升。

关键词: 电解加工, 温度, 湍流SST模型, 气泡率

Abstract: The temperature distribution of the electrolyte in electrochemical machining gap influence the machining precision. The temperature distribution of electrolyte is solved by equations, which using the turbulence SST equation to get the flow velocity of boundary layer, the Euler two-fluid model to solve the bubble rate distribution, coupling electric field and convective heat transfer equations. The influence of different flow rate and outlet pressure on the temperature distribution of the electrolyte is analyzed by comparing the results of the k-ε model, SST turbulent and SST coupling with Euler model. The results show that the calculated temperature of the SST turbulent model is closer to the experimental results than the k-ε model. Considering the effect of bubble rate on temperature, the result of temperature distribution calculated by SST coupled Euler model is more accurate. The temperature of the electrolyte at the outlet decreases with the increase of flow. At the same flow rate, the temperature of the inter-electrode electrolyte increases slightly with the increase of outlet pressure.

Key words: ECM, temperature, turbulence SST model, bubble rate

中图分类号:

TG662

陈远龙, 周小超, 陈培譞, 王子权. 基于湍流SST模型电解加工温度场数值仿真研究[J]. 机械工程学报, 2019, 55(17): 215-221.

CHEN Yuanlong, ZHOU Xiaochao, CHEN Peixuan, WANG Ziquan. Numerical Simulation Study on Temperature Field of ECM Based on the Turbulent SST Model[J]. Journal of Mechanical Engineering, 2019, 55(17): 215-221.

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基于湍流SST模型电解加工温度场数值仿真研究

Numerical Simulation Study on Temperature Field of ECM Based on the Turbulent SST Model

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