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

doi:10.3901/JME.2019.17.215

Abstract

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

CLC Number:

TG662

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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