基于Realizable k-ε模型的叶盘通道电解加工多场耦合分析

doi:10.7527/S1000-6893.2021.25670

Abstract

Abstract: Tunnel ECM is a key process that affects the machining accuracy of blisk ECM of which the forming model is difficult to establish. In this paper, a two-phase flow model based on Realizable k-ε model is established, and a multi-physical field coupling model is built based on the parameter relationship of tunnel ECM. The parameter distribution of temperature, hydrogen volume fraction and electrolyte conductivity in the process and their influence on the surface quality were analyzed by simulation, which shows the vortex region in the side gap increases hydrogen volume and electrolyte temperature. This phenomenon affects the surface quality, decreases the material removal rate, and is verified by the experiments. The balance gaps obtained by simulation and experiment are 0.33 mm and 0.26 mm. Thus the relative error of simulation (27%) is much lower than that of theoretical calculation (73%). Therefore, the model is consistent with the forming process and reflects the influence of machining parameters on the workpiece forming of blisk tunnel ECM.

Key words: ECM, tunnel, multi-physical field coupling simulation, balance gap, machining quality

CLC Number:

V261.5
TG662

ZHANG Juchen, LI Shicheng, LIU Yang, LI Xinglin. Multi-physical field analysis of tunnel ECM employed Realizable k-ε model[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2022, 43(4): 525670-525670.

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Multi-physical field analysis of tunnel ECM employed Realizable k-ε model

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