Numerical Simulation of Liquid-Solid Two-Phase Flow Field in Discharge Gap of High-Speed Small Hole EDM Drilling

被引：16
作者：
Wang, Y. Q. [1 ]
Cao, M. R. [1 ]
Yang, S. Q. [1 ]
Li, W. H. [1 ]
机构：
[1] Taiyuan Univ Technol, Coll Mech Engn, Taiyuan 030024, Shanxi, Peoples R China
来源：
SURFACE FINISHING TECHNOLOGY AND SURFACE ENGINEERING | 2008年 / 53-54卷
关键词：
Small hole; EDM; Two-phase flow field; Material removal rate; Numerical simulation;
D O I：
10.4028/www.scientific.net/AMR.53-54.409
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The flow field characteristics have a significant effect on the machining stability in high-speed small hole EDM drilling. Thus, Lagrangian discrete phase model (DPM) has been developed to simulate the gap liquid-solid two-phase flow field. The numerical calculation is based on the standard k-epsilon turbulent model, and the SIMPLEC algorithm is used in the simulation. All the governing equations are solved by software Fluent 6.2. Through numerical simulation, the pressure distribution, the velocity distribution of the dielectric liquid, traces of debris particles, and the debris particle concentration were obtained. The flow field characteristics under different pressures and drilling depths were obtained through simulations. Finally, experiments were carried out to investigate the effects of the flush velocity at exit obtained through simulation on material removal rate (MRR).
引用
收藏
页码：409 / 414
页数：6
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