3-D Flow Field of Cathode Design for NC Precision Electrochemical Machining Integer Impeller Based on CFD

Rui Wu ； Dan-Wen Zhang ； Juan Sun

《Research Journal of Applied Sciences, Engineering and Technology》 3卷9期 (2011/09) Pp. 1007-1013

並列摘要

In order to achieve high efficiency and low cost cathode designing, improve stability of process in NC precision electrochemical machining of integer impeller, a method of applying Computational Fluid Dynamics (CFD) to aid designing flow field structure of cathode and parameters for NC-ECM has been proposed in this study. The designing of flow field is the key point in cathode design and a suitable flow field design guarantees the process stability in electrochemical machining. A numerical model of the three-dimension flow field was built according to the geometrical model of interelectrode gap and cathode outline. Then the numerical simulation of 3-D flow field was performed by using the standard k-ε, turbulence model when the turbulence state in electrochemical machining had been determined. The effect of cathode's structure and initial electrolyte pressure on the electrolyte flow field was analyzed according to the results of numerical simulation. A series of results similar to the actual experimental results are obtained. The method deduced in this paper could be used to achieve high efficiency and low cost cathode design, select of initial electrolyte pressure, and consequently a lot of ＂trial and error＂ cycles will be deduced.

並列關鍵字

Computational fluid dynamics ； electrochemical machining ； numerical control ； simulation ； 3-D flow field designing