Analysis of the Cavitation in the Jet Flow Field of the V-Type Valve Orifice

Abstract:

Valve orifice is the common place that the cavitation easily occurs in the hydraulic systems. This paper introduces a criteria to estimate the inception of the cavitation of the V-type valve orifice with the stress state. Based on this criteria, a cavitation model which considers the dynamics of the cavity and incompressible gas is proposed to analyze the pressure, stress and the cavitation distribution of the phase in the V-type orifice. The distributions of the cavitation along the axis and the cross section are analyzed. The simulation results show that the cavitation is easily occurred in the downstream just after the orifice and the bubbles are mostly gathered in the top of the cross section which is vertical to the axis of the flow field. The simulation results is reasonable according to the facts. Accordingly, the cavitation of the V-type orifice is predicted reasonably. The research and results of this paper are useful for the design of the hydraulic valves.

• Periodical: Applied Mechanics and Materials (Volume 779)
• Pages: 55-61
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.779.55
• Online since: July 2015
• Authors: Hao Ling Ren, Tian Liang Lin*, Cheng Miao, Zhong Shen Li, Sheng Jie Fu
• Keywords: Cavitation, Cavitation Model, Flow Field, Fluent

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