液流旋启式止回阀关闭动态特性数值模拟

doi:10.3969/j.issn.1674-8530.2013.04.012

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Abstract Regarding the water hammer phenomenon in closing swing check valve, by applying computational fluid dynamics(CFD) method, a motion equation of valve clack and the 2D geometric model were built; with the control equations composed of continuity equation, Reynolds average N-S equations and the k-ε turbulence model based on the theory of isotropic eddy viscosity, by using Fluentbased calculation methods and physical models, dynamic mesh and UDF in closing two kinds of swing check valve, twodimensional numerical simulation of the internal unsteady flow was performed. From the simulation, the pressure field, velocity vector, pressure curve and velocity curve of the internal unsteady flow were obtained. The results show that, in closing, the original model fluctuated; while the modified model fluctuated slightly, reducing the possibility of sudden changes; the internal flow field became more stable and the flow capacity was improved, the impact of the fluid on valve clack and local energy loss were decreased. The research can be an important reference for swing check valve design and helpful in optimizing valve design.

Key words： swing check valve closing process dynamic mesh water hammer phenomena numerical simulation

Received: 31 October 2012 Published: 30 April 2013

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	LI Shu-Xun
	HOU Ying-Zhe
	LI Lian-Cui- Zhou-Shi-Hao

Cite this article:

LI Shu-Xun,HOU Ying-Zhe,LI Lian-Cui- Zhou-Shi-Hao. Numerical simulation on dynamic characteristic of closing process of flow swing check valve[J]. Journal of Drainage and Irrigation Machinery Engin, 2013, 31(4): 335-339.

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http://zzs.ujs.edu.cn/pgjx/EN/10.3969/j.issn.1674-8530.2013.04.012 OR http://zzs.ujs.edu.cn/pgjx/EN/Y2013/V31/I4/335

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