排灌机械工程学报2013，Vol.31Issue(1)：46-49,55,5.DOI:10.3969/j.issn.1674-8530.2013.01.010
轴流式止回阀动态特性
Dynamic characteristics of axial flow check valve
摘要
Abstract
The unsteady fluid flow caused from the moving disc in an axial flow check valve was numerically simulated by means of the computational methods and flow physical models available in CFD code-Fluent.The disc regularly instantaneous movement was realized by the dynamic mesh technique and UDF (user defined function) in Fluent.The transient pressure and velocity were obtained during a period of the disc being closed by means of unstructured mesh,the standard k - e turbulence model.Those transient characteristic curves have been measured experimentally as well,and exhibit good a-greement with the predicted ones,suggesting the numerical simulation method is reliable.Moreover,such dynamic characteristic curves were calculated in the valves in various nominal diameters and external forces and their influences have been identified.Those results will play a critical role in investigation into water hammer effect in the axial flow check valve,and might be useful for check valve design in engineering projects.关键词
止回阀/动网格/用户自定义函数/动态特性/数值模拟Key words
check valve/dynamic mesh/user defined function/dynamic characteristics/numerical simulation分类
农业科技引用本文复制引用
杨国来,伍国果,刘小雄,曹文斌,许敏影..轴流式止回阀动态特性[J].排灌机械工程学报,2013,31(1):46-49,55,5.基金项目
甘肃省自然科学基金资助项目(1014RJZA023) （1014RJZA023）
