基于紊流状态的阻尼阀缝隙节流解析计算  

ANALYSIS OF APERTURE THROTTLE OF DAMPING VALVE BASED ON TURBULENCE

作　　者：陈轶杰[1] 郑冠慧[1] 郭建娟[1] 韩小玲[1] 冯栋梁[1] 

机构地区：[1]中国北方车辆研究所底盘部件技术部,北京100072

出　　处：《力学与实践》2013年第2期35-39,共5页Mechanics in Engineering

基　　金：北京市科技新星计划资助项目(2010B090)

摘　　要：提出了一种基于紊流状态的缝隙节流解析计算方法.运用边界层理论给出紊流状态下流体的三层速度分布表达式,通过积分定理推导出平行平板的缝隙流量解析式,与CFD软件数值解对比偏差很小,验证了方程的正确性.以此为基础根据阻尼阀的结构特点又推导出同心环形缝隙的紊流流量公式,并分析不同物性参数对缝隙压差和流量的影响规律,填补了工程设计中没有紊流状态下缝隙节流解析式的空白,为提高阻尼阀的设计精度奠定了基础.An analysis method of the aperture throttle based on turbulence state is presented in this paper. Three-layer velocity distribution expressions of the fluent in the turbulence state are obtained based on the boundary layer theory. The aperture flow equation for parallel-plates is deduced using the integration theorem and is verified by the comparison with the numerical solution of the CFD. The turbulence equations of the concentric annular aperture are deduced based on this equation, and the influences of different physical parameters on the aperture pressure difference and the flow are analyzed, which can serve as the aperture throttle equation in the turbulence state for applications in engineer designs and for the improvement of the design accuracy of the throttle valve.

关 键 词：阻尼阀 缝隙节流 紊流 平行平板 

分 类 号：TB123[理学—工程力学]