基于CFD的入口节流型滑阀稳态液动力研究

发布时间：2018-03-01 17:31

本文关键词： 滑阀液动力变化规律 CFD　出处：《机床与液压》2017年13期 　论文类型：期刊论文

【摘要】：利用计算流体力学(CFD)方法,针对入口节流出口无节流的滑阀阀内流动方式,进行了液动力特性研究。给出了网格细分的规则,以及根据流场计算结果提取液动力的方法。计算了阀芯环形腔截面面积、环形腔长度、出口尺寸及角度、阀口开度等不同滑阀结构参数和工作条件下,入口节流出口无节流流动方式液动力的变化规律,分析了其液动力变化的内在机理。研究结果揭示了该种流动方式下液动力的复杂变化规律,为滑阀的分析和设计提供了参考。
[Abstract]:Based on the computational fluid dynamics (CFD) method, the hydrodynamic characteristics of a sliding valve with no throttling at the inlet and outlet are studied. The mesh subdivision rules are given. And the method of extracting fluid power according to the result of flow field calculation. The structure parameters and working conditions of valve core ring cavity, such as section area, ring cavity length, outlet size and angle, valve opening, etc., are calculated. The internal mechanism of the fluid dynamic change is analyzed. The research results reveal the complex variation law of the fluid power under this flow mode, which provides a reference for the analysis and design of the slide valve.
【作者单位】：哈尔滨工业大学流体控制与自动化系;车辆传动国防科技重点实验室;
【分类号】：TH137.52

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