• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>MIT Conference on Computational Fluid and Solid Mechanics >Estimation of erosion effects due to solid contaminant in hydraulic valves
【24h】

Estimation of erosion effects due to solid contaminant in hydraulic valves

机译：液压阀中固体污染物引起的侵蚀效应的估算

获取原文
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Solid contaminant is one of the major causes of component failures and system brakedowns in fluid power systems. More than 80% of severe damages can be referred back to the effects of fluid contamination. The traditional approach to the solution of this problem is the introduction of properly designed filtration elements combined with the development of filtration strategies tailored for every application need. This approach can be considered substantially passive in nature, since it allows the contaminant to be present in the fluid and provides means for its removal in order to keep either distribution or density of solid particles within prescribed limits. The passive approach, however, does not allow any dynamic estimation of the damages caused to components by fluid contamination, and the knowledge gained on the correlation of fluid contamination to component damage is mainly empirical in nature. The work presented in the paper is part of a comprehensive activity aimed at correlating solid particle erosion effects to hydraulic fluid (usually mineral oil) contamination level, as defined by existing (ISO and NAS) standards. The tool used to predict solid particles erosion is a computational fluid dynamics (CFD) solution (obtained using a commercial code) of the flow field inside a hydraulic valve, coupled with Lagrangian equation of motion solution for solid particles subject to viscous forces.
机译：固体污染物是在流体动力系统中的组件故障和系统展示的主要原因之一。超过80％的严重损害可以转回流体污染的影响。传统方法解决这个问题的解决方案是引入适当设计的过滤元素，结合各种申请需要量身定制的过滤策略。这种方法可以被认为是基本上被动的，因为它允许污染物存在于流体中，并提供其去除的装置，以便在规定的限度内保持固体颗粒的分布或密度。然而，被动方法不允许通过流体污染对组件引起的损坏的任何动态估计，并且在流体污染与组件损伤的相关性上获得的知识主要是性质的。本文提出的工作是综合活动的一部分，旨在将固体粒子侵蚀效应与液压液（通常是矿物油）污染水平相关，如现有（ISO和NAS）标准所定义。用于预测固体颗粒侵蚀的工具是液压阀内的流场的计算流体动力学（CFD）解决方案（使用商业代码获得），其与受粘性力的固体颗粒的拉格朗日方程联接。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号