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首页> 外文期刊>International journal of numerical methods for heat & fluid flow >Transient numerical investigation of a large-scale hydro-pneumatic suspension considering variations in check valve parameters and operational conditions
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Transient numerical investigation of a large-scale hydro-pneumatic suspension considering variations in check valve parameters and operational conditions

机译：考虑止回阀参数和操作条件的变化，大规模水气动悬架的瞬态数值研究

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Purpose - The purpose of this paper is to develop a numerical model used for calculating the nonlinearities of large-scale hydro-pneumatic suspension (HPS) and investigating the effects of variations in flow path and operational parameter on suspension damping response. Design/methodology/approach - To parameterization nonlinearities of the suspension, the author developed a two-phase flow model of a large-scale HPS based on computational fluid dynamics and volume of fluid method. Considerable effort was made to verify the nonlinearities by field measurements carried out on an off-highway mining dump truck. The investigation of effects of variations in flow path and operational parameter on damping characteristics highlights the necessity of the numerical simulation. Findings - The two-phase flow model can represent the gas-oil interaction and simulate the suspension operational movement conveniently. Transient numerical simulation results can be used to model the nonlinearities of large-scale HPS accurately. A new phenomenon was discovered that the pressure in rebound chamber presents reduction trend during compression stroke in special cases. It has never been reported before. Originality/value - Developed a two-phase flow model of a large-scale HPS, which can manage the gas-oil interaction and capture the complex flow field structure in it. The paper is the first study to model the nonlinearities of a large-scale HPS used in off-highway mining dump truck through transient numerical simulation. Compared with previous researches, such a research not only gives new insight and thorough understanding into the suspension internal fluid structure but also can give good guiding opinions to the optimal design of HPS.
机译：目的 - 本文的目的是开发一种用于计算大规模水气动悬架（HPS）的非线性的数值模型，并研究流动路径变化和操作参数对悬架阻尼响应的影响。设计/方法/方法 - 对于悬架的参数化非线性，作者基于计算流体动力学和流体方法的体积开发了大型HPS的两相流模型。通过在非公路挖掘卡车上进行的现场测量来验证非线性的大量努力。流动路径变化和操作参数对阻尼特性的影响的研究突出了数值模拟的必要性。结果 - 两相流模型可以表示气体油相互作用，方便地模拟悬架操作运动。瞬态数值模拟结果可用于精确模拟大规模HP的非线性。发现了一种新的现象，即反弹室的压力在特殊情况下压缩中风期间的减少趋势。它以前从未报道过。原创性/值 - 开发了一种大型HPS的两相流模型，可以管理气体 - 油相互作用并捕获其中的复杂流场结构。本文是第一次通过瞬态数值模拟模拟非公路挖掘卡车中使用的大型HPS的非线性的研究。与以前的研究相比，这种研究不仅为悬浮内部流体结构提供了新的洞察和彻底的理解，还可以为HPS的最佳设计提供良好的指导意见。

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