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首页> 外文期刊>Mechanics & Industry >Dynamic characteristics of water-lubricated journal bearings Part 1: Full 3D transient hydrodynamic force models using structured mesh movement algorithm
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Dynamic characteristics of water-lubricated journal bearings Part 1: Full 3D transient hydrodynamic force models using structured mesh movement algorithm

机译：水润滑轴颈轴承的动态特性第1部分：使用结构网格运动算法的全3D瞬态流体动力学力模型

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摘要

The increasing ecological awareness and stringent requirements for environmental protection have led to the development of water lubricated journal bearings. For the investigation of water-lubricated journal bearings, a new structured mesh movement algorithm for the CFD model is developed and based on this method, the nonlinear transient hydrodynamic force model is established. Then, with consideration of velocity perturbation, a method to determine dynamic coefficients and linear hydrodynamic forces is promoted. After validation of static equilibrium position and stiffness coefficients, a comparative linear and nonlinear hydrodynamic force analysis of multiple grooves water-lubricated journal bearings (MGWJBs) is conducted. The calculation results indicate that the structured mesh movement algorithm is suitable for the dynamic characteristics investigation of water-lubricated journal bearings. And the comparative study shows that there is a considerable difference between the linear and nonlinear hydrodynamic forces of MGWJBs. Further investigation should be carried to evaluate the dynamic responses of rotor supported by MGWJBs under difference force models.
机译：对环境保护的生态意识和严格要求的增加导致了水润滑的轴颈轴承的发展。对于水润滑轴颈轴承的研究，开发了一种新的结构化网格运动算法，并基于该方法，建立了非线性瞬态流体动力模型。然后，考虑到速度扰动，促进了一种确定动态系数和线性流体动力力的方法。在验证静态平衡位置和刚度系数之后，进行多个凹槽水润滑轴颈轴承（MGWJBS）的比较线性和非线性流体动力学分析。计算结果表明，结构化网格运动算法适用于水润滑轴颈轴承的动态特性研究。并且比较研究表明，MgWJB的线性和非线性流体动力学力之间存在相当大的差异。应携带进一步的研究来评估MGWJBS在差分模型下支撑的转子的动态响应。

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