涨圈密封挤压油膜阻尼器流场与阻尼特性

崔颖; 罗乔丹; 邱凯; 黄宇熙

doi:10.13224/j.cnki.jasp.20210445

涨圈密封挤压油膜阻尼器流场与阻尼特性

doi: 10.13224/j.cnki.jasp.20210445

大连海事大学船舶与海洋工程学院，辽宁大连 116026

基金项目: 辽宁省自然科学基金指导计划（201602070）

详细信息

作者简介:
崔颖（1977-），女，副教授，博士，主要从事转子动力学与润滑力学研究。

中图分类号: V232.2
计量
- 文章访问数: 151
- HTML浏览量: 6
- PDF量: 143
- 被引次数: 0
出版历程
- 收稿日期: 2021-08-12
- 刊出日期: 2021-12-28

Flow field and damping characteristics of piston ring sealed squeeze film damper

Naval Architecture and Ocean Engineering College，Dalian Maritime University，Dalian Liaoning 116026，China

摘要

摘要: 为研究两端密封型挤压油膜阻尼器流场与阻尼特性，建立了涨圈密封挤压油膜阻尼器三维非定常流场数值仿真模型。基于Fluent软件中的Mixture多相流模型和Schnerr-Sauer空化模型数值模拟得到动态油膜压力与气相体积分数的周向分布规律。将计算得到的阻尼器油膜压力与文献中的试验数据对比，结果显示：两者具有较高的一致性。由动态油膜力导出的平均等效阻尼系数与试验采用阻抗法识别的结果相比仅有0.6%的偏差，从而验证了该数值模型与预测方法的有效性。进一步的数值计算表明增大进动半径、进动频率、涨圈密封的狭缝宽度均会使挤压油膜阻尼器流场中的空化现象加重，同时等效阻尼系数降低。
- 挤压油膜阻尼器 /
- 涨圈密封 /
- 空化模型 /
- 动态油膜压力 /
- 等效阻尼系数
Abstract: In order to study the flow field and damping characteristics of squeeze film damper sealed at both ends，a three-dimensional unsteady flow field numerical simulation model of squeeze film damper with piston ring seal was established.The circumferential oil film pressure distribution at different times was calculated based on the Mixture multiphase flow model and Schnerr-Sauer cavitation model in Fluent software，and compared with the experimental data in literature.The results showed that both were in good agreement.The average equivalent damping coefficient derived from the dynamic oil film force had only a deviation of 0.6% compared with the results identified by the impedance method，which verified the effectiveness of the numerical model.Further numerical calculations demonstrated that increasing the whirl amplitude，whirl frequency and the width of piston ring gap can aggravate the cavitation phenomenon in the flow field of the squeeze film damper and reduce the equivalent damping coefficient.
- squeeze film damper /
- piston ring seal /
- cavitation model /
- dynamic oil film pressure /
- equivalent damping coefficient

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参考文献(18)

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