Abstract

In this study, a comprehensive thermoelastohydrodynamic model considering turbulence and cavitation is developed. After comparing the Reynolds-Rayleigh-Plesset and Elrod and Adams models, the Elrod and Adams model is adopted to consider cavitation effects. To validate the developed model, a series of novel two-phase flow or mixed bubble experiments is designed by extracting the characteristics of actual operating conditions. Experiments are performed on a high-speed test rig. The oil film pressure and pad surface temperature of a loaded pad under various preset gas volume fractions are measured. The experimental and simulation results show reasonable agreement, and the developed model can successfully predict the bearing performance under starved conditions.

摘要

在这项研究中，开发了一个综合考虑湍流和空化的热弹性流体力学模型。在比较了 Reynolds-Rayleigh-Plesset 和 Elrod 和 Adams 模型后，采用 Elrod 和 Adams 模型来考虑空化效应。为了验证开发的模型，通过提取实际操作条件的特征，设计了一系列新颖的两相流或混合气泡实验。实验在高速试验台上进行。测量在各种预设气体体积分数下装载垫的油膜压力和垫表面温度。实验和仿真结果显示出合理的一致性，开发的模型可以成功预测饥饿条件下的轴承性能。