Numerical and experimental research of bidirectional thrust bearings used in pump-turbines
Numerical and experimental research of bidirectional thrust bearings used in pump-turbines
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DOI：
10.1177/1350650112449232
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发表时间：
2012-06
期刊：
影响因子：
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通讯作者：
B. Huang;Z. Wu;Jl Wu;Lq Wang
中科院分区：
文献类型：
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作者：
B. Huang;Z. Wu;Jl Wu;Lq Wang
建立了水泵水轮机双向推力轴承的三维热弹流体动力学模型，该模型考虑了轴瓦和转轮表面的温度-粘性效应和热弹性变形。采用有限差分法对热-水动力学模型进行求解，利用有限元软件ANSYS11.0得到垫片和转轮的热弹性变形。热力-水动力模型与ANSYS11.0之间的数据传输由接口程序自动完成。在哈尔滨电机3000吨推力轴承试验台上进行了实验室试验。将实验结果与数值计算结果进行了详细的对比，发现油膜厚度、压力和温度在总体上是一致的，这为本文建立的三维热弹流体有限差分有限元模型的有效性提供了依据。
A three-dimensional thermo-elasto-hydro-dynamic model for bidirectional thrust bearings used in pump-turbines taking into account the temperature-viscosity effect as well as thermal-elastic deformations in the pad and runner surface was set up. The finite difference method was employed to solve the thermo-hydro-dynamic model, and the thermal-elastic deformations in the pad and runner were obtained by the finite element software ANSYS11.0. The data transfer between the thermo-hydro-dynamic model and ANSYS11.0 was carried out automatically by an interface program. Laboratory test was performed on the Harbin Electric Machinery 3000 ton thrust bearing test rig. A detailed comparison between the experimental results and numerical predictions showed quite good overall agreement on the oil film thickness, pressure and temperature, which provided an evidence of validation of the three-dimensional thermo-elasto-hydro-dynamic model coupled with finite difference method and finite element method developed in this article.