Analysis of oil film pressure characteristics of journal bearing based on the cell-vertex finite volume method

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Journal of Vibration and Shock ›› 2019, Vol. 38 ›› Issue (17) : 191-196.

YANG Guodong1, CAO Yipeng1, MING Pingjian1, ZHANG Wenping1, LI Liaoyuan2

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Abstract

In order to apply the unstructured grid technique to analyze oil film pressure in journal bearings, the cell-vertex finite volume method (CVFVM) was proposed here to solve Reynolds equations.The shape function derivative was used to calculate pressure gradient, the multi-network method was used to solve equation set, and obtain a journal bearing’s oil film pressure distribution.Through comparison and analysis of corresponding examples, the applicability, accuracy and adaptability to the unstructured grid of CVFVM were verified, and the computing time for different grid types was compared.Finally, this proposed method was used to solve the oil film pressure distribution of an internal combustion engine’s main bearing.The results showed that increase in eccentricity can cause oil film pressure to gradually rise,while increase in inclination angle can obviously affect oil film pressure distribution.

Key words

cell- vertex finite volume method / journal bearing / oil film pressure / unstructured grids

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YANG Guodong1, CAO Yipeng1, MING Pingjian1, ZHANG Wenping1, LI Liaoyuan2. Analysis of oil film pressure characteristics of journal bearing based on the cell-vertex finite volume method[J]. Journal of Vibration and Shock, 2019, 38(17): 191-196

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