Chinese Journal of Mechanical Engineering >

2022 , Vol. 35 >Issue 1: 13 - 13

DOI: https://doi.org/10.1186/s10033-021-00671-3

Mechanism and Robotics

Dynamic Characteristics of High-speed Water-Lubricated Spiral Groove Thrust Bearing Based on Turbulent Cavitating Flow Lubrication Model

  • Xiaohui Lin ,
  • Shun Wang ,
  • Shuyun Jiang ,
  • Shaowen Zhang
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  • School of Mechanical Engineering, Southeast University, Nanjing, 210000, China

收稿日期: 2020-05-23

  修回日期: 2021-03-17

  网络出版日期: 2022-06-30

基金资助

Supported by National Natural Science Foundation of China (Grant Nos. 51635004, 11472078)

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Dynamic Characteristics of High-speed Water-Lubricated Spiral Groove Thrust Bearing Based on Turbulent Cavitating Flow Lubrication Model

  • Xiaohui Lin ,
  • Shun Wang ,
  • Shuyun Jiang ,
  • Shaowen Zhang
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  • School of Mechanical Engineering, Southeast University, Nanjing, 210000, China

Received date: 2020-05-23

  Revised date: 2021-03-17

  Online published: 2022-06-30

Supported by

Supported by National Natural Science Foundation of China (Grant Nos. 51635004, 11472078)

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摘要

The water-lubricated bearings are usually the state of turbulent cavitating flow under high-speed conditions. And the distribution of cavitation bubbles and the interface effect between the two phases have not been included in previous studies on high-speed water-lubricated bearings. In order to study the influence of interface effect and cavitation bubble distribution on the dynamic characteristics of high-speed water-lubricated spiral groove thrust bearings (SGTB).A turbulent cavitating flow lubrication model based on two-phase fluid and population balance equation of bubbles was established in this paper. Stiffness and the damping coefficients of the SGTB were calculated using the perturbation pressure equations. An experimental apparatus was developed to verify the theoretical model. Simulating and experimental results show that the small-sized bubbles tend to generate in the turbulent cavitating flow when at a high rotary speed, and the bubbles mainly locate at the edges of the spiral groove. The simulating results also show that the direct stiffness coefficients are increased due to cavitation effect, and cross stiffness coefficients and damping coefficients are hardly affected by the cavitation effect. Turbulent effect on the dynamic characteristics of SGTB is much stronger than the cavitating effect

关键词： Spiral groove thrust bearings; Water lubrication; Turbulent lubrication; Cavitating flow; Dynamic characteristics

本文引用格式

Xiaohui Lin , Shun Wang , Shuyun Jiang , Shaowen Zhang . Dynamic Characteristics of High-speed Water-Lubricated Spiral Groove Thrust Bearing Based on Turbulent Cavitating Flow Lubrication Model[J]. Chinese Journal of Mechanical Engineering, 2022 , 35(1) : 13 -13 . DOI: 10.1186/s10033-021-00671-3

Abstract

The water-lubricated bearings are usually the state of turbulent cavitating flow under high-speed conditions. And the distribution of cavitation bubbles and the interface effect between the two phases have not been included in previous studies on high-speed water-lubricated bearings. In order to study the influence of interface effect and cavitation bubble distribution on the dynamic characteristics of high-speed water-lubricated spiral groove thrust bearings (SGTB).A turbulent cavitating flow lubrication model based on two-phase fluid and population balance equation of bubbles was established in this paper. Stiffness and the damping coefficients of the SGTB were calculated using the perturbation pressure equations. An experimental apparatus was developed to verify the theoretical model. Simulating and experimental results show that the small-sized bubbles tend to generate in the turbulent cavitating flow when at a high rotary speed, and the bubbles mainly locate at the edges of the spiral groove. The simulating results also show that the direct stiffness coefficients are increased due to cavitation effect, and cross stiffness coefficients and damping coefficients are hardly affected by the cavitation effect. Turbulent effect on the dynamic characteristics of SGTB is much stronger than the cavitating effect

Key words： Spiral groove thrust bearings; Water lubrication; Turbulent lubrication; Cavitating flow; Dynamic characteristics

参考文献

[1] B C Majumdar, R Pai, D J Hargreaves. Analysis of water-lubricated journal bearings with multiple axial grooves. Proc. Inst. Mech. Eng. Part J:J. Eng. Tribol., 2004, 218:135-146.
[2] Y M Zhao, C Wei, S Yuan, et al. Theoretical and experimental study of cavitation effects on the dynamic characteristic of spiral-groove rotary seals (SGRSs). Tribology Letters, 2016, 64(3):1-18.
[3] H G Elrod. A cavitation algorithm. ASME J. Lubr. Technol., 1981, 103(3):350-354.
[4] Y Song, C Gu. Development and validation of a three-dimensional computational fluid dynamics analysis for journal bearings considering cavitation and conjugate heat transfer. Journal of Engineering for Gas Turbines and Power, 2015, 137(12):122502.
[5] Y Wang, Z Yin, D Jiang, et al. Study of the lubrication performance of water-lubricated journal bearings with CFD and FSI method. Industrial Lubrication and Tribology, 2016, 68(3):341-348.
[6] E P Grando, M Priest, A T Prata. A two-phase flow approach to cavitation modelling in journal bearings. Tribology Letters, 2006, 21(3):233-244.
[7] H Liu, H Xu, P J Ellison, et al. Application of computational fluid dynamics and fluid- structure interaction method to the lubrication study of a rotor-bearing system. Tribology Letters, 2010, 38(3):325-336.
[8] J L Nikolajsen. The effect of aerated oil on the load capacity of a plain journal bearing. Tribology Transactions, 1999, 42(1):58-62.
[9] S Choi, K W Kim. Analysis of bubbly lubrication in journal bearings. JSME International Journal Series C, 2002, 45(3):802-808.
[10] Q Li, S L Liu, X H Pan, et al. A new method for studying the 3D transient flow of misaligned journal bearings in flexible rotor-bearing systems. Journal of Zhejiang University Science A, 2012, 13(4):293-310.
[11] Q Li, G Yu, S Liu, et al. Application of computational fluid dynamics and fluid structure interaction techniques for calculating the 3D transient flow of journal bearings coupled with rotor systems. Chinese Journal of Mechanical Engineering, 2012, 25(5):926-932.
[12] J Hu, W Wei, M Wu, et al. Numerical investigation of the air-oil two-phase flow inside an oil-jet lubricated ball bearing. International Journal of Heat and Mass Transfer, 2014, 68:85-93.
[13] X Zhang, Z Yin, G Gao, et al. Determination of stiffness coefficients of hydrodynamic water-lubricated plain journal bearings. Tribology International, 2015, 85:37-47.
[14] Q Li, S Zhang, L Ma, et al. Stiffness and damping coefficients for journal bearing using the 3D transient flow calculation. Journal of Mechanical Science and Technology, 2017, 31(5):2083-2091.
[15] Y Chen, Y Sun, Q He, et al. Elastohydrodynamic behavior analysis of journal bearing using fluid-structure interaction considering cavitation. Arabian Journal for Science and Engineering, 2019, 44:1305-1320.
[16] D Sun, S Y Li, C W Fei, et al. Investigation of the effect of cavitation and journal whirl on static anddynamic characteristics of journal bearing. Journal of Mechanical Science and Technology, 2019, 33(1):77-86.
[17] H Liu, H Xu, Y Zhang. The influence of sea water in oil emulsion on bearing performance. Proc. Inst. Mech. Eng. Part J:J. Eng. Tribol., 2009, 223(3):457-468.
[18] Q Y Lin, Z Y Wei, N Wang, et al. Analysis on the lubrication performances of journal bearing system using computational fluid dynamics and fluid-structure interaction considering thermal influence and cavitation. Tribology International, 2013, 64:8-15.
[19] S B Shenoy, R Pai, D Rao, et al. Elasto-hydrodynamic lubrication analysis of full 360 journal bearing using CFD and FSI techniques. World Journal of Modelling and Simulation, 2009, 5(4).
[20] X H Lin, S Y Jiang, C B Zhang. Thermohydrodynamic analysis of high speed water-lubricated spiral groove thrust bearing considering effects of cavitation, inertia and turbulence. Tribology International, 2018, 119:645-658.
[21] X H Lin, S Y Jiang, C B Zhang, et al. Thermohydrodynamic analysis of high-speed water-lubricated spiral groove thrust bearing using cavitating flow model. Journal of Tribology, 2018, 140:0517031-05170312.
[22] X H Lin, R Q Wang, S W Zhang, et al. Study of cavitation bubbles evolution for high-speed water-lubricated spiral groove thrust bearings. ASME Journal of Tribology, 2019, 141:051703-1.
[23] X H Lin, R Q Wang, S W Zhang, et al. Study on dynamic characteristics for high speed water-lubricated spiral groove thrust bearing considering cavitating effect. Tribology International, 2019, 143:106022.
[24] C W Ng, C H T Pan. A linearized turbulent lubrication theory. ASME J. Fluids Eng., 1965, 87(3):675-688.
[25] J O Hinze. Turbulence. McGraw-Hili Book Company., Inc., New York, 1959.
[26] J R Ni, G Q Wang, H W Zhang. The basic theory of solid liquid two-phase flow and its latest applications. Beijing:Science Press, 1991.
[27] L J Guo. Two-phase and multiphase flow dynamics. Xi'an:Xi'an Jiaotong University Press, 2002.
[28] J Solsvik, H A Jakobsen. Evaluation of weighted residual methods for the solution of a population balance model describing bubbly flows:The Least Squares, Galerkin, Tau, and Orthogonal Collocation Methods. Industrial & Engineering Chemistry Research, 2013, 52(45):15988-16013.
[29] M L Billet. Cavitation nuclei measurements. Proc. of the 2nd Intcrn. Symp. on Cavitation Inception, New Orleans, Louisiana, USA, 1984:33-42.
[30] S Kumar, D Ramkrishna. On the solution of population balance equations by discretization-I. A Fixed Pivot Technique. Chemical Engineering Science, 1996, 51(8):1311-1332.
[31] C A Dorao, H A Jakobsen. A least squares method for the solution of population balance problems. Computers and Chemical Engineering, 2006, 30:535-547.
[32] Z M Zhang, Y Y Zhang, Y B Xie, et al. The theory of hydrodynamic lubrication of sliding bearings. Beijing:Higher Education Press, 1986.
[33] C E Brennen. Cavitation and bubble dynamics. Oxford University Press, 1995.
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