Transient thermohydrodynamic of turbocharger thrust bearings with circumferential V-grooves
DOI:
https://doi.org/10.15282/ijame.23.1.2026.1.0999Keywords:
Thermo-hydrodynamic, Thrust bearing, V-groove, Turbocharger, Speed-upAbstract
The primary objective of this paper is to numerically analyze the effect of circumferential V-grooves on the thermohydrodynamic performance of turbocharger thrust bearings, with a focus on lubricant temperature distribution and variation. To investigate the relationship between shaft speed and lubricant temperature, a thermohydrodynamic lubrication model was employed to obtain numerical results. The numerical methodology utilizes the finite difference method coupled with the Newton-Raphson scheme to solve the nonlinear modified Reynolds and energy equations concurrently. To ensure accuracy, steady-state numerical predictions of pressure and temperature distributions were validated against existing research. Subsequently, the numerical findings, focusing on oil pressure, friction, and oil temperature under varying shaft speeds, are thoroughly discussed. The numerical findings indicate that the implementation of grooved thrust bearings with a 5 mm clearance reduces the average lubricant temperature in the contact area by 14% at maximum operating speeds, while maintaining friction levels comparable to those of ungrooved counterparts. However, an excessive increase in groove width and depth adversely affects the bearing's load-carrying capacity and results in higher peak temperatures at the bearing plate edge, especially at widths and depths greater than 30 mm.
References
[1] B. J. Hamrock, S. R. Schmid, and B. O. Jacobson. Fundamentals of Fluid Film Lubrication, 2nd ed. CRC Press, 2004.
[2] A. Boretti, “Super turbocharging the direct injection diesel engine,” Nonlinear Engineering, vol. 7, no. 1, pp. 17-27, 2018.
[3] F.A. Najar, G.A. Harmain, “Numerical investigation of pressure profile in hydrodynamic lubrication thrust bearing,” International Scholarly Research Notices, vol. 2014, p. 157615, 2014
[4] A.N. Farooq, G.A. Harmain, “Performance characteristic in hydrodynamic water cooled thrust bearings,” Jurnal Tribologi, vol. 10, pp. 28-47, 2016.
[5] K. Katsaros P. Nikolakopoulos, “On the tilting‐pad thrust bearings hydrodynamic lubrication under combined numerical and machine learning techniques,” Lubrication Science, vol. 33, no. 3, pp. 153-170, 2021.
[6] E. K. Elsayed, H. Sayed, T. A. El-Sayed, “Analysis of second-order thrust bearing coefficients considering misalignment effect,” Journal of Vibration Engineering & Technologies, vol. 12, pp. 1957–1977, 2024.
[7] S. Gao, Y. Shang, Q. Gao, L. Lu, M. Zhu, Y. Sun, et al., “CFD-based investigation on effects of orifice length–diameter ratio for the design of hydrostatic thrust bearings,” Applied Sciences, vol.11, p. 959, 2021.
[8] K. Pu, F. Yuan, P. Du, B. Huang, D. Fei, “Study on influence of pad surface defects on lubrication characteristics of thrust bearing,” Annals of Nuclear Energy, vol. 203, p. 110492, 2024.
[9] J.P. Shao, G.D. Liu, X. Yu, “Simulation and experiment on pressure field characteristics of hydrostatic hydrodynamic hybrid thrust bearings,” Industrial Lubrication and Tribology, vol. 71, No. 1, pp. 102-108, 2019.
[10] I. Syafaat, A. Nugroho, M. Sodikin, A. A. Hida, R.D. Ratnani, B. Setiyana, et al., “A 3D design of the hydrodynamic pocketed thrust bearing with slip engineered for eliminating cavitation,” Results in Engineering, vol. 24, p. 24, 2024.
[11] I. Syafaat, R.A. Ababil, R.C. Gunawan, M. Tauviqirrahman, M. Muchammad, E. Yohana, et al., “Study of slip and cavitation condition in the open pocket hydrodynamic thrust bearing,” Jurnal Tribologi, vol. 37, pp. 58-75, 2023.
[12] U.P. Singh, P. Sinha, M. Kumar, “Analysis of hydrostatic rough thrust bearing lubricated with Rabinowitsch fluid considering fluid inertia in supply region,” Proceedings of the Institution of Mechanical Engineers, Part J, vol. 235, no. 2, pp. 386-395, 2020.
[13] W. Ouyang, Z. Yan, X. Zhou, B. Luo, B. Wang, and J. Huang, “A thermal hydrodynamic model for emulsified oil-lubricated tilting-pad thrust bearings,” Lubricants, vol. 11, no. 12, pp. 529, 2023.
[14] H. Feng, S. Jiang, A. Ji, “Investigations of the static and dynamic characteristics of water-lubricated hydrodynamic journal bearing considering turbulent, thermohydrodynamic and misaligned effects,” Tribology International, vol. 130, pp. 245-260, 2019.
[15] I. Chatzisavvas, A. Boyaci, A. Lehn, M. Mahner, B. Schweizer, P. Koutsovasilis, “On the influence of thrust bearings on the nonlinear rotor vibrations of turbochargers,” ASME Turbo Expo 2016: Turbomachinery Technical Conference and Exposition, Seoul, South Korea, pp. 1-10, 2016.
[16] I. Chatzisavvas, A. Boyaci, P. Koutsovasilis, B. Schweizer, “Influence of hydrodynamic thrust bearings on the nonlinear oscillations of high-speed rotors,” Journal of Sound and Vibration, vol. 380, pp. 224-241, 2016.
[17] R. Wu, B. Duan, F. Liu, H. Wu, Y. Cheng, X. Luo, “Design of a hydro-dynamically levitated centrifugal micro-pump for the active liquid cooling system,” 2017 18th International Conference on Electronic Packaging Technology, Harbin, China, pp. 402-406, 2017.
[18] B. Yang, S. Feng, J. Tian, L. Yu, “Theoretical and numerical analysis on the load capacity of hydrodynamic thrust bearings with fourier series decomposition,” 2019 IEEE International Conference on Mechatronics and Automation, Tianjin, China, pp. 2363-2368, 2019.
[19] B. Hoepke, T. Uhlmann, S. Pischinger, B. Lüddecke, D. Filsinger, “Analysis of thrust bearing impact on friction losses in automotive turbochargers,” Journal of Engineering for Gas Turbines and Power, vol. 137, no. 8, p. 8, 2015.
[20] L. Wang, R. Zou, J. Duan, M. Chen, “Performance analysis of tilting pad thrust bearing incorporating the surface roughness, texture, and turbulence effect,” Proceedings of the Institution of Mechanical Engineers, Part J, vol.238, no. 4, pp.390-398, 2023.
[21] X. H. Zhang, K.R. Li, H. Yan, L.W. Zheng, C.L. Ke, B. Dong, et al., “Experimental study of different structural parameters on gas lubricated spiral groove thrust bearing for cryogenic turbo expander,” IOP Conference Series: Materials Science and Engineering, vol. 1240, p. 8, 2022.
[22] X. Lin, R. Wang, S. Zhang, S. Jiang, “Study on dynamic characteristics for high-speed water-lubricated spiral groove thrust bearing considering cavitating effect,” Tribology International, vol. 143, p. 106022, 2020.
[23] X. Lin, S. Wang, S. Jiang, S. Zhang, “Dynamic characteristics of high-speed water-lubricated spiral groove thrust bearing based on turbulent cavitating flow lubrication model,” Chinese Journal of Mechanical Engineering, vol. 35, no. 13, p. 21, 2022.
[24] C. Xiong, B. Xu, H. Yu, Z. Huang, Z. Chen, “A thermo-elastic-hydrodynamic model for air foil thrust bearings considering thermal seizure and failure analyses,” Tribology International, vol. 183, p. 108373,2023.
[25] Q. Gao, W. Sun, J. Zhang, “Thermo-elasto-hydrodynamic analysis of a specific multi-layer gas foil thrust bearing under thermal-fluid–solid coupling,” Chinese Journal of Aeronautics, vol. 36, no. 12, pp. 231-246, 2023.
[26] B. Hu, A. Hou, R. Deng, R. Wang, Z. Wu, Q. Ni, et al., “Numerical investigation of bump foil configurations effect on gas foil thrust bearing performance based on a thermos-elastic-hydrodynamic model,” Lubricants, vol. 11, no. 10,p. 417, 2023.
[27] W.F. Chong, C.T. Lee, M.B. Lee, “Simulating thermos-hydrodynamic lubrication of turbocharger journal bearing,” Jurnal Tribologi, vol. 30, pp. 13-23, 2021.
[28] J. Dong, H. Wen, J. Zhu, J. Guo, C. Zong, “Analysis of thermo-hydrodynamic lubrication of three-lobe semi-floating ring bearing considering temperature–Viscosity effect and static pressure flow,” Lubricants, vol. 12, no. 4, p. 140, 2024.
[29] J.A. Bhat, G.A. Harmain, M.F. Wani, R. Sehgal, F.A. Najar, “Performance enhancement of hydrodynamic thrust bearings: Investigating cooling strategies, deep recesses, and textured surfaces,” Tribology International, vol. 211, p. 110877, 2025.
[30] K. Boonlong, P.Jeenkour, “Experimental Study on Oil Pressures of Hydrodynamic Lubrication in Thrust Bearing Considering Circumferential V-Grooved Pad,” International Journal of Mechanical Engineering and Robotics Research, vol. 9, no. 3, pp. 453-458, 2020.
[31] I. Chatzisavvas, “Efficient thermohydrodynamic radial and thrust bearing modeling for transient rotor dimulations,” Ph.D. dissertation, Technische Universität Darmstadt, Darmstadt, Germany, 2018.
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