PL EN
CFD analysis of nano-lubricated journal bearing considering variable viscosity and elasticity effects
 
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University of Babylon, College of Engineering, Mechanical Engineering Department, Babylon, Iraq
AUTOR DO KORESPONDENCJI
Zainab Hafiz Kadhim   

University of Babylon, College of Engineering, Mechanical Engineering Department, Babylon, Iraq
Data nadesłania: 14-11-2021
Data ostatniej rewizji: 28-12-2021
Data akceptacji: 03-01-2022
Data publikacji online: 12-01-2022
 
Diagnostyka 2022;23(1):2022101
 
SŁOWA KLUCZOWE
DZIEDZINY
STRESZCZENIE
The main Objective of the present work is to study the behavior of nano lubricated journal bearing considering elasticity and variable viscosity effects. A mathematical model for a journal bearing was employed using three-dimensional computational fluid dynamics. The study was implemented for a journal bearing with laminar flow and smooth surfaces lubricated with pure oil as well as lubricants containing different concentrations of Al2O3 Nano-particles. The dependence of the oil viscosity on the temperature was considered by using modified Krieger Dougherty model. Pressure, temperature and elastic deformation in addition to the bearing load carrying capacity of the bearing working under different eccentricity ratios (0.1-0.6) have been studied. The mathematical model was confirmed by comparing the results of the pressure and temperature distributions obtained in the current work with those obtained by Ferron et al.(1983) for a bearing lubricated with pure oil. Also, the pressure obtained for nanolubricated bearing of the present work was validated with that obtained by Solighar (2015). The results are found in a good agreement with maximum deviation not exceed 5%. The obtained results show that the oil film pressure increases by about 17.9% with slight decrease in oil film temperature and friction coefficient.
 
REFERENCJE (26)
1.
Sun J, Deng M, Fu Y, Gui V. Thermohydrodynamic lubrication analysis of misaligned plain journal bearing with rough surface. J. Tribol. 2010,132(1): 011704. https://doi.org/10.1115/1.4000....
 
2.
He Z-P, Zhang J-H, Xie W-S, Li Z-Y, Zhang G-C. Misalignment analysis of journal bearing influenced by asymmetric deflection, based on a simple stepped shaft model. Journal of Zhejiang University Science A 2012,13(9):647-664. http://dx.doi.org/10.1631/jzus....
 
3.
Li B, Sun J, Zhu S, Fu Y, Zhao X, Wang H, et al., Thermohydrodynamic lubrication analysis of misaligned journal bearing considering the axial movement of journal. Tribology International 2019;135:397-407. https://doi.org/10.1016/j.trib....
 
4.
Brito F, Miranda A, Claro JCP, Fillon MJT. Experimental comparison of the performance of a journal bearing with a single and a twin axial groove configuration. Tribology International 2012;54:1-8. https://doi.org/10.1016/j.trib....
 
5.
Zhang ZS, Yang YM, Dai D, Xie YB. Effects of thermal boundary conditions on plain journal bearing thermohydrodynamic lubrication. Publication Cover. Tribology Transactions 2013; 56(5):759-770. https://doi.org/10.1080/104020....
 
6.
Brito FP, Miranda AS, Claro JCP, Teixeira JC, Costa L, Fillon M. The role of lubricant feeding conditions on the performance improvement and friction reduction of journal bearings. Tribology International 2014;72: 65-82. http://dx.doi.org/10.1016/j.tr....
 
7.
Lambha SK, Kumar V, Verma R. Elastohydrodynamic analysis of couple stress lubricated cylindrical journal bearing. Journal of Physics: Conference Series. 2019. IOP Publishing. http://dx.doi.org/10.1088/1742....
 
8.
Zhang Y, Chen G, Wang L. Thermoelastohydrodynamic analysis of misaligned bearings with texture on journal surface under high-speed and heavy-load conditions. Chinese Journal of Aeronautics 2019;32(5):1331-1342. http://dx.doi.org/10.1016/j.cj....
 
9.
Shenoy BS, Binu KG, Pai R, Rao DS, Pai RS. Effect of nanoparticles additives on the performance of an externally adjustable fluid film bearing. Tribology International 2012;45(1):38-42. http://dx.doi.org/10.1016/j.tr....
 
10.
Binu KG, Shenoy BS, Rao DS, Pai R. Static characteristics of a fluid film bearing with TiO2 based nanolubricant using the modified Krieger–Dougherty viscosity model and couple stress model. Tribology International 2014;75:69-79. https://doi.org/10.1016/j.trib....
 
11.
Binu KG, Shenoy BS, Rao DS, Pai R. A variable viscosity approach for the evaluation of load carrying capacity of oil lubricated journal bearing with TiO2 nanoparticles as lubricant additives. Procedia Materials Science 2014;6:1051-1067. https://doi.org/10.1016/j.mspr....
 
12.
Nicoletti R. The importance of the heat capacity of lubricants with nanoparticles in the static behavior of journal bearings. J. Tribol. 2014;136(4). https://doi.org/10.1115/1.4027....
 
13.
Babu KS, Nair KP, Rajendrakumar PK. Science, and Technology, "Computational analysis of journal bearing operating under lubricant containing Al2O3 and ZnO nanoparticles. International Journal of Engineering, Science and Technology 2014;6(1):34-42. https://doi.org/10.4314/ijest.....
 
14.
Gunnuang W, Aiumpornsin C, Mongkolwongrojn M. Effect of nanoparticle additives on journal bearing lubricated with non-Newtonian Carreau fluid. in Applied Mechanics and Materials. 2015;175:137-142. https://doi.org/10.4028/www.sc....
 
15.
Solghar AA. Investigation of nanoparticle additive impacts on thermohydrodynamic characteristics of journal bearings. Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology 2015;229(10):1176-1186. https://doi.org/10.1177%2F1350....
 
16.
Li Q, Liu S-I, Pan X-H,Zheng S-Y. 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. http://dx.doi.org/10.1631/jzus....
 
17.
Liu H, Xu H, Ellison PJ, Jin Z. 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. http://dx.doi.org/10.1007/s112....
 
18.
Li Q, Yu G, Liu S, Zheng S. 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. https://doi.org/10.3901/CJME.2....
 
19.
Dhandea DY, Pande DW. Numerical analysis of hydrodynamic journal bearing lubrication using computational fluid dynamics and fluid structure interaction approach. Int. J. of Vehicle Structures & Systems 2016;8(4):224-228. http://dx.doi.org/10.4273/ijvs....
 
20.
Dhande DY, Pande DW. A two-way FSI analysis of multiphase flow in hydrodynamic journal bearing with cavitation J Braz. Soc. Mech. Sci. Eng. 2017;39(9):3399-3412. https://doi.org/10.1007/s40430....
 
21.
Chen Y, Sun Y, He Q, Feng J. Elastohydrodynamic behavior analysis of journal bearing using fluid–structure interaction considering cavitation. Arabian Journal for Science and Engineering. 2019;44(2):1305-1320. https://doi.org/10.1007/s13369....
 
22.
Kyrkou M-E, Nikolakopoulos PG. Simulation of thermo-hydrodynamic behavior of journal bearings, lubricating with commercial oils of different performance. Simulation Modelling Practice and Theory 2020;104:102128. https://doi.org/10.1016/j.simp....
 
23.
Ferron J, Frene J, Boncompain R. A Study of the thermo-hydrodynamic performance of a plain journal bearing comparison between theory and experiments. J. of Lubrication Tech.1983;105(3):422-428. https://doi.org/10.1115/1.3254....
 
24.
Dang, RK, Chauhan A, Dhami SS. Static thermal performance evaluation of elliptical journal bearings with nanolubricants. Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology 2020; https://doi.org/10.1177/135065....
 
25.
Solghar AA. Investigation of nanoparticle additive impacts on thermohydrodynamic characteristics of journal bearings. Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology 2015;229(10):1176-1186.‏ https://doi.org/10.1177%2F1350....
 
26.
Gandjalikhan Nassab SA, Moayeri MS. Three-dimensional thermohydrodynamic analysis of axially grooved journal bearings. Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology 2002;216(1):35-47. https://doi.org/10.1243%2F1350....
 
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