Analysis of Rough and Porous Journal Bearing with Considering Lubricant Slippage Effect
Keywords:
Journal Bearing, Slip Boundary Condition, Porosity, Surface Roughness, SlipAbstract
In the present study, hydrodynamic journal bearings, considering the influence of surface roughness (SR), surface porosity (SP), and slip boundary condition (SBC), have been analyzed. To perform this investigation, a modified Reynolds equation with assuming Reynoldsboundary conditions has been solved. The Tripp model, Darcy law, and Modified Navier slip length model have been used to study the effect of SR, SP, and SBC. The variation of performance parameters such as lubricant pressure and lubricant film thickness with change in external applied load is investigated. It has been observed that, as compared to conventional bearing, bearing with SR, SP, and SBC shows significant improvement in the value of peak lubricant pressure and lubricant minimum film thickness.
References
Si W, Guo Z. Enhancing the lifespan and durability of superamphiphobic surfaces for potential industrial applications: A review. Advances in Colloid and Interface Science. 2022 Dec 1;310:102797.
Zhang, B., Xu, W. (2021). Superhydrophobic, superamphiphobic and SLIPS materials as anti-corrosion and anti-biofouling barriers. New Journal of Chemistry 45, 15170-15179.
Liravi, M., Pakzad, H., Moosavi, A., Nouri-Borujerdi, A. (2020). A comprehensive review on recent advances in superhydrophobic surfaces and their applications for drag reduction. Progress in Organic Coatings 140, 105537.
Guo, M., Zhang, G., Xin, G., Huang, H., Huang, Y., Rong, Y., Wu, C. (2023). Laser direct writing of rose petal biomimetic micro-bulge structure to realize superhydrophobicity and large slip length. Colloids and Surfaces A: Physicochemical and Engineering Aspects,130972.
Lee, C., Choi, C. H., Kim, C. J. (2016). Superhydrophobic drag reduction in laminar flows: a critical review. Experiments in Fluids 57(12), 1-20.
Park, H., Choi, C. H., Kim, C. J. (2021). Superhydrophobic drag reduction in turbulent flows: a critical review. Experiments in Fluids 62(11), 1-29.
Basu, B. J., Hariprakash, V., Aruna, S. T., Lakshmi, R. V., Manasa, J., & Shruthi, B. S. (2010). Effect of microstructure and surface roughness on the wettability of superhydrophobic sol–gel nanocomposite coatings. Journal of sol-gel science and technology, 56, 278-286.
Shang, Q., & Zhou, Y. (2016). Fabrication of transparent superhydrophobic porous silica coating for self-cleaning and anti-fogging. Ceramics International, 42(7), 8706-8712.
Senatore, A., Rao, T.V.V.L.N. (2018). Partial slip texture slider and journal bearing lubricated with Newtonian fluids: a review. Journal of Tribology 140(4), 040801.
Arif M, Shukla DK, Kango S, Sharma N. Implication of surface texture and slip on hydrodynamic fluid film bearings: a comprehensive survey. Tribology Online. 2020 Aug 31;15(4):265-82.
Sun BW, Chen L, Guo L, Wang W, Wong PL. Experimental evidence on the enhancement of bearing load capacity by localised boundary slip effect. Tribology Letters. 2021 Jun;69:1-8.
Zhang H, Liu Y, Dai S, Li F, Dong G. Optimization of boundary slip region on bearing sliders to improve tribological performance. Tribology International. 2022 Apr 1;168:107446.
Spikes HA. The half-wetted bearing. Part 1: extended Reynolds equation. Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology. 2003 Jan 1;217(1):1-4.
Fortier AE, Salant RF. Numerical analysis of a journal bearing with a heterogeneous slip/no-slip surface.
Aurelian, F., Patrick, M., & Mohamed, H. (2011). Wall slip effects in (elasto) hydrodynamic journal bearings. Tribology International, 44(7-8), 868-877.
Rao, T. V. V. L. N. (2009). Theoretical prediction of journal bearing stability characteristics based on the extent of the slip region on the bearing surface. Tribology transactions, 52(6), 750-758.
Bhattacharya, A., Dutt, J. K., Pandey, R.K. (2017). Influence of hydrodynamic journal bearings with multiple slip zones onrotordynamic behavior. Journal of Tribology 139(6).
Lv, F., Rao, Z., Ta, N., & Jiao, C. (2017). Mixed-lubrication analysis of thin polymer film overplayed metallic marine stern bearing considering wall slip and journal misalignment. Tribology International, 109, 390-397.
Cui, S., Zhang, C., Fillon, M., Gu, L. (2020). Optimization performance of plain journal bearings with partial wall slip. Tribology International 145, 106137.
Li, W. L., Huang, Z. H., Lin, C. S., Chen, T. H., Shyu, S.H. (2019). On the linear stability analysis of journal bearings–Consideration of coupled effects of anisotropic slip and surface roughness. Tribology International 137, 254-266.
Dowson, D. (1962). A generalized Reynolds equation for fluid-film lubrication. International Journal of Mechanical Sciences, 4(2), 159-170.
Choo, J. H., Glovnea, R. P., Forrest, A. K., and Spikes, H. A. (2007). A Low Friction Bearing Based on Liquid Slip at the Wall. ASME. J, 129(3): 611–620.
Kalavathi, G. K., Dinesh, P. A., & Gururajan, K. (2016). Influence of roughness on porous finite journal bearing with heterogeneous slip/no-slip surface. Tribology International, 102, 174-181.
Li, W. L., Weng, C. I., & Lue, J. I. (1996). Surface roughness effects in journal bearings with non-Newtonian lubricants. Tribology transactions, 39(4), 819-826.
Patir, N., & Cheng, H. S. (1978). An average flow model for determining effects of three-dimensional roughness on partial hydrodynamic lubrication.
Jiin-Yuh, J., & Chong-Ching, C. (1988). Adiabatic analysis of finite width journal bearings with non-Newtonian lubricants. Wear, 122(1), 63-75.
