Jimit R. Patel, Gunamani Deheri

DOI Number
First page
Last page


The study aims at analyzing the performance of a ferrofluid-based infinitely long rough porous slider bearing which makes use of thin film lubrication at nanoscale. The stochastic model of Christensen and Tonder has been employed to analyze the effect of surface roughness while the Neuringer-Rosensweig’s model has been adopted to study the magnetization effect. The pressure distribution in the bearing system has been obtained by solving the associated stochastically averaged Reynolds type equation. The results indicate that although the transverse roughness is supposed to affect the bearing system adversely, the situation remains fairly better in the case of thin film lubrication at nanoscale. In fact, the consideration of thin film lubrication at nanoscale results in an all round improved performance, even for lower strength of the magnetic intensity. However, the couple stress adds a little more to this positive effect.


Long Bearing, Ferrofluid, Rough Surfaces, Nanoscale, Load-carrying Capacity

Full Text:



Rosensweig. R.E., 1985, Ferrohydrodynamics, Cambridge University Press, New York.

Popa, N.C., Potencz, I., Brostean, L., Vekas, L., 1997, Some applications of inductive Transducers with

magnetic fluids, Sensors and Actuators A, 59, pp. 197-200.

Nada, G.S., Osman, T.A., 2007, Static performance of finite hydrodynamic journal bearings lubricated

by magnetic fluids with couple stresses, Tribol. Lett., 27, pp. 261-268.

Urreta, H., Leicht, Z., Sanchez, A., Agirre, A., Kuzhir, P., Magnac, G., 2009, Hydrodynamic bearing

lubricated with magnetic fluids, Journal of Physics: Conference series, 149(1), Article ID 012113.

Huang, W., Shen, C., Liao, S., Wang, X., 2011, Study on the ferrofluid lubrication with an external

magnetic field, Tribology Lett., 41, pp. 145-151.

Patel, N.S., Vakharia, D.P., Deheri, G.M., 2012, A Study on the Performance of a Magnetic-Fluid-

Based Hydrodynamic Short Journal Bearing, ISRN Mechanical Engineering, 2012, Article ID 603460.

Luo, J.B., 1994, On Experimental Technique and Characteristic of Thin Film Lubrication, Tsinghua University Doctor Dissertation.

Luo, J.B., Wen, S.Z., Huang, P., 1996, Thin film lubrication, Part 1: The transition between EHL and thin film lubrication, Wear, 194, pp. 107-115.

Luo, J.B., Wen, S.Z. 1997, The transition between elastohydro-dynamic lubrication and boundary lubrication, 1st World Tribology Conference (ed. Hutchings, I. M.), London: Mechanical Engineering Publication, pp. 9-14.

Shen, M.W., Luo, J.B., Wen, S.Z., 2001, Nano-tribological properties and mechanisms of the liquid crystal as an additive, Chinese Science Bulletin, 46(14), pp.1227-1232.

Zhang, C., Wan, S., and Luo, J., 2002, Characteristic of lubrication at nano scale in two-phase fluid system, Science in China, 45(2), pp.166-172.

Christensen, H., Tonder, K.C., 1969a, Tribology of rough surfaces: stochastic models of hydrodynamic lubrication, SINTEF, Report No.10 pp. 69-18.

Christensen, H., Tonder, K.C., 1969b, Tribology of rough surfaces: parametric study and comparison of lubrication models, SINTEF, Report No.22 pp. 69-18.

Christensen, H., Tonder, K.C., 1970, The hydrodynamic lubrication of rough bearing surfaces of finite width, ASME-ASLE Lubrication Conference, Cincinnati. OH. Paper no. 70-lub-7, October 12-15.

Gupta, J.L., Deheri, G.M., 1996, Effect of Roughness on the Behavior of Squeeze Film in a Spherical Bearing, Tribology Transactions, 39, pp. 99-102.

Chiang, H.L., Hsu, C.H., Lin, J.R., 2004, Lubrication performance of finite journal bearings considering effects of couple stresses and surface roughness, Tribology International, 37(4), pp. 297–307.

Patel, H.C., Deheri, G.M., 2009, Characteristics of lubrication at nano scale on the performance of transversely rough slider bearing, Mechanika, 6(80), pp. 64-71.

Deresse, G.A., Sinha, P., 2011, THD analysis for finite slider bearing with roughness: special reference to load generation in parallel sliders, Acta Mech., 222, pp. 1-15,.

Vakis, A.I., Polycarpou, A.A., 2013, An Advanced Rough Surface Continuum-Based Contact and Sliding Model in the Presence of Molecularly Thin Lubricant, Tribology Letters, 49(1), pp. 227-238.

Patel, J.R., Deheri, G.M.., 2014, Effect of various porous structures on the shliomis model based ferrofluid lubrication of the film squeezed between rotating rough curved circular plates, Facta Universitatis, series: Mechanical Engineering, 12(3), pp. 305-323

Patel, J.R., Deheri, G.M., 2015, On the Performance Characteristics of Rough Short Bearing Considering Thin Film Lubrication at Nano Scale, International Journal of Materials Lifetime, 2(1), pp. 44-50.

Agrawal, V.K., 1986, Magnetic fluid based porous inclined slider bearing, Wear, 107, pp. 133-139.

Prajapati, B.L., 1995, On Certain Theoretical Studies in Hydrodynamic and Electro-magneto hydrodynamic Lubrication, PhD thesis, S.P. University, Vallabh Vidyanagar, Gujarat, India.

Bhat, M.V., 2003, Lubrication with a Magnetic fluid, Team Spirit (India) Pvt. Ltd.

Patel, J.R., Deheri, G.M., 2014, Slip Velocity and Roughness Effect on Magnetic Fluid Based Infinitely Long Bearings, Proceedings of International Conference on Advances in Tribology and Engineering Systems Lecture Notes in Mechanical Engineering, Springer India, pp. 97-109.

Luo, J.B., Qian, L.M., Wen, S.Z., 1999, The failure of fluid at nano–scale, STLE. -Tribology Trans., 42(4), pp. 912-916.

Patel, J.R., Deheri, G.M., 2013, A Comparison of Porous Structures on the Performance of a Magnetic Fluid Based Rough Short Bearing , Tribology in Industry, 35(3), pp. 177-189.

Patel, J.R., Deheri, G.M., 2015, A Comparison of Different Porous Structures on the Performance of A Magnetic Fluid Based Double Porous Layered Rough Slider Bearing, International Journal of Materials Lifetime, 1(1), pp. 29-39.

DOI: https://doi.org/10.22190/FUME1601089P


  • There are currently no refbacks.

ISSN: 0354-2025 (Print)

ISSN: 2335-0164 (Online)

COBISS.SR-ID 98732551

ZDB-ID: 2766459-4