Volume-4 Issue-11

Download 18
Total Views 141
File Size 4.00 KB
File Type unknown
Create Date June 19, 2018
Last Updated August 28, 2018

Download Abstract Book

S. No

Volume-4 Issue-11, August 2018, ISSN: 2319-9598 (Online)
Published By: Blue Eyes Intelligence Engineering & Sciences Publication Pvt. Ltd.

Page No.



Sachin Kumar

Paper Title:

Analysis of Performance Characteristics of Journal Bearing with Micropolar Fluid and Comparison to Newtonian Fluid

Abstract: The present work deals with the dynamic behaviour of a Plane Journal Bearing working in condition of Micropolar lubrication. As from the characteristics of Micropolar fluid the Plane Journal Bearing is being observed under the increase in fluid film pressure and fluid film thickness but a decrease in the side flow as compared to Newtonian fluids. On the basis of the theory of micropolar fluids, the modified Reynolds’s equation for dynamic loads is derived. Results from the numerical analysis indicated that the effects of micropolar fluids on the performance of a dynamically loaded journal bearing are evaluated. Applying the half sommerfeld’s boundary conditions, the pressure distribution in journal bearing is obtained and the dynamic characteristics in terms of the components of stiffness and damping coefficients, friction drag and side flow obtained with respect to the micropolar property for varying eccentricity ratios. The results show that micropolar fluid exhibits better stability in comparison with Newtonian fluid. The finite element analysis of journal bearing has done by using programming software package MATLAB

Keywords: Finite Element Analysis, Newtonian Fluid, Reynolds’s Equation, Micropolar Fluid 


  1. C. Eringen, Simple microfluids, Znf. J. Eng. Ski, 2 (1964) 295.
  2. C. Eringen, Theory of micropolar fluids, J. Math. Mech, 16 (1966) 1.
  3. “S. J. Allen and K. A. Kline, Lubrication theory for micropolar fluids, Trans. ASME,(1971) 646.
  4. Ariman TT, Sylvester ND. Micro-continuum fluid mechanics:-a review. Int J Eng Sci 1973; 11:905–30.
  5. Khader MS, Vachon RI. Theoretical effects of solid particles in hydrostatic bearing lubricant. J Lubr Tech 1973; 95:104–5.
  6. Ariman TT, Sylvester ND. Applications of micro-continuum fluid mechanics. Int J Eng Sci 1974; 12:273–93.
  7. B. Shukla and M. Isa, Generalized Reynolds equation for micropolar lubricants and its application to optimum one-dimensional slider bearings: effect of solid particle additives in solution, Proc. ht. me &. Eng. London, 17 (1975) 280.
  8. Prakash and P. Sinha, Lubrication theory for micropolar fluids and its application to a journal bearing, Znt. J. Eng. Sci, 13 (1975) 217.
  9. Prakash J, Sinha P. Cyclic squeeze films in micropolar fluid lubricated journal bearings. J Lubr Tech 1976; 98:412–7.
  10. Sinha P. Dynamically loaded micropolar fluid lubricated journal bearings with special reference to squeeze films under fluctuating loads. Wear 1977; 45:279–92.
  11. Sinha P. Effect of rigid particles in the lubrication of rolling contact bearings considering cavitation. Wear 1977; 44:295–309.
  12. Zaheeruddin Kh, Isa M. Micropolar fluid lubrication of one dimensional journal bearings. Wear 1978; 50:211–20.
  13. Tipei, Lubrication with micropolar liquids and its application to short bearing, Trans. ASME, 101 (1979) 356
  14. Yadav JS, Kapur VK. Inertia and fluid suspension effects in a thrust bearing. Wear 1981; 66:9–16.
  15. Singh and P. Sinha, The three-dimensional Reynolds equation for micro-polar fluid lubricated bearings, Wear, 76 (1982) 199.
  16. Khonsari MM, Brewe DE. On the performance of finite journal bearing lubricated with micropolar fluids. Tribology Trans 1989; 32(2):155–60.]
  17. Huang TW, Weng CI. Dynamic characteristics of finite-width journal bearings with micropolar fluids. Wear 1990; 141:23–33.
  18. Lin TR. Analysis of film rupture and re-formation boundaries in a finite journal bearing with micropolar fluids. Wear 1993; 161:145–53.
  19. Hamrock BJ. Fundamentals of fluid film lubrication. New York: McGraw-Hill; 1994.
  20. Rohit SP, Taeyong H. Atransient thermo-hydrodynamic analysis including mass conserving cavitation for dynamically loaded journal bearings. ASME J Tribology 1995; 117:369–78.
  21. Das S, Guha SK, Chattopadhyay AK. On the steady-state performance of misaligned hydrodynamic journal bearings lubricated with micropolar fluids. Tribol Int 2002; 35:201–10.
  22. Wang XL, Zhu KQ, Wen SZ. On the performance of dynamically loaded journal bearings lubricated with couple stress fluids. Tribology Int 2002; 35:185–91.]
  23. Partial differentiation equation tool box –MATLAB