Effects of a Rayleigh step aspect ratio on the thermohydrodynamic behavior of power law lubricant flows

• Autorzy: Jeddi L. , Bonneau D. , El Khlifi M.
• Konferencja: Third International Conference on Engineering Rheology, ICER 2005
• Języki publikacji: EN

Abstrakty

EN

The thermohydrodynamic behavior of the lubricant flow in a Rayleigh step is described by a mathematical model that uses the bidimensional Navier-Stokes and energy equations written in terms of the primary variables u, v, p and T. The non-Newtonian behavior of the lubricant is described by a power law model. The lubricant is assumed to be incompressible and the process is steady-state and laminar. The equations are solved simultaneously using the incremental load method associated with the Newton-Raphson method and the finite element formulation. The effects of a Rayleigh step aspect ratio on the velocities, pressure and temperature patterns for different power law index are investigated.

Słowa kluczowe

EN

Rayleigh step aspect ratio; power law model; thermohydrodynamic

PL

termodynamika; środek smarny; fala Rayleigha

• Wydawca: Oficyna Wydawnicza Uniwersytetu Zielonogórskiego
• Czasopismo: International Journal of Applied Mechanics and Engineering
• Rocznik: 2005
• Tom: Vol. 10, no spec
• Strony: 233--238
• Opis fizyczny: Bibliogr. 5 poz., rys., tab., wykr.

Twórcy

autor

Jeddi L.

• Laboratoire de Mécanique des Solides (U.M.R. C.N.R.S. 6610), Université de Poitiers 4, Avenue de Varsovie, 16021 Angouleme Cedex, FRANCE

autor

Bonneau D.

• Laboratoire de Mécanique des Solides (U.M.R. C.N.R.S. 6610), Université de Poitiers 4, Avenue de Varsovie, 16021 Angouleme Cedex, FRANCE

autor

El Khlifi M.

• U.F.R. de Mecanique des Fluides et de Structures, Faculte des Sciences et Techniques B.P. 146, 20650 Mohammedia, MOROCCO

Bibliografia

• [1] Hong Y., Chen D., Wang J. and Li X. (2003): Numerical modeling of a Newtonian and a Bingham fluid in a f step bearing. - J. Tribology, vol.125, pp.206-210.
• [2] Jeddi L. (2004): Visualisation et modélisation thermohydrodynamique par éléments finis de l’alimentation des contacts lubrifiés. - Thèse de Doctorat, Université de Poitiers.
• [3] Kelly D.W., Nakazawa S., Zienkiewicz O.C. and Heinrich J.C. (1980): A note on upwinding and anisotropic belancing dissipation in finite element approximations to convective diffusion problems. - Int. J. for Numerical Met Engineering, vol.15, pp.1705-1711.
• [4] Radulesco A.V., Bonneau D. and Hajjam M. (2000): Theoretical study of the bidimensionnal grease flow process in the regions with discontinuities. - Proc. 2000 AIMETA International Tribology Confrence, l’Aquila, Italy, pp.87-94.
• [5] Zienkiewicz O.C. and Taylor R.L. (1989): The Finite Element Method. - Fourth edition, vol.l and 2, London: McGrow-Hill.