Warianty tytułu
Języki publikacji
Abstrakty
This work uses a thermal non-equilibrium model to study the free convection boundary layer flow from cylinders of elliptic cross-section with uniform suction or injection in a micropolar fluid through a porous medium in the presence of a uniform magnetic field. The transformed conservation equations of the nonsimilar boundary layers are solved numerically by the shooting technique with a fourth-order Runge-Kutta integration scheme and the results compare very well with published results. The results obtained are displayed graphically to illustrate the influences of different physical parameters on the local heat transfer rate (Nusselt number) for the fluid and solid phases, velocity, angular velocity and streamlines.
Rocznik
Tom
Strony
443-459
Opis fizyczny
Bibliogr. 10 poz., tab., wykr.
Twórcy
autor
autor
autor
autor
- Department of Mathematics, Assuit University Assuit, EGYPT, r.gorla@yahoo.com
Bibliografia
- Amiri A. and Vafai K. (1998): Transient analysis of incompressible flow through a packed bed. - Int. J. Heat Mass Transfer, vol.41, pp.4259-4279.
- Bhattacharyya S. and Pop I. (1996): Free convection from cylinders of elliptic cross-section in micropolar fluids. - Int. J. Eng Sci., vol.34, pp.1301-1310.
- Eringen A.C. (1964): Simple Microfluids. - Int. J. Eng. Sci., vol.2, pp.205-215.
- Eringen A.C. (1966): Theory of micropolar fluids. - J. Math. Mech., vol.16, pp.1-18.
- Kim S.J. and Lee D.Y. (2000): On the local thermal equilibrium microchannel heats sinks. - Int. J. Heat Mass Transfer, vol.43, pp.1735-1748.
- Lee D.Y. and Vafai K. (1999): Analytical characterization and conceptual assessment of solid and fluid temperature differentials in porous media. - Int. J. Heat Mass Transfer, vol.42, pp.423-435.
- Merkin J.H. (1977): Free convection boundary layers on cylinders of elliptic cross-section. - ASME J. Heat Transfer, vol.99, pp.453-457.
- Quintard M. (1998): Modelling local non-equilibrium heat transfer in porous media. - Proceeding of the 11 th International Heat Transfer Conference, vol.1, pp.279-285.
- Quintard M. and Whitaker S. (1993): One- and two-equation models for transient diffusion processes in two-phase system. - Adv. Heat Transfer, vol.23, pp.369-464.
- Schlunder E.U. (1975): Equivalence of one- and two-phase models for heat transfer processes in packed beds: one dimensional theory. - Chem. Eng. Sci., vol.30, pp.449-452.
Typ dokumentu
Bibliografia
Identyfikatory
Identyfikator YADDA
bwmeta1.element.baztech-article-BPZ2-0041-0010