Free convection from a vertical cylinder embedded in a porous medium filled with cold water

• Autorzy: Chamkha A. J. , Bercea C. , Pop I.
• Języki publikacji: EN

Abstrakty

EN

A free convection boundary layer flow along a heated vertical cylinder embedded in a porous medium saturated with pure or saline water at low temperatures, up to 20oC, is considered. The boundary layer analysis is formulated in terms of Darcy's law and a new density equation of state, which is of very high accuracy and of simple form, is postulated. Numerical solutions are presented and the flow field characteristics are analysed in detail for both cases of downward and upward flows. A very good agreement between the present results and those reported for particular situations was found.

Słowa kluczowe

EN

free convection; vertical cylinder; porous medium; pure or saline water at low temperatures

PL

mechanika; cylinder pionowy; konwekcja swobodna; niska temperatura

• Wydawca: Oficyna Wydawnicza Uniwersytetu Zielonogórskiego
• Czasopismo: International Journal of Applied Mechanics and Engineering
• Rocznik: 2004
• Tom: Vol. 9, no 2
• Strony: 273--283
• Opis fizyczny: Bibliogr. 11 poz., wykr.

Twórcy

autor

Chamkha A. J.

• Production Engineering Department The Public Authority for Applied Education and Training Shuweikh, 70654, KUWAIT

autor

Bercea C.

• Faculty of Mathematics, University of Cluj R-3400 Cluj, CP 253, ROMANIA

autor

Pop I.

• Faculty of Mathematics, University of Cluj R-3400 Cluj, CP 253, ROMANIA

Bibliografia

• [1] Blottner F.C. (1970): Finite-difference methods of solution of the boundary-layer equations. - AIAA J., vol.8, pp. 193-205.
• [2] Gebhart B. and Mollendorf J.C. (1977): Buoyancy induced flow in water under conditions in which density extremum may arise. - Deep Sea Res., vol.24, pp.831-841.
• [3] Gebhart B., Hassard B., Hastings S.P. and Kazarinoff N. (1983): Multiple steady state solutins for buoyancy induced transport in porous media saturated with cold pure and saline water. - Numer. Heat Transfer, vol.6, pp.337-352.
• [4] Ingham D.B. and Pop I. (Eds.) (1998; Vol.II: 2002): Transport Phenomena in Porous Media. - Oxford: Pergamon.
• [5] Kukula D.J., Gebhart B. and Mollendorf J.C. (1987): Thermodynamic and transport properties of pure and saline water. - Adv. Heat Transfer, vol. 18, pp.325-363.
• [6] Lin D.S. and Gebhart B. (1986): Buoyancy-induced flow adjacent to a horizontal surface submerged in porous medium saturated with cold water. - Int. J. Heat Mass Transfer, vol.29, pp.611-623.
• [7] Minkowycz WJ. and Cheng P. (1976): Free convection about a vertical cylinder embedded in a porous medium. - Int. J. Heat Mass Transfer, vol. 19, pp.805-813.
• [8] Nield D.A. and Bejan A. (1999): Convection in Porous Media. - New York: Springer, 2nd Ed.
• [9] Pop I. and Ingham D.B. (2001): Convective Heat Transfer: Mathematical and Computational Modelling of Viscous Fluids and Porous Media. - Pergamon, Oxford.
• [10] Ramilison D.A. and Gebhart B. (1980): Buoyancy induced transport in porous media saturated with pure or saline water at low temperatures. - Int. J. Heat Mass Transfer, vol.23, pp. 1521-1530.
• [11] Vafai K. (ed.) (2000): Handbook of Porous Media. - New York: Marcel Dekker.