Vibrational effect on heat transfer and entropy generation in a circular porous cavity

• Autorzy: Mahmud S. , Fraser R. A.
• Języki publikacji: EN

Abstrakty

EN

We investigate the nature of heat transfer and entropy generation for natural convection in a two-dimensional circular section enclosure vibrating sinusoidally perpendicular to the applied temperature gradient in a zero-gravity field. The enclosure is assumed to fill with porous media. The Darcy momentum equation is used to model the porous media. The full governing differential equations are simplified with the Boussinesq approximation and solved by a finite volume method. Whereas the Prandtl number Pr is fixed to 1.0. Results are presented in terms of the average Nusselt number (Nuav), entropy generation number (Nsav), Bejan number (Beav), and kinetic energy (KEav).

Słowa kluczowe

EN

convection; heat transfer; entropy generation; irreversibility; porous media; vibration

PL

konwekcja; wymiana ciepła; wibracja; nieodwracalność; entropia

• Wydawca: Oficyna Wydawnicza Uniwersytetu Zielonogórskiego
• Czasopismo: International Journal of Applied Mechanics and Engineering
• Rocznik: 2004
• Tom: Vol. 9, no 3
• Strony: 523--533
• Opis fizyczny: Bibliogr. 21 poz., rys., tab., wykr.

Twórcy

autor

Mahmud S.

• Department of Mechanical Engineering, University of Waterloo 200 University Avenue West, Waterloo, Ontario, N2L3G1, CANADA

autor

Fraser R. A.

• Department of Mechanical Engineering, University of Waterloo 200 University Avenue West, Waterloo, Ontario, N2L3G1, CANADA

Bibliografia

• [1] Baytas A.C. and Pop I. (1999): Free convection in oblique enclosures filled with a porous medium. - Int. J. Heat Mass Transfer, vol.42, pp. 1047-1057.
• [2] Bejan A. (1984): Convection Heat Transfer. - New York: John Wiley & Sons.
• [3] Bejan A. (1996): Entropy Generation Minimization. - New York: CRC Press.
• [4] Bejan A. (2002): Fundamental of exergy analysis, entropy generation minimization, and the generation of flow architecture. - Int. J. Energy Research, vol.26, pp.545-565.
• [5] Biringen S. and Danabasoglu G. (1990): Computation of convective flow with gravity modulation in rectangular cavities. - J. Thermophys., vol.4, pp.357-365.
• [6] Ferguson F.T. and Lilleleht L.U. (1996): Thermovibrational convection in a vertical cylinder. - Int. J. Heat Mass Transfer, vol.39, pp.2895-2906.
• [7] Gershuni G.Z., Zhukhovitsky E.M. and Sharifulin A.N. (1983): Vibrational thermal convection in cylindrical cavity. - Numer. Meth. Cont. Med. Mech., vol.l4, pp.21-33.
• [8] Gershuni G.Z. and Lyubimov D.V. (1997): Thermal Vibrational Convection. - New York: John Wiley & Sons.
• [9] Gershuni G.Z. and Zhukhovitskiy Y.M. (1986): Vibration-induced thermal convection in weightlessness. — Fluid Mech.-Sov. Res., vol.l5, pp.63-84.
• [10] Goldhirsch I., Pelz R.B. and Orszag S.A. (1989): Numerical simulation of thermal convection in a two-dimensional finite box. - J. Fluid Mech., vol.l99, pp.1-28.
• [11] Gross R.J., Bear M.R. and Hickox C.E. (1986): The application of flux-corrected transport (FCT) to high Rayleigh number natural convection in porous medium, In: Proc. 8th International Heat Transfer Conference (C.L. Tien, V.P. Carey, K.K. Ferrell, Eds.). - San Francisco, CA, August 17-22, 1986.
• [12] Hirata K., Sasaki T. and Tanigawa H. (2001): Vibrational effects on convection in a square cavity at zero gravity. - J. Fluid Mechanics, vol.445, pp.327-344.
• [13] Kamotani Y., Prasad A. and Ostrach S. (1981): Thermal convection in an enclosure due to vibrations aboard spacecraft. - AIAA J., vol.l9, pp.511-516.
• [14] Kondos P.A. and Subramanian R.S. (1996): Buoyant flow in a two-dimensional cavity due to a sinusoidal gravitational field. - Microgravity Sci. Technol., vol.9, pp. 143-151.
• [15] Manole D.M. and Lagę J.L. (1992): Numerical benchmark results for natural convection in a porous medium cavity. - Heat and Mass Transfer in Porous Media, Heat Transfer Division (HTD), vol.216, ASME Winter Annual Meeting, November 1992, Anaheim, CA, USA, pp.55-60.
• [16] Moya S.L., Ramos E. and Sen M. (1987): Numerical study of natural convection in a tilted rectangular porous materiał. - Int. J. Heat Mass Transfer, vol.30, pp.741-756.
• [17] Sharifulin A.N. (1981): Vibrational convection in cylindrical cavity under arbitrary direction of heating, In: Convective Flows. - Perm, Russia: Perm State University, pp.22-29.
• [18] Sharifulin A.N. (1986): Supercritical vibration-induced thermal convection in a cylindrical cavity. - Fluid Mech.-Sov. Res., vol.l5, pp.28-35.
• [19] Siraev R.R. (1989): Vibrational thermal convection near the homogeneously heated cylinder. - Trans. Acad. Sci., SSSR (lzvestiya), Mech. Zhidk. Gaza, vol.3, pp.23-26.
• [20] Wadih M. and Roux B. (1988): Natural convection in a long vertical cylinder under grafity modulation. - J. Fluid Mech., vol.l93, pp.391-415.
• [21] Walker K.L. and Homsy G.M. (1978): Convection in a porous cavity. - J. Fluid Mechanics, vol.87, pp.449-474.