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TECHNICAL PAPERS: Natural and Mixed Convection

Natural Convection Heat Transfer and Entropy Generation From a Horizontal Cylinder With Baffles

[+] Author and Article Information
B. A/K Abu-Hijleh

Department of Mechanical Engineering, Jordan University of Science & Technology, P. O. Box 3030, Irbid 22110, Jordane-mail: bassam@just.edu.jo

J. Heat Transfer 122(4), 679-692 (Apr 05, 2000) (14 pages) doi:10.1115/1.1287501 History: Received September 23, 1999; Revised April 05, 2000
Copyright © 2000 by ASME
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References

Morgan,  V. T., 1975, “The Overall Convective Heat Transfer From Smooth Circular Cylinders,” Adv. Heat Transfer, 11, pp. 199–264.
Churchill,  S. W., and Chu,  H. H. S., 1975, “Correlating Equations for Laminar and Turbulent Free Convection From a Horizontal Cylinder,” Int. J. Heat Mass Transf., 18, pp. 1049–1053.
Kuehn,  T. H., and Goldstein,  R. J., 1980, “Numerical Solutions to the Navier-Stokes Equations for Laminar Natural Convection About a Horizontal Cylinder,” Int. J. Heat Mass Transf., 23, pp. 971–979.
Farouk,  B., and Guceri,  S. I., 1981, “Natural Convection From a Horizontal Cylinder-Laminar Regime,” ASME J. Heat Transfer, 103, pp. 522–527.
Wang,  P., Kahawita,  R., and Nguyen,  T. H., 1990, “Numerical Computation of the Natural Convection Flow About a Horizontal Cylinder Using Splines,” Numer. Heat Transfer, Part A, 17, pp. 191–215.
Saitoh,  T., Sajik,  T., and Maruhara,  K., 1993, “Bench Mark Solutions to Natural Convection Heat Transfer Problem Around a Horizontal Circular Cylinder,” Int. J. Heat Mass Transf., 36, pp. 1251–1259.
Chai,  J. C., and Patankar,  S. V., 1993, “Laminar Natural Convection in Internally Finned Horizontal Annuli,” Numer. Heat Transfer, Part A, 24, pp. 67–87.
Abu-Hijleh,  B. A/K, Abu-Qudais,  M., and Abu-Nada,  E., 1998, “Entropy Generation due to Laminar Natural Convection From a Horizontal Isothermal Cylinder,” ASME J. Heat Transfer, 120, pp. 1089–1990.
Vafai,  K., and Huang,  P. C., 1994, “Analysis of Heat Transfer Regulation and Modification Employing Intermittently Emplaced Porous Cavities,” ASME J. Heat Transfer, 116, pp. 604–613.
Al-Nimr,  M. A., and Alkam,  M. K., 1998, “A Modified Tubeless Solar Collector Partially Filled With Porous Substrate,” Renewable Energy, 13, pp. 165–173.
Bejan, A., 1982, Entropy Generation Through Heat and Fluid Flow, Wiley, New York.
Anderson, J. D., 1994, Computational Fluid Dynamics: The Basics with Applications, McGraw-Hill, New York.
Patankar, S. V., 1980, Numerical Heat Transfer of Fluid Flow, McGraw-Hill, New York.
Ahmad,  R. A., 1996, “Steady-State Numerical Solution of the Navier-Stokes and Energy Equations Around a Horizontal Cylinder at Moderate Reynolds Numbers from 100 to 500,” Heat Transfer Eng., 17, pp. 1–81.
Abu-Hijleh,  B. A/K, Jadallah,  I. N., and Abu-Nada,  E., 1998, “Entropy Generation due to Natural Convection From a Horizontal Isothermal Cylinder in Oil,” Int. Commun. Heat Mass Transfer, 25, pp. 1135–1143.

Figures

Grahic Jump Location
Total entropy generation as a function of baffle height (H) at selective combinations of Rayleigh number and cylinder diameter
Grahic Jump Location
Schematic of the problem, case of a cylinder with three baffles
Grahic Jump Location
Schematic of the computational grid in the physical (left) and computational (right) domains
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Comparison of the local Nusselt number for the case of a smooth cylinder
Grahic Jump Location
Change in the average Nusselt number as a function of the number of baffles at different RaD
Grahic Jump Location
Change in the average Nusselt number as a function of RaD at selective number of baffles
Grahic Jump Location
Changes in the streamline and temperature contours between the case of a smooth cylinder (right) and a baffle equipped cylinder (left) for the cases (B,H,RaD) from top: (1,0.75,105),(2,2.0,102),(3,1.5,103), and (8,1.0,104)
Grahic Jump Location
Total entropy generation as a function of RaD at selective combinations of number of baffles and cylinder diameter

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