A numerical study is made to investigate the forced laminar convection in the hydrodynamically and thermally fully developed region of a curved isothermal square duct. Solutions with one and two pairs of vortices superimposed on the main flow are obtained. In the thermally fully developed region, a three-dimensional energy equation of elliptic type is reduced to a two-dimensional one with an eigenvalue, and the axial diffusion term is considered for a small value of the Peclet number. Flow characteristics for cases of dimensionless radius of curvature β = ∞, 50, 10, and 5 with the square of the Dean number ranging from 0 to 106 in a square duct are studied. In addition, heat transfer characteristics for large dimensionless radii of curvature, Pr=0.7 and 7.0, and Peclet number Pe=∞, 10, 5, and 1 are also examined.
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Forced Laminar Convection in a Curved Isothermal Square Duct
G. J. Hwang,
G. J. Hwang
Department of Power Mechanical Engineering, National Tsing Hua University, Hsinchu, Taiwan, 30043
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Chung-Hsing Chao
Chung-Hsing Chao
Department of Power Mechanical Engineering, National Tsing Hua University, Hsinchu, Taiwan, 30043
Search for other works by this author on:
G. J. Hwang
Department of Power Mechanical Engineering, National Tsing Hua University, Hsinchu, Taiwan, 30043
Chung-Hsing Chao
Department of Power Mechanical Engineering, National Tsing Hua University, Hsinchu, Taiwan, 30043
J. Heat Transfer. Feb 1991, 113(1): 48-55 (8 pages)
Published Online: February 1, 1991
Article history
Received:
July 10, 1989
Revised:
May 18, 1990
Online:
May 23, 2008
Citation
Hwang, G. J., and Chao, C. (February 1, 1991). "Forced Laminar Convection in a Curved Isothermal Square Duct." ASME. J. Heat Transfer. February 1991; 113(1): 48–55. https://doi.org/10.1115/1.2910550
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