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TECHNICAL PAPERS: Forced Convection

Heat Transfer and Pressure Drop Characteristics of Laminar Flow Through a Circular Tube With Longitudinal Strip Inserts Under Uniform Wall Heat Flux

[+] Author and Article Information
S. K. Saha

Mechanical Engineering Department, Bengal Engineering College, Deemed University, Howrah 711 103, West Bengal, Indiae-mail: sujoy_k_saha@hotmail.com

P. Langille

Department of Mechanical Engineering, Dalhousie University, Halifax, Nova Scotia, B3J 2X4, Canadae-mail: ocean_wave_13@hotmail.com

J. Heat Transfer 124(3), 421-432 (May 10, 2002) (12 pages) doi:10.1115/1.1423907 History: Received May 04, 2001; Revised October 01, 2001; Online May 10, 2002
Copyright © 2002 by ASME
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References

Figures

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The geometry and dimensions of the inserts used in this study
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Heat transfer test section
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Variation of friction factor with Reynolds number for short-length strips: (a) cross strip; Aspect ratio 4; (b) longitudinal strip (aspect ratio 4); and (c) longitudinal strip (aspect ratio 1)
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Comparison of experimental friction factor with that predicted from Eq. (7) for short-length strips
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Variation of Nusselt number with Graetz number for short-length strips: (a) cross strip (aspect ratio 4); (b) longitudinal strip (aspect ratio 4) and (c) longitudinal strip (aspect ratio 1)
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Comparison of experimental Nusselt number with that predicted from Eq. (8) for short-length strips
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Variation of friction factor with Reynolds number for regularly-spaced strip elements—cross strip (aspect ratio 4): (a) y=2.5,s=5; (b) y=2.5,s=2.5; (c) y=5,s=5; and (d) y=5,s=2.5
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Variation of friction factor with Reynolds number for regularly-spaced strip elements—longitudinal strip (aspect ratio 4): (a) y=2.5,s=5; (b) y=2.5,s=2.5; (c) y=5,s=5; and (d) y=5,s=2.5
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Variation of friction factor with Reynolds number for regularly-spaced strip elements—longitudinal strip (aspect ratio 1): (a) y=2.5,s=5; (b) y=2.5,s=2.5; (c) y=5,s=5; and (d) y=5,s=2.5
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Comparison of experimental friction factor with that predicted from Eq. (9) for regularly-spaced strip elements
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Variation of Nusselt number with Graetz number for regularly-spaced strip elements—cross strip (aspect ratio 4): (a) y=2.5,s=2.5; and (b) y=5,s=5
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Variation of Nusselt number with Graetz number for regularly-spaced strip elements—longitudinal strip (aspect ratio 4): (a) y=2.5,s=2.5; and (b) y=5,s=5
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Variation of Nusselt number with Graetz number for regularly-spaced strip elements—longitudinal strip (aspect ratio 1): (a) y=2.5,s=2.5; and (b) y=5,s=5
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Comparison of experimental Nusselt number with that predicted from Eq. (10) for regularly-spaced strip elements

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