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TECHNICAL PAPERS: Forced Convection

Numerical Prediction of Flow and Heat Transfer in a Rectangular Channel With a Built-In Circular Tube

[+] Author and Article Information
S. Tiwari, G. Biswas, P. L. N. Prasad, Sudipta Basu

Department of Mechanical Engineering, Indian Institute of Technology, Kanpur-208016, India

J. Heat Transfer 125(3), 413-421 (May 20, 2003) (9 pages) doi:10.1115/1.1571087 History: Received February 26, 2002; Revised February 13, 2003; Online May 20, 2003
Copyright © 2003 by ASME
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References

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Figures

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Schematic diagram of the core region of a fin-tube heat exchanger
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The module of the heat exchanger
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Schematic representation of the three-dimensional grid
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Schematic representation of the singular points
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Streamline representation of the flow past a circular tube placed in a channel on the horizontal midplane for (a) instantaneous flow field and (b) time-averaged flow field
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Structure of three-dimensional flow (particle path)
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Limiting streamlines on the tube surface
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Positive and negative bifurcation lines
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Limiting streamlines of the flow past a built-in circular tube in a channel at the bottom plate corresponding to (a) instantaneous flow field and (b) time-averaged flow field
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Iso-Nusselt number distribution on the bottom wall
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Variation of span-averaged Nu with Reynolds number (D/B=0.444)
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Transverse variation of local Nusselt number
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Variation of span-averaged Nu with blockage ratio (Re=1000)
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Comparison of span-averaged Nusselt number at three different time instants with the time-averaged span-averaged Nusselt number
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Pressure variation along the length of the channel for different values of Reynolds number
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Comparison of transverse variation of heat transfer coefficient in the wake region
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Comparison of span-averaged Nusselt number for two different grids (time-averaged plots)
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Time series signal of transverse velocity at a point in the wake of circular tube
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FFT of the time series of transverse velocity signal
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Time-delay reconstructions of the transverse velocity signal

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