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TECHNICAL PAPERS: Natural and Mixed Convection

Effect on Natural Convection of the Distance Between an Inclined Discretely Heated Plate and a Parallel Shroud Below

[+] Author and Article Information
Oronzio Manca

Dipartimento di Ingegneria Aerospaziale e Meccanica, Seconda Università degli studi di Napoli, Aversa (CE), Italye-mail: manca@unina.it

Sergio Nardini

Dipartimento di Ingegneria Aerospaziale e Meccanica, Seconda Università degli studi di Napoli, Aversa (CE), Italye-mail: nardini@unina.it

Vincenzo Naso

Dipartimento di Energetica, Termofluidodinamica, applicata e Condizionamenti ambientali, Università degli studi di Napoli Federico II, Napoli, Italye-mail: vinaso@unina.it

J. Heat Transfer 124(3), 441-451 (May 10, 2002) (11 pages) doi:10.1115/1.1470488 History: Received July 24, 2000; Revised January 07, 2002; Online May 10, 2002
Copyright © 2002 by ASME
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References

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Figures

Grahic Jump Location
Side view of the channel and sketch of the experimental arrangement
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Sketch of the visualization apparatus
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Wall temperature rise above the ambient temperature as a function of the coordinate along the channel length and of the angle, for the Case I-4, b=32.3 mm and qΩ=340 W m−2.
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Sketch of the air inflow near the exit section of the channel
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Wall temperature rise above the ambient temperature as a function of the coordinate along the channel length and of the angle, for qΩ=340 W m−2: (a) Case I-4; (b) Case I-8
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Wall temperature rise above the ambient temperature as a function of the coordinate along the channel length and of the angle, for the Case II-4, 6 and qΩ=340 W m−2: (a) b=20.0 mm; (b) b=32.3 mm; (c) b=40.0 mm
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Wall temperature rise above the ambient temperature as a function of the coordinate along the channel length and of the angle, for the Case III-4, 6, 8 and qΩ=340 W m−2: (a) b=20.0 mm; (b) b=40.0 mm
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Maximum wall temperature rise above the ambient temperature as a function of the channel gap and of the inclination angle, for the Case I-4 and qΩ=340 W m−2
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Dimensionless maximum wall temperature rise as a function of the inclination angle, for qΩ=340 W m−2 and qΩ=660 W m−2,b=20.0, 32.3, and 40.0 mm: (a) Case I-4; (b) Case I-6; (c) Case I-8
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Dimensionless maximum wall temperature rise as a function of the inclination angle, for Case III, qΩ=340 W m−2 and qΩ=660 W m−2,b=20.0, 32.3, and 40.0 mm
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Dimensionless maximum wall temperature rise as a function of the strip Rayleigh number, the cosine of the inclination angle, the ratio of the channel spacing to the strip length (a) Cases I; (b) Cases II; (c) Case III
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Visualization of the flow patterns in the exit region of the channel for b=32.25 mm: (a) Case I-4, qΩ=660 W m−2,θ=85 deg; (b) Case I-8, qΩ=660 W m−2,θ=85 deg, (c) Case I-4, qΩ=340 W m−2,θ=90 deg; (d) Case I-4, qΩ=660 W m−2,θ=90 deg; (e) Case I-6, qΩ=660 W m−2,θ=90 deg
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Local Nusselt number as a function of the local Rayleigh number and of the tilting angle, for the upstream strip in all Cases

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