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TECHNICAL PAPERS: Natural and Mixed Convection

Use of an Inverse Method to Determine Natural Convection Heat Transfer Coefficients in Unsteady State

[+] Author and Article Information
A. Trombe

Laboratoire d’Energétique, Université Paul Sabatier, Toulouse III, 118 Route de Narbonne, 31062 Toulouse Cedex 4, France

A. Suleiman

Universite de Tichrin, Faculté de Génie Mécanique et Electrique, Lattaquié, Syrie

Y. Le Maoult

Centre des Matériaux de l’Ecole des Mines Albi-Carmaux, Campus Jarlard, Route du Teillet, 81103 Albi Cedex 09, France

J. Heat Transfer 125(6), 1017-1026 (Nov 19, 2003) (10 pages) doi:10.1115/1.1597611 History: Received December 26, 2002; Revised May 12, 2003; Online November 19, 2003
Copyright © 2003 by ASME
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References

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El Khatib,  H., and Javelas,  R., 1998, “Etude de deux cas d’écoulement thermoconvectifs le long d’une plaque plane verticale uniformément chauffée dans une cavité,” Rev. Gen. Therm., 37(4), pp. 295–303.
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Cuniasse–Langhans, I., 1998, “Evaluation par méthode inverse de la distribution de flux de chaleur pariétaux le long d’une plaque plane verticale en convection naturelle,” Ph.D. thesis, INSA of Toulouse, France.
Cuniasse–Langhans,  I., Trombe,  A., Dumoulin,  J., and Begue,  M., 2001, “Efficiency of an Inverse Method to Determine Natural Convection Heat Transfer,” Numerical Heat Transfer, Part B, 39(6), pp. 603–615.
Walton, G. N., 1980, “A New Algorithm for Radiant Interchange in Room Load Calculations,” ASHRAE Trans., pp. 190–208.
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Taler,  J., 1992, “Nonlinear Steady-State Inverse Heat Conduction Problem With Space-Variable Boundary Conditions,” ASME J. Heat Transfer, 114, pp. 1048–1051.
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Figures

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Study of the impact of the solar patch on the convective heat transfer
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Principle of the direct method
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Enclosure diagram in perspective
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Vertical section of the active plate
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Diagram of the radiative heat source
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Normalized representation ratio of thermocouples buried in the resin
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Theoretical division of the active plate
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Division of the active plate into components and location of the thermocouple sensors (•) inside the lighted area
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Experimental temperature variations of thermocouples located inside the lighted area
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Conductive heat flux variations for 7.4<ΔT<8.3°C
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Radiative heat flux variations for 7.4<ΔT<8.3°C
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Convective heat flux variations for 7.4<ΔT<8.3°C
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Convective heat exchange coefficient values for component 4
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Convective heat exchange coefficient values for component 5
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Convective heat exchange coefficient values for component 6
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Convective heat exchange coefficient values for component 7
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Convective heat exchange law for the total lighted area
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Comparison of the inverse method law with laws of the first type
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Comparison of the inverse method law with laws of the second type

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