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Heat Transfer Research
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ISSN Imprimer: 1064-2285
ISSN En ligne: 2162-6561

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Heat Transfer Research

DOI: 10.1615/HeatTransRes.v40.i5.30
pages 391-398

Experimental Investigation of Opposing Turbulent Mixed Convection Heat Transfer in an Inclined Flat Channel for Unstable Density Stratification.
2. Inclination Angle Effect on Heat Transfer

Robertas Poskas
Lithuanian Energy institute; Kaunas Univerity of Technology, Kaunas, Lithuania
Donatas Sabanskis
Lithuanian Energy Institute, Branduolinës inzinerijos problemø laboratorija, Breslaujos str. 3, LT-44403 Kaunas, Lithuania

RÉSUMÉ

Experimental investigations of heat transfer for an inclination angle φ = 30° (from the horizontal position) and analysis of the effect of flat channel inclination on heat transfer in a flat channel with bottom wall heating (unstable density stratification) for turbulent mixed convection opposing flow conditions have been performed in the regions of Re = 4·103−6.6·1044 and Grq = 4.4·107−7.6·1010. The presented data and results supplement the data previously given in this journal for the case of mixed convection. These experimental data are compared to the previously obtained experimental data in an inclined flat channel (φ = 60° from the horizontal position), when the bottom channel wall is heated.