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Advances in Heat Transfer Engineering

ISSN:
1-56700-198-1 (Print)

NATURAL CONVECTIVE HEAT TRANSFER FROM ISOTHERMAL CUBOIDS

Ewa Radziemska
Gdansk University of Technology, Chemical Faculty, Department of Apparatus and Chemical Machinery, ul. Narutowicza 11/12, 80-952 Gdansk, Poland

Witold M. Lewandowski
Department of Chemical Apparatus and Machniery. Gdansk University of Technology, ul. Narutowicza 11/12, 80-952 Gdansk, Poland

Abstract

The paper presents results of theoretical and experimental investigations of the convective heat transfer from isothermal cuboid. The analytical solution was performed taking into account complete boundary layer length and the manner of its propagation around isothermal cuboid. It arises at horizontal bottom surface and grows on vertical lateral surface of the block. After changing its direction, the boundary layer occurs above horizontal surface faced up and next it is transformed into buoyant convective plume. To verify obtained theoretical solution the experimental study has been performed. The experiment was carried out for three possible positions of tested the same cuboid.