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ISSN Online: 2377-424X

ISBN Print: 0-89116-130-9

International Heat Transfer Conference 6
August, 7-11, 1978, Toronto, Canada

TURBULENT HEAT AND MASS TRANSFER IN ABRUPTLY CHANGED WALL BOUNDARY CONDITIONS

Get access (open in a dialog) DOI: 10.1615/IHTC6.70
pages 353-358

Sinopsis

This paper presents the results of theoretical and experimental investigation of heat- and mass-transfer in non-equilibrium turbulent boundary layer at various prehistory of the main flow development and abrupt changes of the surface boundary conditions.
It has been shown that the prehistory influence on heat transfer stops much earlier than the dynamic boundary layer completely relaxes.
The character of heat transfer may be explained in terms of a Seban flow model, if the significant non-similarity of temperature and velocity profiles is taken into consideration. The results on the porous film cooling effectiveness at various degree of flow turbulence ε = 1 + 7%, different length of porous region, under- and super-injections through it are grouped into unit dependence.