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ISSN Online: 2377-424X

International Heat Transfer Conference 5
September, 3-7, 1974, Tokyo, Japan

STRUCTURE OF TURBULENT HEAT TRANSFER UNDER THE INFLUENCE OF FIOW ACCELERATION

Get access (open in a dialog) DOI: 10.1615/IHTC5.1870
pages 114-118

摘要

A reverse transition to the laminar laws of heat transfer is suggested by the data of experiments on a turbulent boundary layer on a plate under the influence of high acceleration of the flow. Characteristic changes in the distribution of the mean and fluctuation values of velocity and temperature indicate an increase of the region of viscous flow at the wall, a decrease in turbulent intermittance, though with a preserved structure of eddy flow. The experiments were performed 1n flows of air and transformer oil in the range of Prandtl number from 0.7 to 100 and that of pressure gradient K = (ν/u2)(du/dx) ≤ 1.3×lO−6.