Thermal Turbulent Boundary Layer Under Strong Adverse Pressure Gradient Near Separation

[+] Author and Article Information
N. Afzal

International Centre for Theoretical Physics, 34100 Trieste, Italy

J. Heat Transfer 104(3), 397-402 (Aug 01, 1982) (6 pages) doi:10.1115/1.3245106 History: Received February 03, 1981; Online October 20, 2009


The problem of the thermal turbulent boundary layer under the influence of strong adverse pressure gradients near separation is analysed by the method of matched asymptotic expansions. The limit corresponding to the neighborhood of separation, as formulated by Afzal [3], is employed. The thermal boundary layer problem is analysed using the appropriate inner and outer expansions (both above the thermal wall layer). It is found by matching that there exists an inertial sublayer where temperature distribution obeys the inverse half power laws. The comparison of the theory with the measurement shows that the slope and intercept of the wall (inner) law may be regarded as universal numbers, whereas the intercept of outer law shows a linear dependence on τw /δpx .

Copyright © 1982 by ASME
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