The Response of a Turbulent Boundary Layer to a Double Step-Change in a Wall Heat Flux

[+] Author and Article Information
J. Andreopoulos

Sonderforschungsbereich 80, University of Karlsruhe, West Germany

J. Heat Transfer 105(4), 841-845 (Nov 01, 1983) (5 pages) doi:10.1115/1.3245671 History: Received October 14, 1982; Online October 20, 2009


Extensive measurements were made of the response of a turbulent boundary layer to a double step change of wall heat flux. The measurements include mean temperature and velocity as well as temperature-velocity correlations up to third order occurring in the ϑ2 and vϑ transport equations together with the skewness and flatness of temperature fluctuations. Two thermal layers start to develop within the primary boundary layer due to the change in heat flux at boundary. These layers are characterized with different growth rates which depend on the wall heat flux. Most of the changes in the downstream stations take place inside the second thermal layer.

Copyright © 1983 by ASME
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