Approximate Analysis of Transient Laminar Boundary-Layer Development

[+] Author and Article Information
J. A. Schetz, Sin K. Oh

Aerospace Engineering Department, University of Maryland, College Park, Md.

J. Heat Transfer 90(4), 452-456 (Nov 01, 1968) (5 pages) doi:10.1115/1.3597541 History: Received April 29, 1968; Online August 25, 2011


Transient development of the boundary layer on a flat plate following the impulsive start of motion of the surrounding fluid is analyzed approximately. The Howarth-Dorodnitzin transformation and a Crocco Integral are used to relate the temperature field to the approximate velocity field which is obtained in a “constant density” plane. The solution for the velocity field is determined using the unsteady Momentum Integral equation with a new type of profile. Expressions for the boundary-layer development time and model surface temperature at the end of the development time are presented. Good agreement with a roughly determined experimental flow development time is achieved.

Copyright © 1968 by ASME
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