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RESEARCH PAPERS

Singular Parabolic Partial-Differential Equations That Arise in Impulsive Motion Problems

[+] Author and Article Information
D. B. Ingham

Department of Applied Mathematical Studies, The University of Leeds, Leeds, Yorkshire, England

J. Appl. Mech 44(3), 396-400 (Sep 01, 1977) (5 pages) doi:10.1115/1.3424090 History: Received December 01, 1976; Revised March 01, 1977; Online July 12, 2010

Abstract

The thermal boundary layer over a semi-infinite flat plate is investigated. For time t < 0 there is the Blasius boundary layer and no thermal boundary layer. At t = 0, a temperature boundary layer is initiated without altering the velocity and the subsequent temperature boundary layer is studied for all time. The resulting linear, singular parabolic partial differential equation is solved using an efficient numerical method. Numerical results for several values of the Prandtl number are compared with analytical and numerical results obtained by previous authors. Because of the large interest shown recently in impulsive problems which result in the solution of singular parabolic equations the method is extended to study some of these problems. In two of the examples considered the governing equations are nonlinear.

Copyright © 1977 by ASME
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