Approximate Solution—One-Dimensional Energy Equation for Transient, Compressible, Low Mach Number Turbulent Boundary Layer Flows

[+] Author and Article Information
J. Yang, J. K. Martin

Engine Research Center, Department of Mechanical Engineering, University of Wisconsin–Madison, Madison, WI 53706

J. Heat Transfer 111(3), 619-624 (Aug 01, 1989) (6 pages) doi:10.1115/1.3250727 History: Received January 26, 1988; Online October 20, 2009


Unsteady surface heat-flux and temperature profiles in the transient, compressible, low Mach number, turbulent boundary layer typically found in internal combustion engines have been determined by numerically integrating a linearized form of the one-dimensional energy equation. An empirical relation for μt /μ has been used to consider turbulent conductivity. Approximate solutions have been acquired by multiparameter fits to the numerical solutions. Comparisons of the approximate solutions with motored engine experiments show good agreement.

Copyright © 1989 by ASME
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