Reference enthalpy method developed from solutions of the boundary-layer equations

Meador, W. E. and Smart, M. K. (2005) Reference enthalpy method developed from solutions of the boundary-layer equations. AIAA Journal, 43 1: 135-139. doi:10.2514/1.2656

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Author Meador, W. E.
Smart, M. K.
Title Reference enthalpy method developed from solutions of the boundary-layer equations
Journal name AIAA Journal   Check publisher's open access policy
ISSN 0001-1452
Publication date 2005-01-01
Sub-type Article (original research)
DOI 10.2514/1.2656
Open Access Status File (Author Post-print)
Volume 43
Issue 1
Start page 135
End page 139
Total pages 5
Place of publication Reston
Publisher Amer Inst Aeronaut Astronaut
Language eng
Subject 290299 Aerospace Engineering not elsewhere classified
Abstract A simple average of local enthalpy over the velocity profile is proposed as the proper definition of reference enthalpy for the purpose of quasi-one-dimensional treatment of compressible boundary layers. Use of Van Driest's nearly exact solutions of the laminar boundary-layer equations shows that this definition produces Eckert's reference enthalpy formulation for the special case of an adiabatic wall. For surfaces other than adiabatic, either Eckert's form should be replaced by that of Young and Janssen, or the coefficient in Eckert's viscous heating term should be slightly modified. A similar analysis was conducted for turbulent flows using Whitfield and High's simplified solutions of the turbulent boundary-layer equations. Dorrance's derivation of reference quantities is also addressed. This work provides a theoretical basis for the empirical reference enthalpy formulas of Eckert and others and supplies practical expressions for the reference enthalpy of both laminar and turbulent compressible boundary layers.
Keyword Engineering, Aerospace
Wall
Q-Index Code C1

Document type: Journal Article
Sub-type: Article (original research)
Collections: Excellence in Research Australia (ERA) - Collection
School of Mechanical & Mining Engineering Publications
 
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Created: Sat, 29 Mar 2008, 01:27:50 EST