Power Balance in Aerodynamic Flows

A control volume analysis of the compressible viscous flow about an aircraft is performed, including integrated propulsors and flow-control systems. In contrast to most past analyses that have focused on forces and momentum flow, in particular thrust and drag, the present analysis focuses on mechani...

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Bibliographic Details
Published in:AIAA journal 2009-07, Vol.47 (7), p.1761-1771
Main Author: Drela, Mark
Format: Article
Language:English
Subjects:
Aerodynamics
Aerospace engineering
Air transportation and traffic
Aircraft
Applied sciences
Computational methods in fluid dynamics
Exact sciences and technology
Flow control
Fluid dynamics
Fundamental areas of phenomenology (including applications)
Ground, air and sea transportation, marine construction
Physics
Viscosity
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Summary:A control volume analysis of the compressible viscous flow about an aircraft is performed, including integrated propulsors and flow-control systems. In contrast to most past analyses that have focused on forces and momentum flow, in particular thrust and drag, the present analysis focuses on mechanical power and kinetic energy flow. The result is a clear identification and quantification of all the power sources, power sinks, and their interactions, which are present in any aerodynamic flow. The formulation does not require any separate definitions of thrust and drag, and hence it is especially useful for analysis and optimization of aerodynamic configurations that have tightly integrated propulsion and boundary-layer control systems. [PUBLICATION ABSTRACT]
ISSN:0001-1452
1533-385X
DOI:10.2514/1.42409