Get 20M+ Full-Text Papers For Less Than $1.50/day. Start a 14-Day Trial for You or Your Team.

Learn More →

Nonlinear effects of pulsed periodic energy supply on shock wave structure of transonic flow around airfoils

Nonlinear effects of pulsed periodic energy supply on shock wave structure of transonic flow... Abstract The work deals with an investigation of possibilities of controlling the aerodynamic characteristics of airfoils with the aid of external local pulsed-periodic energy supply at transonic flight regimes. The alteration of flow structure near a symmetric airfoil and its wave drag has been studied on the basis of a numerical solution of two-dimensional nonstationary gas dynamics equations versus the energy supply period, the localization and shape of the energy supply zone. The energy supply upstream of the closing shock in the immediate proximity of the contour in the zones extended along it is found to result in a considerable reduction of the profile wave drag. The nature of such a drag reduction is elucidated. The existence of a limiting frequency of energy supply is established. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Thermophysics and Aeromechanics Springer Journals

Nonlinear effects of pulsed periodic energy supply on shock wave structure of transonic flow around airfoils

Loading next page...
 
/lp/springer-journals/nonlinear-effects-of-pulsed-periodic-energy-supply-on-shock-wave-Ady03R9nW7
Publisher
Springer Journals
Copyright
2006 S.M. Aulchenko, V.P. Zamuraev, and A.P. Kalinina
ISSN
0869-8643
eISSN
1531-8699
DOI
10.1134/S0869864306020028
Publisher site
See Article on Publisher Site

Abstract

Abstract The work deals with an investigation of possibilities of controlling the aerodynamic characteristics of airfoils with the aid of external local pulsed-periodic energy supply at transonic flight regimes. The alteration of flow structure near a symmetric airfoil and its wave drag has been studied on the basis of a numerical solution of two-dimensional nonstationary gas dynamics equations versus the energy supply period, the localization and shape of the energy supply zone. The energy supply upstream of the closing shock in the immediate proximity of the contour in the zones extended along it is found to result in a considerable reduction of the profile wave drag. The nature of such a drag reduction is elucidated. The existence of a limiting frequency of energy supply is established.

Journal

Thermophysics and AeromechanicsSpringer Journals

Published: Jun 1, 2006

References