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TsAGI Science Journal

ISSN Print: 1948-2590
ISSN Online: 1948-2604

TsAGI Science Journal

DOI: 10.1615/TsAGISciJ.v42.i3.30
pages 321-344

PROBLEM OF INTERFERENCE OF AN OGIVAL BODY OF REVOLUTION WITH THE WIND-TUNNEL STING AND SPECIFIC FEATURES OF COMPUTING THIS PROBLEM

Sergey Mikhailovich Bosnyakov
Central Aerohydrodynamic Institute (TsAGI) 1, Zhukovsky str., Zhukovsky, 140180, Moscow region, Russia
Vladimir Viktorovich Vlasenko
Central Aerohydrodynamic Institute (TsAGI) 1, Zhukovsky str., Zhukovsky, 140180, Moscow region, Russia
Innokentii Aleksandrovich Kursakov
Central Aerohydrodynamic Institute (TsAGI), Zhukovsky Str. 1, Zhukovsky, 140180 Russia
Sergey Vladimirovich Mikhaylov
Central Aerohydrodynamic Institute (TsAGI) 1, Zhukovsky str., Zhukovsky, 140180, Moscow region, Russia
Jurgen Quest
European Transonic Aerodynamic Tunnel (ETW), Ernst-Mach-Strasse, 51147 Koln, Germany

ABSTRACT

A numerical problem of model-sting interference under wind-tunnel conditions is formulated. The computation speedup procedure is described, and test data that confirm its efficiency are presented. Possible methods of constructing the approximating computational grid are discussed. Particular attention is paid to the cavity in the model-sting junction region. Methods of organizing the procedure of computing an unsteady viscous flow in areas of strong interference are proposed. The model and conditions of its testing in the European Transonic Wind Tunnel (ETW) are described in detail. Experimental data are analyzed. The computed and experimental results are compared and the computational accuracy is evaluated. Flow fields are constructed and physical interpretations of the observed effects are given.


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