Problems of laminar-turbulent transition control in a boundary layer

Journal Article · Fri Mar 01 04:00:00 EST 1991 · Russian Journal of Theoretical and Applied Mechanics; (United States)

OSTI ID:5580669

Fedorov, A V; Levchenko, V I; Tumin, A M ^[1]

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1. Academy of Sciences of the USSR, Institute of Theoretical and Applied Mechanics, Novosibirsk (USSR) Moscow Physical-Technical Institute, (USSR)

The overview of laminar-turbulent transition control compares different methods of transition control for swept-wing streams. The types of unstable disturbances in boundary layer are listed, and flow stabilization is described in terms of small disturbances. The control of the transition zone is based on the description of background disturbances, their transition into instability waves, and their linear and nonlinear amplifications. Specific references cite the applications to Tollmien-Schlichting waves, crossflow instability near an aircraft's leading edge, and unstable disturbances in a boundary layer over a curved surface. Methods of active control or wave cancellation to deal with the problem are listed including localized periodic heating, the introduction of vibrations, or the use of suction-blowing. The results of the comparative overview are of interest to aircraft and other aerospace applications to reduce drag and improve fuel efficiency. 111 refs.

• OSTI ID: 5580669
• Journal Information: Russian Journal of Theoretical and Applied Mechanics; (United States), Journal Name: Russian Journal of Theoretical and Applied Mechanics; (United States) Vol. 1; ISSN RJTME; ISSN 1051-8045
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330600* -- Advanced Propulsion Systems-- Vehicle Design Factors
42 ENGINEERING
420400 -- Engineering-- Heat Transfer & Fluid Flow
AIRCRAFT
AIRFOILS
BOUNDARY LAYERS
DESIGN
ENERGY CONSUMPTION
FLUID FLOW
FUEL CONSUMPTION
LAMINAR FLOW
LAYERS
TRANSITION FLOW
TURBULENT FLOW