Physics – Fluid Dynamics
Scientific paper
1997-05-15
J. of Fluids Engineering 120 (1998) 626
Physics
Fluid Dynamics
18 pages Latex and 5 ps-figures
Scientific paper
A problem of great concern in aviation and submarine propulsion is the control of the boundary layer and, in particular, the methods to extend the laminar region as a means to decrease noise and fuel consumption. In this paper we study the flow of air along an airfoil when a layer of ionized gas and a longitudinal electric field are created in the boundary layer region. By deriving scaling solutions and more accurate numerical solutions we discuss the possibility of achieving significant boundary layer control for realistic physical parameters. Practical design formulas and criteria are obtained. We also discuss the perspectives for active control of the laminar-to-turbulent transition fluctuations by electromagnetic field modulation.
Dente Joaquim A.
Mendes Rui Vilela
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