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The compressible inviscid leading-edge vortex
Journal of Fluid Mechanics, 1965The conically symmetric solution of the Eulerian equations of an incompressible fluid obtained by Hall, thought to be descriptive of flow properties in a leading-edge vortex, is generalized to include the effects of compressibility.
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Three-Dimensional Substructure in a Leading Edge Vortex
41st AIAA Fluid Dynamics Conference and Exhibit, 2011High pitch rate manoeuvres have been studied in great depth in recent decades, in respect to rotor dynamic stall and, more recently, in understanding bird and insect flight with view to application in biomimetic micro air vehicles (MAVs). The flow topology arising from such unsteady airfoil movement is complex.
Abel-John Buchner +2 more
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Control of leading edge vortex breakdown by blowing
26th Aerospace Sciences Meeting, 1988An investigation into the effects of using a jet of air to control the vortex breakdown position on a 70 degree delta wing is presented. The specific objectives focused on optimizing the blowing positions in terms of maximum lift increments obtained for minimum blowing rates.
K. VISSER, K. IWANSKI, R. NELSON, T. NG
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On leading edge vortex and its control
16th Atmospheric Flight Mechanics Conference, 1989A simple model for the leading edge vortex and a postulation for the existence of a critical vorticity concentration above which a stable leading edge vortex cannot be maintained were proposed. Using the model and postulation, various aspects of vortex control by blowing were discussed.
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Computation and visualization of leading edge vortex flows
Computing Systems in Engineering, 1990The modeling of vortical flows is a continuing requirement for the design and analysis of flight vehicles. In this paper, the computation of leading edge vortices is considered. The solution of the laminar, thin-layer Navier-Stokes equations for a transonic delta wing is presented as a representative example. Issues relating to the visualization of the
E.M. Murman, T.M. Becker, D. Darmofal
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Control effect of micro vortex generators on leading edge of attached cavitation
The Physics of Fluids, 2019In this study, we investigate the effects of micro vortex generators (VGs) installed close to the leading edge of a quasi-two-dimensional NACA0015 hydrofoil under cavitating and non-cavitating conditions.
S. Schmidt, D. Likhachev
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International Communications in Heat and Mass Transfer, 2019
To compare the behavior of different cooling methods for gas turbine blade leading edge, configurations of impingement cooling, vortex cooling and double vortex cooling are established. The coolant chamber is specially introduced to make models closer to
Xiaojun Fan +3 more
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To compare the behavior of different cooling methods for gas turbine blade leading edge, configurations of impingement cooling, vortex cooling and double vortex cooling are established. The coolant chamber is specially introduced to make models closer to
Xiaojun Fan +3 more
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Numerical simulation of leading-edge vortex flows
17th Fluid Dynamics, Plasma Dynamics, and Lasers Conference, 1984Steady flowfields describing respectively the distinguished structure for subsonic, sonic, and supersonic leading-edge flow about a thin delta wing at angle of attack in a supersonic freestream are calculated numerically. Solutions of the steady three-dimensional compressible laminar Navier-Stokes equations are obtained by time integration.
Donald P. Rizzetta, Joseph S. Shang
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Vortex separation above delta leading edges.
Journal of Aircraft, 1967and that the jet flow would attach at the inlet lip. The inspections of Fig. 4 shows that the round lip, created by the jet flow, extended well inside the inlet lip and restricted the inlet flow area. Thus, the pressure recovery improvements that might have been realized as the result of rounding the lip were offset by higher pressure losses associated
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Size effect in insect flight: leading-edge vortex, trailing-edge vortex and tip vortex
Journal of Biomechanics, 2006H. Liu, H. Aono, Y. Inada, W. Shyy
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