An experimental study of the development of a supersonic zone near the leading edge of an airfoil oscillating in subsonic flow

1983 ◽  
Author(s):  
M. KATARY
Keyword(s):  
Experimental Study ◽  
Subsonic Flow ◽  
Leading Edge ◽  
Supersonic Zone

Experimental study of heat transfer in the boundary layer of a flat plate with the impact of weak shock waves on the leading edge

2020 ◽  
Author(s):  
V. L. Kocharin ◽  
A. A. Yatskikh ◽  
D. S. Prishchepova ◽  
A. V. Panina ◽  
Yu. G. Yermolaev ◽  
...  
Keyword(s):  
Heat Transfer ◽  
Boundary Layer ◽  
Experimental Study ◽  
Shock Waves ◽  
Flat Plate ◽  
Leading Edge ◽  
Weak Shock ◽  
The Impact

Flow Control for an Airfoil with Leading-Edge Rotation: An Experimental Study

2000 ◽  
Vol 37 (4) ◽  
pp. 617-622 ◽  
Author(s):  
Ahmed Z. Al-Garni ◽  
Abdullah M. Al-Garni ◽  
Saad A. Ahmed ◽  
Ahmet Z. Sahin
Keyword(s):  
Experimental Study ◽  
Flow Control ◽  
Leading Edge

An Experimental Study of Local Wall Shear Stress, Surface Static Pressure, and Flow Visualization Upstream, Alongside, and Downstream of a Blade Endwall Corner

1991 ◽  
Vol 113 (4) ◽  
pp. 626-632 ◽  
Author(s):  
A. K. Abdulla ◽  
R. K. Bhargava ◽  
R. Raj
Keyword(s):  
Experimental Study ◽  
Shear Stress ◽  
Wall Shear Stress ◽  
Flow Visualization ◽  
Static Pressure ◽  
Leading Edge ◽  
Chord Length ◽  
Corner Region ◽  
Wall Shear ◽  
Blade Leading Edge

The experimental study reported in this paper was performed to acquire information on the distribution of wall shear stress and surface static pressure in a blade endwall corner. The blade endwall corner region investigated was divided into three sections: 0.4 chord length upstream of the blade leading edge, inside the endwall corner region, and one chord length downstream of the blade trailing edge. The maximum increases in the values of wall shear stress were found to exist on the endwall, in the corner region, between the blade leading edge and the location of maximum blade thickness (≈ 140 percent maximum increase, compared to its far upstream value, at x/D = 6). Surface flow visualization defined the boundaries of the vortex system and provided information on the direction and magnitude of the wall shear stress. The acquired results indicated that the observed variations of wall shear stress and surface static pressure were significantly influenced by the interaction of secondary flows with pressure gradients induced by the presence of blade curvature.

scholarly journals Experimental study of weak shock waves influence on the supersonic boundary layer of the flat plate model

2019 ◽  
Vol 196 ◽  
pp. 00018 ◽  
Author(s):  
Vasiliy Kocharin ◽  
Aleksandr Kosinov ◽  
Yuriy Yermolayev ◽  
Nikolay Semionov
Keyword(s):  
Boundary Layer ◽  
Experimental Study ◽  
Shock Waves ◽  
Flat Plate ◽  
Leading Edge ◽  
Weak Shock ◽  
Supersonic Boundary Layer ◽  
Complex Flow ◽  
Complex Flow Structure ◽  
Constant Temperature Anemometer

The experimental study of the effect of weak shock waves on the supersonic boundary layer of the flat plate with a blunt leading edge (the radius of bluntness was r = 2.5 mm) with Mach number M = 2.5 and zero angle of attack was carried out. The measurements were carried out using the constant temperature anemometer. The paper presents a complex flow structure on the surface of the model. High-intensity peaks were found in the regions of the disturbed flow. Also the spectral analysis of perturbations was performed. It is found that the supersonic boundary layer on a flat plate is very sensitive to the effect of weak shock waves.

scholarly journals Experimental study of the laminar-turbulent transition on models of wings with subsonic and supersonic leading edge at M = 2

2019 ◽  
Vol 1404 ◽  
pp. 012097 ◽  
Author(s):  
N V Semionov ◽  
Yu G Yermolaev ◽  
A D Kosinov ◽  
V L Kocharin ◽  
A V Panina ◽  
...  
Keyword(s):  
Experimental Study ◽  
Leading Edge ◽  
Turbulent Transition ◽  
Laminar Turbulent Transition

An experimental study of an airfoil with a bio-inspired leading edge device at high angles of attack

2017 ◽  
Vol 26 (9) ◽  
pp. 094008 ◽  
Author(s):  
Boris A Mandadzhiev ◽  
Michael K Lynch ◽  
Leonardo P Chamorro ◽  
Aimy A Wissa
Keyword(s):  
Experimental Study ◽  
Leading Edge ◽  
High Angles Of Attack
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