Boundary Layer Separation
Control of shock-induced boundary layer separation at supersonic speeds
... Control of shock-induced boundary layer separation at supersonic speeds Cohen, Giel S. The copyright of this thesis rests with the author and no quotation from it or information derived from it may ...
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Numerical Investigation on the Delay of Boundary Layer Separation by Suction for NACA 4412
... local separation regions, boundary layer transition, turbulence and shock boundary layer ...through separation delay by suction at different slots, by flaps, by introducing bumps ...
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Turbulent boundary layer separation control using plasma actuator at Reynolds number 2000000
... turbulent boundary layer separation control at high Reynolds ...turbulent boundary, was carried out using particle image velocimetry (PIV) and laser Doppler velocimetry (LDV) in the ...
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Control of Laminar Boundary-Layer Separation Using Steady and Harmonic Vortex Generator Jets
... canonical separation bubbles on a flat-plate were carried out for investigating active flow control for a laminar separation bubble using vortex generator ...the separation bubbles when the same ...
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Visualization of boundary layer separation and passive flow control on airfoils and bodies in wind-tunnel and in-flight experiments
... Abstract: Infrared camera, Particle Image Velocimetry, smoke-wire, tuft filaments and oil-flow visualization techniques were used for wind-tunnel and in-flight investigation of boundary layer ...
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The onset of instability in unsteady boundary-layer separation
... In order to integrate the inviscid momentum equations (3.24) forward in time, a predictor-corrector method was used.. The pressure distribution at the current time [r] ...
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Experimental Investigation into Shock Induced Corner Boundary Layer Separation.
... the boundary layer does not have enough momentum to overcome the adverse pressure gradient imposed by the outer inviscid flow and starts decelerating past the shock ...The boundary layer ...
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Particle image velocimetry study of shock-induced turbulent boundary layer separation
... upstream boundary layer are essentially parallel to the floor until about 30 mm upstream of the ramp where they begin to deflect upward by the separation ...
202
Roughing up wings: boundary layer separation over static and dynamic roughness elements
... global separation, can thus also be ...a separation bubble—where the skin friction goes negative and then recovers to become positive again—at sufficiently large depths, but above some critical depth, linked ...
298
Analysis of Curvature Effects on Boundary Layer Separation and Turbulence Model Accuracy for Circulation Control Applications
... flow separation in high curvature regions with special attention to circulation control ...flow separation at locations where flap curvature ...the separation is equally a function of the flow ...
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Enabling Micro Synthetic Jet Actuators in Boundary Layer Separation Control Using Flow Instability
... laminar separation caused by adverse pressure gradient in a boundary layer is demonstrated by experimental results of profiles of mean and fluctuating .... Boundary layer properties are ...
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Laminar boundary layer separation and near wake flow for a smooth blunt body at supersonic and hypersonic speeds
... TYPICAL LAMINAR SUPERCRITICAL - SUBCRITICAL JUMPS... DISTANCE ALONG CYLINDER x/r.[r] ...
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An experimental investigation of the use of air jet vortex generators to control shock induced boundary layer separation
... Figure 6.23 shows that in terms of pressure recovery at the trailing edge, these round air jets were effective in delaying the onset of significant effects of separation, but were not as[r] ...
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Experimental investigation of supersonic laminar, two dimensional boundary layer separation in a compression corner with and without cooling
... The apparent sensitivity to model location within a given tunnel, and to tunnel conditions (unit Reynolds number, etc... Figure 45, Comparison with Laminar Theory..[r] ...
141
Active control of Boundary Layer Separation & Flow Distortion in Adverse Pressure Gradient Flows via Supersonic Microjets
... a separation bubble with recirculating ...the boundary in the same region where reverse flow field is seen in the streamwise velocity ...larger separation zones than the 40 m/s case discussed in this ...
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In thin flat plate, there are no pressure gradient in the boundary layer. Because of that, there can be no separation.
... the boundary layer will separate at one or both walls, with backflow, increased losses, and poor pressure ...airfoil boundary layer separation. Thus, the boundary layer ...
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Study of separation phenomenon in transonic flows produced by interaction between shock wave and boundary layer
... and boundary layer concerns separation phenome- ...of separation in transonic flow and that it is not any interaction between shock wave and boundary layer which can cause ...
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A two-layer model for the separation of inertial boundary currents'
... Journal of Marine Research [3 2 ,3 In the current, the relative vorticity is comparable to the planetary vorticity, and the inertial acceleration terms in the north-sout[r] ...
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Separation length in high-enthalpy shock/boundary-layer interaction
... on separation length using a double-wedge geometry and nitrogen test ...on separation length for a laminar nonreacting boundary layer and arbitrary viscosity ...for separation length of ...
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Effect of Vortex Generators on Corner Separation Caused by Shock Wave-Boundary-Layer Interaction
... flow separation, resulting from the interaction of a normal shock wave with a turbulent boundary layer in a duct at M = ...flow separation monotonically decreased as the vortex generators size ...
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