boundary layer transition
Influence of boundary layer transition on the trajectory optimisation of a reusable launch vehicle
... the transition from laminar to turbulent flow on its surface as it descends through the ...roughness-induced boundary layer transition at hypersonic speeds over arbitrary ...of boundary ...
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Experimental Investigation of the Boundary Layer Transition on a Laminar Airfoil Using Infrared Thermography
... In aerodynamic wind tunnel testing, it is sometimes necessary to artificially trigger the acceleration of the turbulence in those cases where the measurement results are significantly affected by the existing laminar ...
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Predicting Boundary Layer Transition on X 51A Forebody with kT kL (omega) Transition Model
... now, boundary layer transition prediction methods include high-precision numerical simulations, such as direct numerical simulation (DNS) [1] and large eddy simulation (LES) [2], nonlinear ...
5
Bypass Boundary Layer Transition on Flat Plate by Adverse Pressure Gradient
... Abstract. Bypass boundary layer transition in flows on flat plate by adverse pressure gradient was investigated experimentally. It was measuered cases with combination of adverse pressure gradient by ...
5
Laminar Turbulent Boundary Layer Transition Imaging Using IR Thermography
... a thin insulating layer in order to hold a strong tempera- ture gradient. Additionally, the coating must have as low of a reflectivity in the IR band as possible. This is par- ticularly important in flight where ...
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Turbulent flow phenomena and boundary layer transition at the circular arc leading edge of an axial compressor stator blade
... Secondary flows are seen as undesirable flow features and are brought about by viscous effects. Near the blade end walls, where the suction surface boundary layers often undergo a local separation upon interaction ...
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Boundary Layer Transition on a Slender Cone in Hypervelocity Flow with Real Gas Effects
... quired. For the present study, this was done using the software package STABL, developed by the Candler group at the University of Minnesota. The outer flow for the boundary layer was determined by the ...
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Swept boundary layer transition
... the boundary layer integral parameters, where once more all plots are for unskewed traverses relative to the reference plane, ...the boundary layer – always within 30% of the boundary ...
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Global optimisation based control algorithms applied to boundary layer transition problems
... This paper is concerned with practical methods of delaying transition. There are a number of ways this can be achieved. For example, heating the surface will heat the fluid adjacent to it, and increase its ...
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Linear and nonlinear aspects of interactive boundary layer transition
... inar boundary layer is considered on a shorter lengthscale th an th a t of previous studies; see in particular Brown et al (1993), and Hall and Smith ...
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The Effect of Curvature on Boundary Layer Transition
... section we.re 0om:pleted oz:i tra?1si tion blil.. front or th$ sheEtt*e leading.[r] ...
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Boundary layer transition over rotating disks
... disk boundary layer at various locations and aligned correspondingly to face the azimuthal velocity component which was used as a reference velocity for the ...the boundary layer, in these ...
186
Unsteady boundary layer transition on axial compressor blades
... circumferential position of stator leading edge relative to IGV trailing edge axial distance from stator leading edge to probe axial distance from rotor leading edge to probe axial dista[r] ...
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CFD Simulation And Validation Of Aerodynamic Over Ahmed Model
... TITLE PAGE 2.1 Figure of Ahmed model 5 2.2 Boundary layer velocity gradient 10 2.3 Lamina/turbulent boundary layer transition 12 Low speed 2.4 Lamina/turbulent boundary layer transition [r] ...
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Experimental and computational investigation of flow about low aspect ratio ellipsoids at transcritical Reynolds numbers
... the transition region and the perturba- tions in the calculated surface streamlines show a very strong redirection of the flow in the normal and azmiuthal direction respectively near the start of transition ...
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Experimental and computational investigation of flow about low aspect ratio ellipsoids at transcritical Reynolds numbers
... premature boundary layer ...to boundary layer transition and the earlier transition on the suction side pro- viding a smaller distance over which these unwanted disturbances can ...
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Visualization of boundary layer separation and passive flow control on airfoils and bodies in wind-tunnel and in-flight experiments
... VSO10 test programme employed an outer wing segment, adopted for wind-tunnel height. The whole section features linear transition from Wortmann FX60-126 to FX61- 163 airfoil [2]; considering the tip itself, ...
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Numerical modelling of turbulent transition in complex geometries
... predict transition to turbu- ...of transition and then the transition is too ...the transition still requires explicit ...containing transition criteria implicitly, or as Menter, ...
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Detecting the location of the boundary layers in singular perturbation problems with general linear non-local boundary conditions
... ary layer, otherwise we have boundary layer in the related ...the boundary value problems includ- ing linear O.D.E with local boundary conditions as singular perturbation ...of ...
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Boundary-layer effects in liquid-layer flows
... small and are governed mainly by inviscid dynamics, and two thin viscous wall layers. The core flow suffers a simple lateral. displacement of the relative order o[r] ...
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