Turbulent Boundary Layer Separation Induced By Three Dimensional Protuberances
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Turbulent Boundary-layer Separation Induced by Three-dimensional Protuberances
Author | : E. F. Lucero |
Publisher | : |
Total Pages | : 74 |
Release | : 1970 |
Genre | : |
ISBN | : |
The report presents the results of an experimental investigation on the extent of separation of a turbulent boundary layer due to cylindrical protuberances, square prisms, and triangular prisms mounted on a flat plate. The effect of the separated flow on the pressure distribution along the centerline of the plate and on the surface of the attached protuberances is shown. The widths of the protuberances were 0.6 and 1.0 inch, and the ratio of protuberance height to boundary-layer thickness, h/sigma, ranged from 0.3 to 4.4. The test Mach number was 2.17, and the unit Reynolds number was 3,000,000/ft. Results from the experiment indicate that: (1) when h/sigma, the extend of separation is dependent on protuberance height and on the diameter of the cylinder or the breadth of the square prism, but when h/sigma
Investigation of Small Surface Protuberances Upstream of Turbulent Boundary Layer Separation
Author | : Robert H. Korkegi |
Publisher | : |
Total Pages | : 28 |
Release | : 1976 |
Genre | : Aerodynamics, Supersonic |
ISBN | : |
Turbulent Boundary-layer Separation Induced by Flares on Cylinders at Zero Angle of Attack
Author | : Donald M. Kuehn |
Publisher | : |
Total Pages | : 32 |
Release | : 1961 |
Genre | : Noses (Space vehicles) |
ISBN | : |
Laminar and Turbulent Separation Including Three-dimensional Effects
Author | : Von Karman Institute for Fluid Dynamics |
Publisher | : |
Total Pages | : 254 |
Release | : 1974 |
Genre | : Aerodynamics |
ISBN | : |
Studies in Three-dimensional Turbulent Boundary Layer Separation from Smooth Surfaces
Author | : Spyridon G. Lekoudis |
Publisher | : |
Total Pages | : |
Release | : 1983 |
Genre | : Navier-Stokes equations |
ISBN | : |
Studies in the Three-dimensional Turbulent Boundary Layer Separation from Smooth Surfaces
Author | : Spyridon G. Lekoudis |
Publisher | : |
Total Pages | : 452 |
Release | : 1985 |
Genre | : Navier-Stokes equations |
ISBN | : |
The Structure of Three-dimensional Separated Flows in Obstacle-boundary Layer Interactions
Author | : Raymond Sedney |
Publisher | : |
Total Pages | : 64 |
Release | : 1975 |
Genre | : Boundary layer |
ISBN | : |
The subject is investigated with flow visualization techniques; the turbulent boundary layer on the wall of a continuous supersonic wind tunnel is used. Sizeable separated flow regions can be studied since the wall width is 38cm and the boundary layer is typically 2.5cm thick. The large scale of the experiment is required to resolve the fine details of the flow structure. The flow visualization techniques are discussed. The structure of the separated flow upstream of the obstacle is seen to change with relatively small changes in Reynolds number R; the number of vortices varies from 6 to 4 to 2 as R changes. Data are presented for large and small protuberances, but the latter are emphasized.
Three-dimensional Turbulent Boundary Layers
Author | : O. Sendstad |
Publisher | : |
Total Pages | : 130 |
Release | : 1992 |
Genre | : Simulation methods |
ISBN | : |
Experimental Study of a Three-dimensional Shear-driven Turbulent Boundary Layer with Streamwise Adverse Pressure Gradient
Author | : David Michael Driver |
Publisher | : |
Total Pages | : 268 |
Release | : 1989 |
Genre | : Boundary layer |
ISBN | : |