Three Dimensional Laminar Boundary Layer Transition On A Sharp 8 Cone At Mach
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Author | : V. DiCristina |
Publisher | : |
Total Pages | : 8 |
Release | : 1969 |
Genre | : Boundary layer |
ISBN | : |
Download Three-dimensional Laminar Boundary Layer Transition on a Sharp 8° Cone at Mach Book in PDF, Epub and Kindle
Author | : John C. Adams (Jr.) |
Publisher | : |
Total Pages | : 124 |
Release | : 1971 |
Genre | : Aerodynamics, Hypersonic |
ISBN | : |
Download Three-dimensional Laminar Boundary-layer Analysis of Upwash Patterns and Entrained Vortex Formation on Sharp Cones at Angle of Attack Book in PDF, Epub and Kindle
Application of three-dimensional inviscid and viscous (laminar boundary layer) analyses for cold wall hypersonic flows over sharp cones at incidence is presented relative to experimental data, showing surface upwash angles and entrained vortex formation leading to crossflow-induced boundary-layer transition. Three-dimensional neutral inviscid stability theory for stationary disturbances is used to calculate the angular orientation of the entrained vortices in the boundary layer while a maximum crossflow Reynolds number concept is applied for correlation of the onset to vortex formation due to crossflow instability.
Author | : J. Leith Potter |
Publisher | : |
Total Pages | : 36 |
Release | : 1975 |
Genre | : Boundary layer |
ISBN | : |
Download Boundary-layer Transition on Cones Near Mach One in an Aeroballistic Range Book in PDF, Epub and Kindle
The feasibility of determining Reynolds numbers of boundary layer transition on sharp, 10-deg, semiangle cones at slightly supersonic free-stream Mach numbers, 1.04 = or
Author | : |
Publisher | : |
Total Pages | : 434 |
Release | : 1972 |
Genre | : |
ISBN | : |
Download NASA Technical Note Book in PDF, Epub and Kindle
Author | : John B. Peterson |
Publisher | : |
Total Pages | : 100 |
Release | : 1969 |
Genre | : Boundary layer |
ISBN | : |
Download Boundary-layer Velocity Profiles Downstream of Three-dimensional Transition Trips on a Flat Plate at Mach 3 and 4 Book in PDF, Epub and Kindle
Boundary layer velocity profiles downstream of three dimensional transition trips on flat plates at Mach 3 and 4.
Author | : Michael C. Fischer |
Publisher | : |
Total Pages | : 76 |
Release | : 1970 |
Genre | : Aerodynamics |
ISBN | : |
Download An Experimental Investigation of Boundary-layer Transition on a 10 ̊half-angle Cone at Mach 6.9 Book in PDF, Epub and Kindle
Boundary layer transition on nose cones at hypersonic speeds.
Author | : Roger L. Kimmel |
Publisher | : |
Total Pages | : 46 |
Release | : 1993 |
Genre | : Aerodynamics, Hypersonic |
ISBN | : |
Download The Effect of Pressure Gradients on Transition Zone Length in Hypersonic Boundary Layers Book in PDF, Epub and Kindle
Boundary layer transition was measured in zero, favorable, and adverse pressure gradients at Mach 8 using heat transfer. Models consisted of 7 degrees half angle forecones 0.4826 m long, followed by flared or ogive aft bodies 0.5334 m long. The flares and ogives produced constant pressure gradients. For the cases examined, favorable pressure gradients delay transition and adverse pressure gradients promote transition, but transition zone lengths are shorter in favorable pressure gradient. Results of the effect of adverse pressure gradient on transition zone lengths were inconclusive.
Author | : Albert L. Braslow |
Publisher | : |
Total Pages | : 44 |
Release | : 1959 |
Genre | : Numerical analysis |
ISBN | : |
Download Effect of Distributed Three-dimensional Roughness and Surface Cooling on Boundary-layer Transition and Lateral Spread of Turbulence at Supersonic Speeds Book in PDF, Epub and Kindle
Author | : Mark Vladimir Morkovin (|d) |
Publisher | : |
Total Pages | : 152 |
Release | : 1969 |
Genre | : Aerodynamics, Hypersonic |
ISBN | : |
Download Critical Evaluation of Transition from Laminar to Turbulent Shear Layers with Emphasis on Hypersonically Traveling Bodies Book in PDF, Epub and Kindle
Author | : |
Publisher | : |
Total Pages | : 108 |
Release | : 1986 |
Genre | : |
ISBN | : |
Download Hypersonic Laminar Boundary Layer Transition. Part 1. Nosetip Bluntness Effects on Cone Frustum Transition. Part 2. Mach 6 Experiments of Transition on a Cone at Angle of Attack Book in PDF, Epub and Kindle
The effects of nosetip bluntness on cone frustrum boundary layer transition were investigated by conducting hypersonic wind tunnel experiments. Frustrum transition Reynolds numbers were found to have large variations within the entropy layer swallowing region. Investigation results indicated that several nosetip blunting effects were competing for the dominant role in the frustrum transition process and it was speculated that the large variations in transition Reynolds number were associated with the shifting of dominant roles. Based upon these studies, dominant nosetip bluntness effects are tentatively identified with three regions of the entropy layer. Transition movement and patterns on the frustrum of a cone at small angles of attack were investigated at a Mach number of 5.9, using an 8-deg half angle cone with both sharp and blunt nosetips. Small angles of attack produced large asymmetries in the frustrum transition pattern for both sharp and blunt tipped configurations. For the configurations with nosetip bluntness most of the frustrum transition asymmetry occurred between meridian angles of 60 and 120 deg. Data obtained with simulated laminar ablated nosetips were generally representative of what would be expected with a larger spherically blunt nosetip. Keywords: Boundary layer transition; Angle of attack.