A Review Of Factors Affecting Boundary Layer Transition
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Author | : Albert L. Braslow |
Publisher | : |
Total Pages | : 36 |
Release | : 1966 |
Genre | : Aerodynamics, Supersonic |
ISBN | : |
Download A Review of Factors Affecting Boundary-layer Transition Book in PDF, Epub and Kindle
Author | : E. J. Preston |
Publisher | : |
Total Pages | : |
Release | : 1961 |
Genre | : |
ISBN | : |
Download Factors Affecting Boundary Layer Transition Book in PDF, Epub and Kindle
Author | : |
Publisher | : |
Total Pages | : 45 |
Release | : 1969 |
Genre | : |
ISBN | : |
Download BOUNDARY LAYER STABILITY AND TRANSITION. Book in PDF, Epub and Kindle
A review is given of boundary layer stability and transition. The normal modes procedures as they apply to boundary layers are briefly reviewed and the mechanism of instability is discussed. It is shown how normal modes results may be used to give guidance regarding the factors affecting transition. Some remarks are made about the prediction of transition and about the fixing of transition. It is concluded that the process of transition from laminar to turbulent flow remains unsolved. However, significant inroads into inroads into the understanding of transition are now possible because of our ability to do sophisticated theoretical and experimental studies of the stability of laminar boundary layers.
Author | : |
Publisher | : |
Total Pages | : 1384 |
Release | : 1971 |
Genre | : Aeronautics |
ISBN | : |
Download NASA Technical Note Book in PDF, Epub and Kindle
Author | : |
Publisher | : |
Total Pages | : 984 |
Release | : 1977 |
Genre | : Astronautics |
ISBN | : |
Download NASA Reference Publication Book in PDF, Epub and Kindle
Author | : J. R. Garratt |
Publisher | : Cambridge University Press |
Total Pages | : 340 |
Release | : 1994-04-21 |
Genre | : Mathematics |
ISBN | : 9780521467452 |
Download The Atmospheric Boundary Layer Book in PDF, Epub and Kindle
The book gives a comprehensive and lucid account of the science of the atmospheric boundary layer (ABL). There is an emphasis on the application of the ABL to numerical modelling of the climate. The book comprises nine chapters, several appendices (data tables, information sources, physical constants) and an extensive reference list. Chapter 1 serves as an introduction, with chapters 2 and 3 dealing with the development of mean and turbulence equations, and the many scaling laws and theories that are the cornerstone of any serious ABL treatment. Modelling of the ABL is crucially dependent for its realism on the surface boundary conditions, and chapters 4 and 5 deal with aerodynamic and energy considerations, with attention to both dry and wet land surfaces and sea. The structure of the clear-sky, thermally stratified ABL is treated in chapter 6, including the convective and stable cases over homogeneous land, the marine ABL and the internal boundary layer at the coastline. Chapter 7 then extends the discussion to the cloudy ABL. This is seen as particularly relevant, since the extensive stratocumulus regions over the subtropical oceans and stratus regions over the Arctic are now identified as key players in the climate system. Finally, chapters 8 and 9 bring much of the book's material together in a discussion of appropriate ABL and surface parameterization schemes in general circulation models of the atmosphere that are being used for climate simulation.
Author | : |
Publisher | : |
Total Pages | : 16 |
Release | : 1990 |
Genre | : |
ISBN | : |
Download A Brief Review of Some Mechanisms Causing Boundary Layer Transition at High Speeds Book in PDF, Epub and Kindle
Author | : A. L. Braslow |
Publisher | : |
Total Pages | : 13 |
Release | : 1960 |
Genre | : Boundary layer |
ISBN | : |
Download Review of the Effect of Distributed Surface Roughness on Boundary-layer Transition Book in PDF, Epub and Kindle
A discussion is presented on the transition phenomena associated with distributed roughness, a correlation of three-dimensional roughness effects at both subsonic and supersonic speeds, and the effect of laminar boundary-layer stability as influenced by heat transfer, pressure gradients, and boundary-layer control on the sensitivity of laminar flow to distributed roughness. Results indicate that the transition-triggering mechanism of three-dimensionaltype surface roughness appears to be the same at supersonic and subsonic speeds. In either case, a Reynolds number based on the height of the roughness and the local flow conditions at the top of the roughness can be used to predict with reasonable accuracy the height of threedimensional roughness required to cause premature transition. Neither the three-dimensional roughness Reynolds number nor the lateral spread of turbulence behind the roughness is changed to any important extent by increasing the laminar boundary-layer stability to theoretically small disturbances. Therefore, for a given stream Mach number and Reynolds number, surface cooling, boundary-layer suction, or a favorable pressure gradient will, in the presence of three-dimensional roughness, promote rather than delay transition. (Author).
Author | : |
Publisher | : |
Total Pages | : 712 |
Release | : 1988 |
Genre | : Aeronautics |
ISBN | : |
Download Scientific and Technical Aerospace Reports Book in PDF, Epub and Kindle
Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
Author | : United States. National Aeronautics and Space Administration Scientific and Technical Information Division |
Publisher | : |
Total Pages | : 2300 |
Release | : 1967 |
Genre | : Aeronautics |
ISBN | : |
Download NASA Scientific and Technical Reports Book in PDF, Epub and Kindle