Author: Steven Philip Schneider
Publisher:
ISBN:
Category : Electronic dissertations
Languages : en
Pages : 374
Book Description
Effects of Controlled Three-dimensional Perturbations on Boundary Layer Transition
Author: Steven Philip Schneider
Publisher:
ISBN:
Category : Electronic dissertations
Languages : en
Pages : 374
Book Description
Publisher:
ISBN:
Category : Electronic dissertations
Languages : en
Pages : 374
Book Description
The Effects of Steady, Three-dimensional Perturbations in Boundary Layers
Author: Raymond Sedney
Publisher:
ISBN:
Category : Boundary layer
Languages : en
Pages : 56
Book Description
The primary purpose of this report is to survey the available information mainly experimental, on the subject. Most attention is given to the complex flow field resulting when a 3-D protuberance is introduced into a laminar boundary layer; less can be said about the turbulent case or 2-D protuberances because enough detailed, careful experiments have not been made. There are some features of the induced flow fields common to all speed ranges; applications range from flow in the atmospheric boundary layer to hypersonic vehicle problems. Some attempts to analyze the downstream flow are also summarized.
Publisher:
ISBN:
Category : Boundary layer
Languages : en
Pages : 56
Book Description
The primary purpose of this report is to survey the available information mainly experimental, on the subject. Most attention is given to the complex flow field resulting when a 3-D protuberance is introduced into a laminar boundary layer; less can be said about the turbulent case or 2-D protuberances because enough detailed, careful experiments have not been made. There are some features of the induced flow fields common to all speed ranges; applications range from flow in the atmospheric boundary layer to hypersonic vehicle problems. Some attempts to analyze the downstream flow are also summarized.
Validation of Three-dimensional Incompressible Spatial Direct Numerical Simulation Code
Author: Ronald D. Joslin
Publisher:
ISBN:
Category : Boundary layer
Languages : en
Pages : 56
Book Description
Publisher:
ISBN:
Category : Boundary layer
Languages : en
Pages : 56
Book Description
Scientific and Technical Aerospace Reports
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 704
Book Description
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 704
Book Description
A Review of the Effects of Steady, Three-dimensional Perturbations in a Laminar Boundary Layer
Author: R. Sedney
Publisher:
ISBN:
Category : Boundary layer
Languages : en
Pages : 38
Book Description
Publisher:
ISBN:
Category : Boundary layer
Languages : en
Pages : 38
Book Description
Review of the Effect of Distributed Surface Roughness on Boundary-layer Transition
Author: A. L. Braslow
Publisher:
ISBN:
Category : Boundary layer
Languages : en
Pages : 13
Book Description
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).
Publisher:
ISBN:
Category : Boundary layer
Languages : en
Pages : 13
Book Description
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).
Applied Mechanics Reviews
Author:
Publisher:
ISBN:
Category : Mechanics, Applied
Languages : en
Pages : 712
Book Description
Publisher:
ISBN:
Category : Mechanics, Applied
Languages : en
Pages : 712
Book Description
Government Reports Announcements & Index
Author:
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 658
Book Description
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 658
Book Description
Technical News Bulletin
Author:
Publisher:
ISBN:
Category : Technology
Languages : en
Pages : 20
Book Description
Publisher:
ISBN:
Category : Technology
Languages : en
Pages : 20
Book Description
A Study of Three-dimensional Effects in End-stage Boundary-layer Transition
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 398
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 398
Book Description