Author: Philip HallPublisher:
ISBN:
Category :
Languages : en
Pages : 40
Book Description
The Fully Nonlinear Development of Görtler Vortices in Growing Boundary Layers
Author: Philip HallGoertler Vortices in Growing Boundary Layers: The Leading Edge Receptivity Problem, Linear Growth and the Nonlinear Breakdown Stage
Author: Institute for Computer Applications in Science and EngineeringPublisher:
ISBN:
Category : Aerodynamics
Languages : en
Pages : 80
Book Description
Fully Nonlinear Goertler Vortices in Constricted Channel Flows and Their Effect on the Onset of Separation
Author: Institute for Computer Applications in Science and EngineeringPublisher:
ISBN:
Category :
Languages : en
Pages : 40
Book Description
Fully Nonlinear Development of the Most Unstable Goertler Vortex in a Three Dimensional Boundary Layer
Author: Institute for Computer Applications in Science and EngineeringPublisher:
ISBN:
Category :
Languages : en
Pages : 32
Book Description
IUTAM Symposium on Nonlinear Instability and Transition in Three-Dimensional Boundary Layers
Author: Peter W. DuckPublisher: Springer Science & Business Media
ISBN: 9400917007
Category : Science
Languages : en
Pages : 458
Book Description
Most fluid flows of practical importance are fully three-dimensional, so the non-linear instability properties of three-dimensional flows are of particular interest. In some cases the three-dimensionality may have been caused by a finite amplitude disturbance whilst, more usually, the unperturbed state is three-dimensional. Practical applications where transition is thought to be associated with non-linearity in a three- dimensional flow arise, for example, in aerodynamics (swept wings, engine nacelles, etc.), turbines and aortic blood flow. Here inviscid `cross-flow' disturbances as well as Tollmien-Schlichting and Görtler vortices can all occur simultaneously and their mutual non-linear behaviour must be understood if transition is to be predicted. The non-linear interactions are so complex that usually fully numerical or combined asymptotic/numerical methods must be used. Moreover, in view of the complexity of the instability processes, there is also a growing need for detailed and accurate experimental information. Carefully conducted tests allow us to identify those elements of a particular problem which are dominant. This assists in both the formulation of a relevant theoretical problem and the subsequent physical validation of predictions. It should be noted that the demands made upon the skills of the experimentalist are high and that the tests can be extremely sophisticated - often making use of the latest developments in flow diagnostic techniques, automated high speed data gathering, data analysis, fast processing and presentation.
Scientific and Technical Aerospace Reports
Author: Instability and Transition
Author: M.Y. HussainiPublisher: Springer Science & Business Media
ISBN: 1461234301
Category : Science
Languages : en
Pages : 462
Book Description
These two volumes contain the proceedings of the workshop on the Institute for Computer Instability and Transition, sponsored by Applications in Science and Engineering (ICASE) and the Langley Research Center (LaRC), during May 15 to June 9, 1989. The work shop coincided with the initiation of a new, focused research pro gram on instability and transition at LaRC. The objectives of the workshop were to (i) expose the academic community to current technologically important issues of instability and transition in shear flows over the entire speed range, (ii) acquaint the academic com munity with the unique combination of theoretical, computational and experimental capabilities at LaRC and foster interaction with these facilities, (iii) review current state-of-the-art and propose fu ture directions for instability and transition research, (iv) accelerate progress in elucidating basic understanding of transition phenomena and in transferring this knowledge into improved design methodolo gies through improved transition modeling, and (v) establish mech anisms for continued interaction. The objectives (i) to (iii) were of course immediately met. It is still premature to assess whether ob jectives (iv) and (v) are achieved. The workshop program consisted of tutorials, research presenta tions, panel discussions, experimental and computational demonstra tions, and collaborative projects.
The Inviscid Secondary Instability of Fully Nonlinear Longitudinal Vortex Structures in Growing Boundary Layers
Author: Institute for Computer Applications in Science and EngineeringPublisher:
ISBN:
Category :
Languages : en
Pages : 48
Book Description
Author: 
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