On the Three-Dimensional Structure of Boundary Layers Undergoing Transition to Turbulence PDF Download
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Author: William S. Saric
Publisher:
ISBN:
Category :
Languages : en
Pages : 34
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Book Description
Detailed experiments were performed for boundary layers undergoing transition to turbulence. The experiments utilized multiple hot wire anemometer techniques in combination with recently developed flow visualization and computational techniques. The use of a phase-correlated and conditionally sampled measurements permitted the study of the origin and evolution of the characteristic of transitional boundary layers. Fundamental transition mechanisms and the receptivity of the boundary layer to external disturbances that led to transition were studied.
Author: William S. Saric
Publisher:
ISBN:
Category :
Languages : en
Pages : 34
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Book Description
Detailed experiments were performed for boundary layers undergoing transition to turbulence. The experiments utilized multiple hot wire anemometer techniques in combination with recently developed flow visualization and computational techniques. The use of a phase-correlated and conditionally sampled measurements permitted the study of the origin and evolution of the characteristic of transitional boundary layers. Fundamental transition mechanisms and the receptivity of the boundary layer to external disturbances that led to transition were studied.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 13
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Book Description
Experiments were performed of boundary layers undergoing instabilities and transition to turbulence. The experiments used multiple hotwire anemometer techniques to study the origin and evolution of the characteristic large-scale structures of transitional boundary layers. Fundamental transition mechanisms, the control of random background disturbances, and the receptivity of the boundary layer to external disturbances that lead to transition were studied. This work lays the foundation for more advanced work in boundary-layer transition and control with sound and 3-D roughness.
Author: Thorwald Herbert
Publisher:
ISBN:
Category :
Languages : en
Pages : 12
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Book Description
A unified theory of secondary instability in wall-bound shear flows has been developed. This theory rests on Floquet systems of stability equations and permits classification and quantitative analysis of different modes of secondary instability in the three-dimensional stage of laminar-turbulent transition. The catalogue of solutions is consistent with observations and predicts other phenomena that have not been identified in experiments. The theoretical results have been used to reproduce patterns in flow visualizations by computer animation. Analysis of the energy balance has shown a feedback loop between mean flow, two-dimensional, and three-dimensional disturbances that is considered key to the process of self-sustained transition. Various techniques have been developed to investigate details of the nonlinear three-dimensional processes involved in this feedback loop. Keywords: Boundary layer, Stability, Transition.
Author: O. Sendstad
Publisher:
ISBN:
Category : Simulation methods
Languages : en
Pages : 130
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Author: Olav Sendstad
Publisher:
ISBN:
Category :
Languages : en
Pages : 146
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Author: David Michael Driver
Publisher:
ISBN:
Category : Boundary layer
Languages : en
Pages : 268
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Author: Douglas J. Lewis
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ISBN:
Category :
Languages : en
Pages :
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Author: N. Pontikos
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Author: J. P. Johnston
Publisher:
ISBN:
Category : Boundary layer
Languages : en
Pages : 62
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Book Description
The various methods for measurement of the six components of the turbulence stress tensor are reviewed, and some of the data on the turbulent shear stress vector are presented to demonstrate the validity of current ideas for.
Author:
Publisher:
ISBN: 9789175957838
Category :
Languages : en
Pages : 184
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Book Description
