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On the Three-Dimensional Structure of Boundary Layers Undergoing Transition to Turbulence

1985
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Release : 1985
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Book Synopsis On the Three-Dimensional Structure of Boundary Layers Undergoing Transition to Turbulence by : William S. Saric

Download or read book On the Three-Dimensional Structure of Boundary Layers Undergoing Transition to Turbulence written by William S. Saric. This book was released on 1985. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Three-Dimensional Structure of Transitional Boundary-Layers

1990
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Release : 1990
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Book Synopsis Three-Dimensional Structure of Transitional Boundary-Layers by :

Download or read book Three-Dimensional Structure of Transitional Boundary-Layers written by . This book was released on 1990. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Three-Dimensional Structure of Boundary Layers in Transition to Turbulence

1986
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Release : 1986
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Book Synopsis Three-Dimensional Structure of Boundary Layers in Transition to Turbulence by : Thorwald Herbert

Download or read book Three-Dimensional Structure of Boundary Layers in Transition to Turbulence written by Thorwald Herbert. This book was released on 1986. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Three-dimensional Turbulent Boundary Layers

1992 Simulation methods
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Release : 1992
Genre : Simulation methods
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Book Synopsis Three-dimensional Turbulent Boundary Layers by : O. Sendstad

Download or read book Three-dimensional Turbulent Boundary Layers written by O. Sendstad. This book was released on 1992. Available in PDF, EPUB and Kindle. Book excerpt:

The Near Wall Mechanics of Three-dimensional Turbulent Boundary Layers

1992
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Release : 1992
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Book Synopsis The Near Wall Mechanics of Three-dimensional Turbulent Boundary Layers by : Olav Sendstad

Download or read book The Near Wall Mechanics of Three-dimensional Turbulent Boundary Layers written by Olav Sendstad. This book was released on 1992. Available in PDF, EPUB and Kindle. Book excerpt:

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