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Book Three Dimensional Structure of Transitional Boundary Layers

Download or read book Three Dimensional Structure of Transitional Boundary Layers written by William S. Saric and published by . This book was released on 1987 with total page 25 pages. Available in PDF, EPUB and Kindle. Book excerpt: An overview of research on the three dimensional nature of boundary layer transition conducted by the contractor and others is reviewed in this report. The report reviews the implications of three-dimensionality arising from several sources, including background and free-stream disturbances, curvature, cross flow and imposed streamwise vorticity. Keywords: Boundary layer transition; Secondary instability; Navier stokes computations.

Book Three Dimensional Structure of Boundary Layers in Transition to Turbulence

Download or read book Three Dimensional Structure of Boundary Layers in Transition to Turbulence written by Thorwald Herbert and published by . This book was released on 1986 with total page 12 pages. 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.

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

Download or read book On the Three Dimensional Structure of Boundary Layers Undergoing Transition to Turbulence written by William S. Saric and published by . This book was released on 1985 with total page 34 pages. 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.

Book Three dimensional Turbulent Boundary Layers

Download or read book Three dimensional Turbulent Boundary Layers written by O. Sendstad and published by . This book was released on 1992 with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Scientific and Technical Aerospace Reports

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 456 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Book Note on Three dimensional Boundary layer Transition

Download or read book Note on Three dimensional Boundary layer Transition written by J. C. Cooke and published by . This book was released on 1962 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Three Dimensional Hypersonic Boundary Layer Stability and Transition

Download or read book Three Dimensional Hypersonic Boundary Layer Stability and Transition written by Roger L. Kimmel and published by . This book was released on 1997-12-01 with total page 83 pages. Available in PDF, EPUB and Kindle. Book excerpt: The stability and transition of three-dimensional boundary layers was studied. In the first phase of the investigation, arrays of hot film probes were used to measure the three-dimensional structure of instability waves on an axisymmetric cone at Mach 8. In the second phase, linear stability theory was used to design a cone with an elliptic cross section, which was also tested at Mach 8. Results show that disturbances on the axisymmetric cone travel in wave packets with predominantly zero wave angle. On the elliptic cone, only weak evidence for stationary waves was found. The predominant waves were traveling waves at about 12 kHz. Additional waves, probably second mode, occurred near 80 kHz.

Book On the Stability of Three Dimensional Boundary Layers

Download or read book On the Stability of Three Dimensional Boundary Layers written by and published by . This book was released on 1999 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book NBS Special Publication

Download or read book NBS Special Publication written by and published by . This book was released on 1978 with total page 520 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Hydraulic Research in the United States and Canada 1976

Download or read book Hydraulic Research in the United States and Canada 1976 written by Pauline H. Gurewitz and published by . This book was released on 1978 with total page 384 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Hydraulic Research in the United States and Canada

Download or read book Hydraulic Research in the United States and Canada written by United States. National Bureau of Standards and published by . This book was released on 1978 with total page 384 pages. Available in PDF, EPUB and Kindle. Book excerpt: