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Author : Robert L. Ash
Publisher :
ISBN 13 :
Total Pages : 20 pages
Book Rating : 4.:/5 (121 download)
Download or read book A Class of Unsteady, Three-dimensional Flow Structures in Turbulent Boundary Layers written by Robert L. Ash and published by . This book was released on 1981 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Nan S. Lui
Publisher :
ISBN 13 :
Total Pages : 45 pages
Book Rating : 4.:/5 (227 download)
Download or read book Numerical Simulation of Unsteady Three-Dimensional Turbulent Structures in Boundary Layer Flows written by Nan S. Lui and published by . This book was released on 1985 with total page 45 pages. Available in PDF, EPUB and Kindle. Book excerpt: The capabilities for numerical simulations of the dynamical effects of the underlying structures occurring in turbulent boundary layers have been developed. A mathematically operational model of hairpin vortex, which closely resembles the experimentally observed underlying structure of wall turbulence, has been constructed and the evolution of this incipient hairpin vortex as well as the distortion of a background laminar boundary layer has been successfully simulated. The height of the incipient hairpin vortex is about 1/5 fo the local boundary layer thickness. The calculated results not only exhibit most of the prominent features associated with turbulent spots and turbulent boundary layer flows, but also reveal dynamic processes which have been very difficult to observe in experimental studies, notably, the formation and intensification of another counter rotating hairpin vortex immediately upstream of the incipient hairpin vortex. Keywords: Navier-Stokes equations; Coherent wall structure.
Author : O. Sendstad
Publisher :
ISBN 13 :
Total Pages : 130 pages
Book Rating : 4.3/5 (91 download)
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:
Author : Nan-Suey Liu
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (134 download)
Download or read book Numerical Simulation of Unsteady Three-dimensional Turbulent Structures in Boundary Layer Flows written by Nan-Suey Liu and published by . This book was released on 1985 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Richard James Stuart
Publisher :
ISBN 13 :
Total Pages : 934 pages
Book Rating : 4.:/5 (592 download)
Download or read book Three-dimensionalcharacteristics of Coherent Flow Structures in a Turbulent Boundary Layer Over a Rough Surface written by Richard James Stuart and published by . This book was released on 1984 with total page 934 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Olav Sendstad
Publisher :
ISBN 13 :
Total Pages : 146 pages
Book Rating : 4.F/5 ( download)
Download or read book The Near Wall Mechanics of Three-dimensional Turbulent Boundary Layers written by Olav Sendstad and published by . This book was released on 1992 with total page 146 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : John F. Nash
Publisher :
ISBN 13 :
Total Pages : 210 pages
Book Rating : 4.3/5 (91 download)
Download or read book Three-dimensional Turbulent Boundary Layers written by John F. Nash and published by . This book was released on 1972 with total page 210 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (227 download)
Download or read book Numerical Study of a Three-Dimensional Turbulent Boundary Layer written by and published by . This book was released on 1990 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The effects of transverse strain on an initially two-dimensional turbulent boundary layer are studied in a direct numerical simulation of a planar channel flow with impulsively started transverse pressure gradient. Consistent with experiments in three-dimensional boundary layers, the simulation shows a decrease in the Reynolds shear stress with increasing transverse strain. Also, the directions of the Reynolds shear stress vector and the mean velocity gradient vector were found to differ. In addition, the simulation shows a drop in the turbulent kinetic energy. Terms in the Reynolds stress transport equations were computed. The balances indicate that the decrease in turbulent kinetic energy is a result of a decrease in turbulence production, along with an increase in turbulent dissipation. The effects of the transverse pressure gradient on the instantaneous flow structures were investigated.
Author : J. D. A. Walker
Publisher :
ISBN 13 :
Total Pages : 184 pages
Book Rating : 4.3/5 (91 download)
Download or read book Turbulent Flow Structure Near Walls written by J. D. A. Walker and published by . This book was released on 1991 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the past decade, progress has been made in determining the nature of turbulent flow near walls. Many of these advances, which have occurred through new experimental methodologies, direct numerical simulations, and new theoretical developments, are described in this volume.
Author : Gerald Peter Francis
Publisher :
ISBN 13 :
Total Pages : 372 pages
Book Rating : 4.E/5 ( download)
Download or read book Incompressible Flow of the Three-dimensional Turbulent Boundary Layer on the Floor of Curved Channels written by Gerald Peter Francis and published by . This book was released on 1965 with total page 372 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 380 pages
Book Rating : 4.X/5 (4 download)
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 380 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.
Author : Stanford University. Thermosciences Division. Thermosciences Division
Publisher :
ISBN 13 :
Total Pages : 46 pages
Book Rating : 4.F/5 ( download)
Download or read book Advances in Three-dimensional Turbulent Boundary Layers with Emphasis on the Wall-layer Regions written by Stanford University. Thermosciences Division. Thermosciences Division and published by . This book was released on 1994 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Richard Gordon Bradley
Publisher :
ISBN 13 :
Total Pages : 238 pages
Book Rating : 4.:/5 (295 download)
Download or read book Approximate Solutions for Compressible Turbulent Boundary Layers in Three-dimensional Flow written by Richard Gordon Bradley and published by . This book was released on 1966 with total page 238 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
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ISBN 13 :
Total Pages : 72 pages
Book Rating : 4.:/5 (946 download)
Download or read book Numerical Study of Three-Dimensional Turbulent Flows written by and published by . This book was released on 2001 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt: Direct numerical and large-eddy simulations were used to perform numerical experiments' relevant to the cases of interest. We employ a plane-channel geometry and impose mean-flow perturbations by subjecung fully developed 2D Poiseuille flow to irrotational deformations andlor in-plane motion of the channel walls. The former corresponds to outer-layer strains induced in boundary layers by pressure gradients, the latter to sudden variations in the near-wall region, caused by either step changes in the surface conditions or the combination of an outer-layer change and the no-slip boundary condition. This combination allows the physics of a broad class of spatially developing wall shear layers to be duplicated with a temporally evolving channel flow. The temporal computations can be realized much more effectively than can simulations of a spatial boundary layer. providing a much more extensive study for a given cost. As a consequence. we can consider a wide variety of mean-flow perturbations. Moreover, since mean statistics for these flows satisfy a one dimensional unsteady problem that contains the essential features of the spatial flow, they provide an effident means of testing on%point dosure models.
Author : Anthony John Wheeler
Publisher :
ISBN 13 :
Total Pages : 368 pages
Book Rating : 4.F/5 ( download)
Download or read book Three-dimensional Turbulent Boundary Layers written by Anthony John Wheeler and published by . This book was released on 1972 with total page 368 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 32 pages
Book Rating : 4.:/5 (317 download)
Download or read book Computation of Incompressible, Three-dimensional Turbulent Boundary Layers and Comparison with Experiment written by and published by . This book was released on 1982 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : A. J. Wheeler
Publisher :
ISBN 13 :
Total Pages : 220 pages
Book Rating : 4.F/5 ( download)
Download or read book Three-dimensional Turbulent Boundary Layers written by A. J. Wheeler and published by . This book was released on 1971 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt:
