The Origin Of Turbulence In Near Wall Flows
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The Origin of Turbulence in Near Wall Flows
Author | : A.V. Boiko,Genrih R. Grek,A.V. Dovgal,Victor V. Kozlov |
Publsiher | : Springer Science & Business Media |
Total Pages | : 273 |
Release | : 2013-03-09 |
Genre | : Technology & Engineering |
ISBN | : 9783662047651 |
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The Origin of Species Charles Darwin The origin of turbulence in fluids is a long-standing problem and has been the focus of research for decades due to its great importance in a variety of engineering applications. Furthermore, the study of the origin of turbulence is part of the fundamental physical problem of turbulence description and the philosophical problem of determinism and chaos. At the end of the nineteenth century, Reynolds and Rayleigh conjectured that the reason of the transition of laminar flow to the 'sinuous' state is in stability which results in amplification of wavy disturbances and breakdown of the laminar regime. Heisenberg (1924) was the founder of linear hydrody namic stability theory. The first calculations of boundary layer stability were fulfilled in pioneer works of Tollmien (1929) and Schlichting (1932, 1933). Later Taylor (1936) hypothesized that the transition to turbulence is initi ated by free-stream oscillations inducing local separations near wall. Up to the 1940s, skepticism of the stability theory predominated, in particular due to the experimental results of Dryden (1934, 1936). Only the experiments of Schubauer and Skramstad (1948) revealed the determining role of insta bility waves in the transition. Now it is well established that the transition to turbulence in shear flows at small and moderate levels of environmental disturbances occurs through development of instability waves in the initial laminar flow. In Chapter 1 we start with the fundamentals of stability theory, employing results of the early studies and recent advances.
Turbulent Flows
Author | : G. Biswas,V. Eswaran |
Publsiher | : CRC Press |
Total Pages | : 478 |
Release | : 2002 |
Genre | : Technology & Engineering |
ISBN | : 0849310148 |
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This book allows readers to tackle the challenges of turbulent flow problems with confidence. It covers the fundamentals of turbulence, various modeling approaches, and experimental studies. The fundamentals section includes isotropic turbulence and anistropic turbulence, turbulent flow dynamics, free shear layers, turbulent boundary layers and plumes. The modeling section focuses on topics such as eddy viscosity models, standard K-E Models, Direct Numerical Stimulation, Large Eddy Simulation, and their applications. The measurement of turbulent fluctuations experiments in isothermal and stratified turbulent flows are explored in the experimental methods section. Special topics include modeling of near wall turbulent flows, compressible turbulent flows, and more.
Turbulence and Random Processes in Fluid Mechanics
Author | : M. T. Landahl,E. Mollo-Christensen |
Publsiher | : Cambridge University Press |
Total Pages | : 184 |
Release | : 1992-09-25 |
Genre | : Mathematics |
ISBN | : 0521422132 |
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Fluid flow turbulence is a phenomenon of great importance in many fields of engineering and science.
Near wall Turbulent Flows
Author | : Ronald M. C. So,Charles G. Speziale,Brian Edward Launder |
Publsiher | : Elsevier Publishing Company |
Total Pages | : 1072 |
Release | : 1993 |
Genre | : Mathematics |
ISBN | : STANFORD:36105004093758 |
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Knowledge of near-wall turbulence from experimental, theoretical and numerical sources is accumulating at an ever increasing rate. An overview of the latest important developments is reported and discussed in depth in this volume with the goal of stimulating closer dialogue between researchers in all areas of near-wall turbulence. The full text of 95 contributed papers cover a broad range of topics in near-wall turbulent flows that includes boundary layers, coherent structures, drag reduction, experimental methods, high speed flows, numerical simulations, transition and turbulent modeling. The innovativeness of the contributions demonstrates that near-wall turbulence remains a vital and dynamically evolving field with important technological consequences for the future.
A Near wall Turbulence Model and Its Application to Fully Developed Turbulent Channel and Pipe Flows
Author | : S. W. Kim |
Publsiher | : Unknown |
Total Pages | : 34 |
Release | : 1988 |
Genre | : Fluid mechanics |
ISBN | : UIUC:30112059173754 |
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Drag Reduction in Near wall Turbulent Flow
Author | : Peter North Blossey |
Publsiher | : Unknown |
Total Pages | : 284 |
Release | : 1999 |
Genre | : Electronic Book |
ISBN | : CORNELL:31924081458501 |
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Near wall Turbulence
![Near wall Turbulence](https://youbookinc.com/wp-content/uploads/2024/06/cover.jpg)
Author | : Naim Afgan,Stephen Jay Kline |
Publsiher | : Unknown |
Total Pages | : 959 |
Release | : 1990 |
Genre | : Boundary value problems |
ISBN | : OCLC:636829919 |
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Turbulence In Coastal And Civil Engineering
Author | : B Mutlu Sumer,David R Fuhrman |
Publsiher | : World Scientific |
Total Pages | : 758 |
Release | : 2020-03-23 |
Genre | : Technology & Engineering |
ISBN | : 9789813234321 |
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This book discusses the subject of turbulence encountered in coastal and civil engineering.The primary aim of the book is to describe turbulence processes including transition to turbulence; mean and fluctuating flows in channels/pipes, and in currents; wave boundary layers (including boundary layers under solitary waves); streaming processes in wave boundary layers; turbulence processes in breaking waves including breaking solitary waves; turbulence processes such as bursting process and their implications for sediment transport; flow resistance in steady and wave boundary layers; and turbulent diffusion and dispersion processes in the coastal and river environment, including sediment transport due to diffusion/dispersion.Both phenomenological and statistical theories are described in great detail. Turbulence modelling is also described, and several examples for modelling of turbulence in steady flow and wave boundary layers are presented.The book ends with a chapter containing hands-on exercises on a wide variety of turbulent flows including experimental study of turbulence in an open-channel flow, using Laser Doppler Anemometry; Statistical, correlation and spectral analysis of turbulent air jet flow; Turbulence modelling of wave boundary layer flows; and numerical modelling of dispersion in a turbulent boundary layer, a set of exercises used by the authors in their Masters classes over many years.Although the book is essentially intended for professionals and researchers in the area of Coastal and Civil Engineering, and as a text book for graduate/post graduate students, the contents of the book will, however, additionally provide sufficient background in the study of turbulent flows relevant to many other disciplines, such as Wind Engineering, Mechanical Engineering, and Environmental Engineering.