Self Sustaining Mechanisms Of Wall Turbulence
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Author | : Ronald Lee Panton |
Publisher | : Computational Mechanics |
Total Pages | : 448 |
Release | : 1997 |
Genre | : Science |
ISBN | : |
Why is wall turbulence self-sustaining? In this book well-regarded researchers not only discuss what they know and believe, but also speculate on ideas that still require numerical or experimental testing and verification. An initial brief history of boundary layer structure research is followed by chapters on experimental information and specific topics within the subject. There are then sections on computational aspects.
Author | : Ronald L. Panton |
Publisher | : |
Total Pages | : |
Release | : 1999 |
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Author | : Ronald L. Panton |
Publisher | : |
Total Pages | : |
Release | : 2001 |
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Author | : Sedat Tardu |
Publisher | : John Wiley & Sons |
Total Pages | : 234 |
Release | : 2013-02-07 |
Genre | : Science |
ISBN | : 1118601580 |
Wall turbulence is encountered in many technological applications as well as in the atmosphere, and a detailed understanding leading to its management would have considerable beneficial consequences in many areas. A lot of inspired work by experimenters, theoreticians, engineers and mathematicians has been accomplished over recent decades on this important topic and Statistical Approach to Wall Turbulence provides an updated and integrated view on the progress made in this area. Wall turbulence is a complex phenomenon that has several industrial applications, such as in aerodynamics, turbomachinery, geophysical flows, internal engines, etc. Several books exist on fluid turbulence, but Statistical Approach to Wall Turbulence is original in the sense that it focuses solely on the turbulent flows bounded by solid boundaries. The book covers the different physical aspects of wall turbulence, beginning with classical phenomenological aspects before advancing to recent research in the effects of the Reynolds numbers, near wall coherent structures, and wall turbulent transport process. This book would be of interest to postgraduate and undergraduate students in mechanical, chemical, and aerospace engineering, as well as researchers in aerodynamics, combustion, and all applications of wall turbulence.
Author | : A. Tsinober |
Publisher | : Springer Science & Business Media |
Total Pages | : 344 |
Release | : 2001-11-30 |
Genre | : Science |
ISBN | : 140200110X |
This book is an informal introduction to the turbulence of fluids. The emphasis is placed on turbulence as a physical phenomenon. It addresses the unresolved issues, misconceptions, controversies, and major problems of the turbulence of fluids rather than the conventional formalistic elements and models. Little use is made of complicated formalisms; instead the emphasis is placed on an essentially informal qualitative form. The scope of the book is focused on the purely basic aspects of the turbulent flows of incompressible fluids. This book will certainly be of interest and use to graduate students as well as scientists active in fields where the turbulence of fluids is of importance. The book is intentionally written to appeal to a broad readership with the aim of making the turbulence of fluids interesting and comprehensible to the interested engineer.
Author | : Alexander J. Smits |
Publisher | : |
Total Pages | : |
Release | : 1998 |
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Author | : Sedat Tardu |
Publisher | : John Wiley & Sons |
Total Pages | : 150 |
Release | : 2017-02-07 |
Genre | : Science |
ISBN | : 1119009057 |
Wall turbulence control is a major subject, the investigation of which involves significant industrial, environmental and fundamental consequences. Wall Turbulence Control addresses recent advances achieved in active and passive wall turbulence control over the past two decades. This valuable reference for scientists, researchers and engineers provides an updated view of the research into this topic, including passive control, optimal and suboptimal control methodology, linear control and control using adaptive methods (neural networks), polymer and bubble injection, electromagnetic control and recent advances in control by plasma.
Author | : A.V. Boiko |
Publisher | : Springer Science & Business Media |
Total Pages | : 273 |
Release | : 2013-03-09 |
Genre | : Technology & Engineering |
ISBN | : 3662047659 |
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.
Author | : Sedat Tardu |
Publisher | : John Wiley & Sons |
Total Pages | : 500 |
Release | : 2014-09-10 |
Genre | : Technology & Engineering |
ISBN | : 1118576772 |
Wall bounded turbulent flows are of major importance in industrial and environmental fluid mechanics. The structure of the wall turbulence is intrinsically related to the coherent structures that play a fundamental role in the transport process. The comprehension of their regeneration mechanism is indispensable for the development of efficient strategies in terms of drag control and near wall turbulence management. This book provides an up-to-date overview on the progress made in this specific area in recent years.
Author | : |
Publisher | : |
Total Pages | : 0 |
Release | : 2000 |
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At a recent NSF-AFOSR workshop on self-sustaining mechanisms of wall turbulence several research groups presented their concepts This paper reviews the idea that were presented. The paper is to distribute this information to fluid dynamieists who are non specialist in turbulence. The production of turbulence and Reynolds stress centers around vortices and "streaks of low speed fluid near the wall. There are two main categories of self-sustaining mechanisms. In one category parent vortices interact with the wall and produce offspring. In the second category streak velocity profiles are unstable and produce vortices.