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Workshop On Coherent Structure Of Turbulent Boundary Layers
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Book Synopsis Workshop on Coherent Structure of Turbulent Boundary Layers by : C. R. Smith
Download or read book Workshop on Coherent Structure of Turbulent Boundary Layers written by C. R. Smith and published by . This book was released on 1978 with total page 528 pages. Available in PDF, EPUB and Kindle. Book excerpt: A discussion of the role of visual and probe measurements in turbulent structure research is given, stressing the constraining limitations of each and the interrelationships of the two methods. A selective history of the use of visual results is discussed in terms of the constraining limitations of the visual methods. Retrospective remarks are presented concerning the Stanford visual data on the inner portions of turbulent boundary layer structure. The final section discusses some general features of what is currently known about the structure of turbulent boundary layers, draws conclusions from this general knowledge, and poses questions that seem currently important in gaining further understanding. The paper stresses overall aspects of the structure problem at the expense of details in an attempt to gain perspective. (Author).
Book Synopsis Coherent Structure of Turbulent Boundary Layers by : United States. Air Force. Office of Scientific Research
Download or read book Coherent Structure of Turbulent Boundary Layers written by United States. Air Force. Office of Scientific Research and published by . This book was released on with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Workshop on Coherent Structure of Turbulent Boundary Layers, Edited by C.R. Smith and D.E. Abbott. Sponsored by Air Force Office of Scientific Research by : C. R. Smith
Download or read book Workshop on Coherent Structure of Turbulent Boundary Layers, Edited by C.R. Smith and D.E. Abbott. Sponsored by Air Force Office of Scientific Research written by C. R. Smith and published by . This book was released on 1978 with total page 528 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Workshop on Coherent Structure of Turbulent Boundary Layers, November, 1978 by : C. R. Smith
Download or read book Workshop on Coherent Structure of Turbulent Boundary Layers, November, 1978 written by C. R. Smith and published by . This book was released on 1978 with total page 528 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Summary of the AFOSR/MSU Research Specialists Workshop on Coherent Structure in Turbulent Boundary Layers. Held at Michigan State University July 30 to August 1, 1979 by : S. J. Kline
Download or read book Summary of the AFOSR/MSU Research Specialists Workshop on Coherent Structure in Turbulent Boundary Layers. Held at Michigan State University July 30 to August 1, 1979 written by S. J. Kline and published by . This book was released on 1979 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt: There was general agreement that progress towards a consensus of turbulent boundary layer structural information was made, and that the directions which future research work should take were clarified. There was general recognition that a number of different coherent motions exist in the boundary layer, and that different techniques (both visual and probe) emphasize some at the expense of others. It is necessary to determine what role each of the coherent motions play, as well as the importance of the interactions between these motions. Substantial progress has been made, but a consensus emerged that more overlap of techniques and objectives is needed, and that more experiments which combine flow visualization with quantitative measurements should be performed. Three different theoretical approaches were discussed. Each qualitatively simulated the occurrence of some of the observed structural features, via their underlying mechanisms. At this stage, none of the theories can be considered complete or predictive. Some potentially important qualitative correspondences were made between numerical large eddy simulations and recent wall region data, although the computations still suffer from resolution, and perhaps spectral leakage problems.
Book Synopsis Summary of the AFOSR/MSU Research Specialists Workshop on Coherent Structure in Turbulent Boundary Layers by : Robert Edward Falco
Download or read book Summary of the AFOSR/MSU Research Specialists Workshop on Coherent Structure in Turbulent Boundary Layers written by Robert Edward Falco and published by . This book was released on 1979 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :J. P. Denier Publisher :World Scientific Publishing Company Incorporated ISBN 13 :9812703934 Total Pages :490 pages Book Rating :4.8/5 (127 download)
Book Synopsis Frontiers in Turbulence and Coherent Structures by : J. P. Denier
Download or read book Frontiers in Turbulence and Coherent Structures written by J. P. Denier and published by World Scientific Publishing Company Incorporated. This book was released on 2007-01-01 with total page 490 pages. Available in PDF, EPUB and Kindle. Book excerpt: These proceedings bring together researchers from around the world with the aim of providing a snapshot of the current state of research in modeling turbulence and coherent structures across a broad and diverse range of disciplines. The book will prove a useful resource to researchers as well as providing an excellent reference for graduate students working in this area. Particularly prominent among the speakers at the workshop were McComb (Edinburgh), Mullin (Manchester), Dijkstra (Utrecht), Jimenez (UPM and Stanford), Krommes (Princeton), Dewar (ANU), Chong (Melbourne), Falkovich (Weizmann Institute of Science), Watmuff (RMIT) and Frederiksen (CSIRO).
Book Synopsis Structure of Turbulence and Drag Reduction by : Albert Gyr
Download or read book Structure of Turbulence and Drag Reduction written by Albert Gyr and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 617 pages. Available in PDF, EPUB and Kindle. Book excerpt: In 1976 a similar titled IUTAM Symposium (Structure of Turbulence and Drag Reduction) was held in Washington . However, the progress made during the last thirteen years as weil as the much promising current research desired a second one this year. In Washington drag reduction by additives and by direct manipulation of the walls (compliant walls and heated surfaces) were discussed. In the meantime it became evident that drag reduction also occurs when turbulence is influenced by geometrical means, e.g. by influencing the pressure distribution by the shape of the body (airfoils) or by the introduction of streamwise perturbances on a body (riblets). In the recent years turbulence research has seen increasing attention being focused on the investigation of coherent structures, mainly in Newtonian fluids. We all know that these structures are a significant feature of turbulent flows, playing an important role in the energy balance in such flows. However their place in turbulence theories as weil as the factors influencing their development are still poorly understood. Consequently, the investigation of phenomena in which the properties of coherent structures are alte red provides a promising means of improving our understanding of turbulent flows in general.
Book Synopsis Turbulence Management and Relaminarisation by : H.W. Liepmann
Download or read book Turbulence Management and Relaminarisation written by H.W. Liepmann and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 530 pages. Available in PDF, EPUB and Kindle. Book excerpt: The last two decades have witnessed an intensifying effort in learning how to manage flow turbulence: it has in fact now become one of the most challenging and prized techno logical goals in fluid dynamics. The goal itself is of course not new. More than a hundred years ago, Reynolds already listed factors conducive to laminar and to turbulent flow (including among them curvature and acceleration). Further more, it is in retrospect clear that there were several early instances ot successful turbulence management. Examples are the reduction in drag achieved with a ring-trip placed on the front of a sphere or the insertion of a splitter-plate behind a circular cylinder; by the early 1950s there were numerous exercises at boundary layer control. Although many of these studies were interesting and suggestive, they led . to no spectacularly successful practical application, and the effort petered out in the late 1950s. The revival of interest in these problems in recent years can be attributed to the emergence of several new factors. First of all, fresh scientific insight into the structure of turbulence, in particular the accumulated evidence for the presence of significant order in turbulent flow, has been seen to point to new methods of managing turbulence. A second major reason has been the growing realisation that the rate at which the world is consuming its reserves of fossil fuels is no longer negligible; the economic value of greater energy effi ciency and lower drag has gone up significantly.
Download or read book River Mechanics written by M.S. Yalin and published by Elsevier. This book was released on 2015-07-14 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt: Understanding the mechanism and behaviour of rivers flowing in alluvium is a most challenging subject. The conditions presented by a natural river are far from simple: the flow varies with location and time, and the granular structure and cohesive properties of the alluvium are rarely homogeneous. River Mechanics addresses this subject and aims to improve the understanding and formulation of the fluvial processes which occur in rivers. Topics covered include the interpretation of turbulence in the light of recent advances in the field, and current thinking on the regime concept.
Book Synopsis Coherent Structures in Turbulent Boundary Layers by : Michigan State University
Download or read book Coherent Structures in Turbulent Boundary Layers written by Michigan State University and published by . This book was released on 1982 with total page 31 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis On the Application and Interpretation of Coherent Motion Detectors by : Charles Paul Gendrich
Download or read book On the Application and Interpretation of Coherent Motion Detectors written by Charles Paul Gendrich and published by . This book was released on 1991 with total page 604 pages. Available in PDF, EPUB and Kindle. Book excerpt: Coherent motions are understood to play an important role in enhancing the momentum transport of turbulent wall bounded shear flows, but determining whether or not a coherent motion is present in a given volume of space at a particular time is still a difficult task. Although most detection schemes were developed for use within a specific region above the wall, most are ultimately used throughout the entire boundary layer. Three different probe based algorithms and three different visual detection schemes are applied to combined flow visualization and spanwise vorticity probe data taken in the near wall region and at y/delta of 0.8. Several new performance parameters have been developed, and they are calculated along with most of the commonly used evaluation parameters as functions of detection threshold and Reynolds number or y+. The one to one correspondence between probe based detections and visual detections is also evaluated using two parameters already in common use and a new parameter, P(T, t), which is based on the number of event overlaps as a function of time during an event inner, outer, and mixed variables are used whenever appropriate to scale all results, but only two Reynolds number independent curves are found which describe the outer region response of any detection algorithm as a function of threshold.
Book Synopsis Experimental Investigation of coherent structures in turbulent boundary layers by : Candace Elaine Wark
Download or read book Experimental Investigation of coherent structures in turbulent boundary layers written by Candace Elaine Wark and published by . This book was released on 1989 with total page 588 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Lecture Notes on Turbulence and Coherent Structures in Fluids, Plasmas and Nonlinear Media by : Michael Shats
Download or read book Lecture Notes on Turbulence and Coherent Structures in Fluids, Plasmas and Nonlinear Media written by Michael Shats and published by World Scientific Publishing Company Incorporated. This book was released on 2006-01-01 with total page 387 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book combines lecture notes from the 19th Canberra Intentional Summer School on Turbulence and Coherent Structures in Fluids, Plasma and Granular Flows as well as selected papers from the accompanying workshop on the same topic. Modern concepts, tools and approaches to studying turbulence and coherent structures are introduced by world-class experts in several fields. The book covers theoretical approaches, numerical modeling and experimental methods in quasi-two-dimensional geophysical flows (such as oceans and atmospheres), turbulence and structures in ionized gases (such as magnetized plasma), three-dimensional flows (such as turbulent boundary layers), and also vortices and solutions in nonlinear optical medium. Many of the methodologies presented may also be applicable to other complex systems. One of the main objectives of this book is to introduce modern studies of turbulence as a cross-disciplinary domain and to give the reader exposure to some of the most vital theoretical and experimental areas of turbulence research.
Book Synopsis Theoretical Approaches to Turbulence by : D.L. Dwoyer
Download or read book Theoretical Approaches to Turbulence written by D.L. Dwoyer and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 377 pages. Available in PDF, EPUB and Kindle. Book excerpt: Turbulence is the lIDst natural nDde of fluid lIDtion, and has been the subject of scientific study for all Dst a century. During this period, various ideas and techniques have evolved to nDdel turbulence. Following Saffman, these theoretical approaches can be broadly divided into four overlapping categories -- (1) analytical lIDdelling, (2) physical lIDdelling, (3) phenomenologicalllDdelling, and (4) nurerical lIDdelling. With the purpose of stmtnarizing our =ent understanding of these theoretical approaches to turbulence, recognized leaders (fluid dynamicists, mathematicians and physicists) in the field were invited to participate in a formal workshop during October 10-12, 1984, sponsored by The Institute for CooIputer Applications in Science and Engineering and NASA Langley Research Center. Kraiciman, McCcxnb, Pouquet and Spiegel represented the category of analytical nDdelling, while Landahl and Saffman represented physical lIDdelling. The contributions of Latmder and Spalding were in the category of phenanenological lIDdelling, and those of Ferziger and Reynolds in the area of nurericalllDdelling. Aref, Cholet, Lumley, Moin, Pope and Temam served on the panel discussions. With the care and cooperation of the participants, the workshop achieved its purpose, and we believe that its proceedings published in this vol\. llre has lasting scientific value. The tone of the workshop was set by two introductory talks by Bushnell and ChaImm. Buslmell presented the engineering viewpoint while Chapman reviewed from a historical perspective developments in the study of turbulence. The remaining talks dealt with specific aspects of the theoretical approaches to fluid turbulence.
Download or read book NBS Special Publication written by and published by . This book was released on 1980 with total page 786 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Coherent Structure of a Turbulent Boundary Layer in a Convected Reference Frame by : C. R. Smith
Download or read book Coherent Structure of a Turbulent Boundary Layer in a Convected Reference Frame written by C. R. Smith and published by . This book was released on 1977 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is an interim annual report for an ongoing research program studying coherent structure in turbulent boundary layers. The design and development of a water channel facility for use in flow visualization studies of coherent turbulent boundary structure is described. The particularly unique aspects of this facility include the incorporation of (1) a moving reference (viewing) platform for study of relative motion effects and (2) a closed circuit television monitoring and recording system. Preliminary flow visualization results are presented for both a fixed and moving reference frame, and a tentative vortex-loop model of coherent turbulent boundary layer structure is proposed. Computer simulations of a transverse structure in a turbulent boundary layer are presented showing a remarkable similarity with experimental flow visualization results. Research directions for the following year are outlined. (Author).
