Progress In Turbulence Vii

Author : Ramis Örlü,Alessandro Talamelli,Martin Oberlack,Joachim Peinke
Publisher : Springer
Page : 250 pages
File Size : 53,9 Mb
Release : 2017-06-26
Category : Technology & Engineering
ISBN : 9783319579344

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Progress in Turbulence VII by Ramis Örlü,Alessandro Talamelli,Martin Oberlack,Joachim Peinke Pdf

This volume collects the edited and reviewed contribution presented in the 7th iTi Conference in Bertinoro, covering fundamental and applied aspects in turbulence. In the spirit of the iTi conference, the volume is produced after the conference so that the authors had the opportunity to incorporate comments and discussions raised during the meeting. In the present book, the contributions have been structured according to the topics: I Theory II Wall bounded flows III Pipe flow IV Modelling V Experiments VII Miscellaneous topics

Author : Uriel Frisch
Publisher : Springer Science & Business Media
Page : 630 pages
File Size : 47,6 Mb
Release : 2012-12-06
Category : Science
ISBN : 9789401151184

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Advances in Turbulence VII by Uriel Frisch Pdf

Advances in Turbulence VII contains an overview of the state of turbulence research with some bias towards work done in Europe. It represents an almost complete collection of the invited and contributed papers delivered at the Seventh European Turbulence Conference, sponsored by EUROMECH and ERCOFTAC and organized by the Observatoire de la Côte d'Azur. New high-Reynolds number experiments combined with new techniques of imaging, non-intrusive probing, processing and simulation provide high-quality data which put significant constraints on possible theories. For the first time, it has been shown, for a class of passive scalar problems, why dimensional analysis sometimes gives the wrong answers and how anomalous intermittency corrections can be calculated from first principles. The volume is thus geared towards specialists in the area of flow turbulence who could not attend the conference as well as anybody interested in this rapidly moving field.

Author : Uriel Frisch
Publisher : Springer Science & Business Media
Page : 648 pages
File Size : 43,5 Mb
Release : 1998
Category : Science
ISBN : STANFORD:36105023056927

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Advances in Turbulence 7 by Uriel Frisch Pdf

Suitable for specialists in the field of flow turbulence, this volume comprises an almost complete collection of the papers delivered at the June/July 1998 conference. Providing an overview of the state of turbulence research with some bias towards work done in Europe, contributions are organized into the following sections: experiments and experimental techniques; transition and dynamical systems; numerical simulation; high Reynolds numbers and intermittency; industrial applications and modeling; vortex dynamics; astro- geophysical flow and convection; and transport of passive scalars. Lacks a subject index. Annotation copyrighted by Book News, Inc., Portland, OR

Author : Peter William Egolf,Kolumban Hutter
Publisher : Springer Nature
Page : 487 pages
File Size : 51,5 Mb
Release : 2020-04-02
Category : Science
ISBN : 9783030260330

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Nonlinear, Nonlocal and Fractional Turbulence by Peter William Egolf,Kolumban Hutter Pdf

Experts of fluid dynamics agree that turbulence is nonlinear and nonlocal. Because of a direct correspondence, nonlocality also implies fractionality. Fractional dynamics is the physics related to fractal (geometrical) systems and is described by fractional calculus. Up-to-present, numerous criticisms of linear and local theories of turbulence have been published. Nonlinearity has established itself quite well, but so far only a very small number of general nonlocal concepts and no concrete nonlocal turbulent flow solutions were available. This book presents the first analytical and numerical solutions of elementary turbulent flow problems, mainly based on a nonlocal closure. Considerations involve anomalous diffusion (Lévy flights), fractal geometry (fractal-β, bi-fractal and multi-fractal model) and fractional dynamics. Examples include a new ‘law of the wall’ and a generalization of Kraichnan’s energy-enstrophy spectrum that is in harmony with non-extensive and non-equilibrium thermodynamics (Tsallis thermodynamics) and experiments. Furthermore, the presented theories of turbulence reveal critical and cooperative phenomena in analogy with phase transitions in other physical systems, e.g., binary fluids, para-ferromagnetic materials, etc.; the two phases of turbulence identifying the laminar streaks and coherent vorticity-rich structures. This book is intended, apart from fluids specialists, for researchers in physics, as well as applied and numerical mathematics, who would like to acquire knowledge about alternative approaches involved in the analytical and numerical treatment of turbulence.

Author : P. Chassaing,R.A. Antonia,Fabien Anselmet,L. Joly,S. Sarkar
Publisher : Springer Science & Business Media
Page : 387 pages
File Size : 40,8 Mb
Release : 2013-06-29
Category : Science
ISBN : 9789401700757

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Variable Density Fluid Turbulence by P. Chassaing,R.A. Antonia,Fabien Anselmet,L. Joly,S. Sarkar Pdf

The first part aims at providing the physical and theoretical framework of the analysis of density variations in fully turbulent flows. Its scope is deliberately educational. In the second part, basic data on dynamical and scalar properties of variable density turbulent flows are presented and discussed, based on experimental data and/or results from direct numerical simulations. This part is rather concerned with a research audience. The last part is more directly devoted to an engineering audience and deals with prediction methods for turbulent flows of variable density fluid. Both first and second order, single point modeling are discussed, with special emphasis on the capability to include specific variable density / compressibility effects.

Author : Shigeo Kida
Publisher : Springer Science & Business Media
Page : 360 pages
File Size : 41,7 Mb
Release : 2006-05-05
Category : Technology & Engineering
ISBN : 9781402041815

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IUTAM Symposium on Elementary Vortices and Coherent Structures: Significance in Turbulence Dynamics by Shigeo Kida Pdf

Elementary vortices – those tubular swirling vortical structures with concentrated vorticity commonly observed in various kinds of turbulent flows – play key roles in turbulence dynamics (e.g. enhancement of mixing, diffusion and resistance) and characterize turbulence statistics (e.g. intermittency). Because of their dynamical importance, manipulation of elementary vortices is expected to be effective and useful in turbulence control as well as in construction of turbulence modeling. The most advanced research works on elementary vortices and related problems were presented and discussed at the IUTAM Symposium in Kyoto, Japan, 26-28 October 2004. This book contains 40 contributions presented there, the subjects of which cover vortex dynamics, coherent structures, chaotic advection and mixing, statistical properties of turbulence, rotating and stratified turbulence, instability and transition, dynamics of thin vortices, finite-time singularity, and superfluid turbulence. The book should be useful for readers of graduate and advanced levels in the field of fluid turbulence.

Author : Rama Govindarajan
Publisher : Springer Science & Business Media
Page : 458 pages
File Size : 49,8 Mb
Release : 2006-01-18
Category : Technology & Engineering
ISBN : 9781402041594

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Sixth IUTAM Symposium on Laminar-Turbulent Transition by Rama Govindarajan Pdf

The dynamics of transition from laminar to turbulent flow remains to this day a major challenge in theoretical and applied mechanics. A series of IUTAM symposia held over the last twenty five years at well-known Centres of research in the subject - Novosibirsk, Stuttgart, Toulouse, Sendai and Sedona (Arizona) - has proved to be a great catalyst which has given a boost to research and our understanding of the field. At this point of time, the field is changing significantly with several emerging directions. The sixth IUTAM meeting in the series, which was held at the Jawaharlal Nehru Centre for Advanced Scientific Research, Bangalore, India, focused on the progress after the fifth meeting held at Sedona in 1999. The s- posium, which adhered to the IUTAM format of a single session, included seven invited lectures, fifty oral presentations and eight posters. During the course of the symposium, the following became evident. The area of laminar-turbulent transition has progressed considerably since 1999. Better theoretical tools, for handling nonlinearities as well as transient behaviour are now available. This is accompanied by an en- mous increase in the level of sophistication of both experiments and direct numerical simulations. The result has been that our understanding of the early stages of the transition process is now on much firmer footing and we are now able to study many aspects of the later stages of the transition process.

Author : Tom Mullin,R. R. Kerswell
Publisher : Springer Science & Business Media
Page : 352 pages
File Size : 48,7 Mb
Release : 2005-09-19
Category : Technology & Engineering
ISBN : 1402040482

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IUTAM Symposium on Laminar-Turbulent Transition and Finite Amplitude Solutions by Tom Mullin,R. R. Kerswell Pdf

An exciting new direction in hydrodynamic stability theory and the transition to turbulence is concerned with the role of disconnected states or finite amplitude solutions in the evolution of disorder in fluid flows. This volume contains refereed papers presented at the IUTAM/LMS sponsored symposium on "Non-Uniqueness of Solutions to the Navier-Stokes equations and their Connection with Laminar-Turbulent Transition" held in Bristol 2004. Theoreticians and experimentalists gathered to discuss developments in understanding both the onset and collapse of disordered motion in shear flows such as those found in pipes and channels. The central objective of the symposium was to discuss the increasing amount of experimental and numerical evidence for finite amplitude solutions to the Navier-Stokes equations and to set the work into a modern theoretical context. The participants included many of the leading authorities in the subject and this volume captures much of the flavour of the resulting stimulating and lively discussions.

Author : Andrew Pollard,Sebastien Candel
Publisher : Springer Science & Business Media
Page : 454 pages
File Size : 41,7 Mb
Release : 2013-03-14
Category : Science
ISBN : 9789401719988

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IUTAM Symposium on Turbulent Mixing and Combustion by Andrew Pollard,Sebastien Candel Pdf

The goals of the Symposium were to draw together researchers in turbulence and combustion so as to highlight advances and challenge the boundaries to our understanding of turbulent mixing and combus tion from both experimental and simulation perspectives; to facilitate cross-fertilization between leaders in these two fields. These goals were noted to be important given that turbulence itself is viewed as the last great problem in classical physics and the addition of chemical reaction amplifies the difficulties enormously. The papers that have been included here reflect the richness of our subject. Turbulence is rich and complex in its own right. And, its inner structure, hidden in the morass of scales, large and small, can dominate transport. Earlier IUTAM Symposia have considered this field, Eddy Structure Identification in Free Turbulent Flows, Bonnet and Glauser (eds) 1992 and Simulation and Identification of Organized Structures in Flows, Sorensen, Hopfinger and Aubry (eds) 1997. The combustion community is well served by its specialized events, most notable is the bi annual International Combustion Symposium, held under the auspices of the Combustion Institute. Mixing is often considered somewhere in between these two. This broad landscape was addressed in this Sym posium in a somewhat temporal linear fashion of increasing complexity. The lectures considered the many challenges posed by adding one ele ment to the base formed by others: turbulence and turbulent mixing in the absence of combustion through to turbulent mixing dominated by chemistry and combustion.

Author : Arkady Tsinober
Publisher : Springer
Page : 229 pages
File Size : 50,5 Mb
Release : 2018-12-17
Category : Technology & Engineering
ISBN : 9783319995311

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The Essence of Turbulence as a Physical Phenomenon by Arkady Tsinober Pdf

Now in its second edition, this book clearly, concisely and comprehensively outlines the essence of turbulence. In view of the absence of a theory based on first principles and adequate tools to handle the problem, the “essence” of turbulence, i.e. what turbulence really is from a fundamental point of view, is understood empirically through observations from nature, laboratories and direct numerical simulations rather than explained by means of conventional formalistic aspects, models, etc., resulting in pertinent issues being described at a highly theoretical level in spite of the mentioned lack of theory. As such, the book highlights and critically reexamines fundamental issues, especially those of paradigmatic nature, related to conceptual and problematic aspects, key misconceptions and unresolved matters, and discusses why the problem is so difficult. As in the previous edition, the focus on fundamental issues is also a consequence of the view that without corresponding advances in fundamental aspects there is little chance of progress in any applications. More generally there is a desperate need for physical fundamentals of a great variety of processes in nature and technology in which turbulence plays a central role. Turbulence is omnipresent throughout the natural sciences and technology, but despite the vast sea of information available the book retains its brevity without oversimplifications, making it of interest to a broad audience.

Author : P.F. Hodnett
Publisher : Springer Science & Business Media
Page : 311 pages
File Size : 40,8 Mb
Release : 2012-12-06
Category : Science
ISBN : 9789401007924

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IUTAM Symposium on Advances in Mathematical Modelling of Atmosphere and Ocean Dynamics by P.F. Hodnett Pdf

The goals ofthe Symposium were to highlight advances in modelling ofatmosphere and ocean dynamics, to provide a forum where atmosphere and ocean scientists could present their latest research results and learn ofprogress and promising ideas in these allied disciplines; to facilitate interaction between theory and applications in atmosphere/ocean dynamics. These goals were seen to be especially important in view ofcurrent efforts to model climate requiring models which include interaction between atmosphere, ocean and land influences. Participants were delighted with the diversity ofthe scientific programme; the opportunity to meet fellow scientists from the other discipline (either atmosphere or ocean) with whom they do not normally interact through their own discipline; the opportunity to meet scientists from many countries other than their own; the opportunity to hear significant presentations (50 minutes) from the keynote speakers on a range ofrelevant topics. Certainly the goal ofcreating a forum for exchange between atmosphere and ocean scientists who need to input to create realistic models for climate prediction was achieved by the Symposium and this goal will hopefully be further advanced by the publication ofthese Proceedings.

Author : D. Durban,Dan Givoli,J.G. Simmonds
Publisher : Springer Science & Business Media
Page : 380 pages
File Size : 40,6 Mb
Release : 2001-11-30
Category : Science
ISBN : 1402003803

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Advances in the Mechanics of Plates and Shells by D. Durban,Dan Givoli,J.G. Simmonds Pdf

The optimal control of flexible structures is an active area of research. The main body of work in this area is concerned with the control of time-dependent displacements and stresses, and assumes linear elastic conditions, namely linear elastic material behavior and small defor- tion. See, e. g. , [1]–[3], the collections of papers [4, 5], and references therein. On the other hand, in the present paper we consider the static optimal control of a structure made of a nonlinear elastic material and und- going large deformation. An important application is the suppression of static or quasi-static elastic deformation in flexible space structures such as parts of satellites by the use of control loads [6]. Solar rad- tion and radiation from other sources induce a temperature field in the structure, which in turn generates an elastic displacement field. The displacements must usually satisfy certain limitations dictated by the allowed working conditions of various orientation-sensitive instruments and antennas in the space vehicle. For example, a parabolic reflector may cease to be effective when undergoing large deflection. The elastic deformation can be reduced by use of control loads, which may be imp- mented via mechanically-based actuators or more modern piezoelectric devices. When the structure under consideration is made of a rubb- like material and is undergoing large deformation, nonlinear material and geometric effects must be taken into account in the analysis.

Author : Anonim
Publisher : Unknown
Page : 964 pages
File Size : 49,8 Mb
Release : 2002
Category : Fluid dynamics
ISBN : UOM:39015047958288

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Advances in Turbulence by Anonim Pdf

Author : Robert M. Kerr,Yoshifumi Kimura
Publisher : Springer Science & Business Media
Page : 298 pages
File Size : 44,9 Mb
Release : 2012-12-06
Category : Science
ISBN : 9789401009287

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IUTAM Symposium on Developments in Geophysical Turbulence by Robert M. Kerr,Yoshifumi Kimura Pdf

This symposium continues a long tradition for IUGGjIUTAM symposia going back to "Fundamental Problems in Thrbulence and their Relation to Geophysics" Marseille, 1961. The five topics that were emphasized were: turbulence modeling, statistics of small scales and coherent structures, con vective turbulence, stratified turbulence, and historical developments. The objective was to consider the ubiquitous nature of turbulence in a variety of geophysical problems and related flows. Some history of the contribu tions of NCAR and its alumni were discussed, including those of Jackson R Herring, who has been a central figure at NCAR since 1972. To the original topics we added rotation, which appeared in many places. This includes rotating stratified turbulence, rotating convective turbulence, horizontal rotation that appears in flows over terrain and the role of small scale vorticity in many flows. These complicated flows have recently begun to be simulated by several groups from around the world and this meeting provided them with an excellent forum for exchanging results, plus inter actions with those doing more fundamental work on rotating stratified and convective flows. New work on double diffusive convection was given in two presentations. The history of Large Eddy Simulations was presented and several new approaches to this field were given. This meeting also spawned some interesting interactions between observational side and how to inter pret the observations with modeling and simulations around the theme of particle dispersion in these flows.

Author : Anonim
Publisher : Unknown
Page : 348 pages
File Size : 50,9 Mb
Release : 1994
Category : Electronic
ISBN : 1600866344

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Progress in Turbulence Research by Anonim Pdf