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Liutex and Its Applications in Turbulence Research

Liutex and Its Applications in Turbulence Research
A Book

by Chaoqun Liu,Hongyi Xu,Xiaoshu Cai,Yisheng Gao

  • Publisher : Academic Press
  • Release : 2020-11-13
  • Pages : 250
  • ISBN : 012819023X
  • Language : En, Es, Fr & De
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Liutex and Its Applications in Turbulence Research reviews the history of vortex definition, provides an accurate mathematical definition of vortices, and explains their applications in flow transition, turbulent flow, flow control, and turbulent flow experiments. The book explains the term "Rortex" as a mathematically defined rigid rotation of fluids or vortex, which could help solve many longstanding problems in turbulence research. The accurate mathematical definition of the vortex is important in a range of industrial contexts, including aerospace, turbine machinery, combustion, and electronic cooling systems, so there are many areas of research that can benefit from the innovations described here. This book provides a thorough survey of the latest research in generalized and flow-thermal, unified, law-of-the-wall for wall-bounded turbulence. Important theory and methodologies used for developing these laws are described in detail, including: the classification of the conventional turbulent boundary layer concept based on proper velocity scaling; the methodology for identification of the scales of velocity, temperature, and length needed to establish the law; and the discovery, proof, and strict validations of the laws, with both Reynolds and Prandtl number independency properties using DNS data. The establishment of these statistical laws is important to modern fluid mechanics and heat transfer research, and greatly expands our understanding of wall-bounded turbulence. Provides an accurate mathematical definition of vortices Provides a thorough survey of the latest research in generalized and flow-thermal, unified, law-of-the-wall for wall-bounded turbulence Explains the term "Rortex” as a mathematically defined rigid rotation of fluids or vortex Covers the statistical laws important to modern fluid mechanics and heat transfer research, and greatly expands our understanding of wall-bounded turbulence

Liutex and Its Applications in Turbulence Research

Liutex and Its Applications in Turbulence Research
A Book

by Chaoqun Liu,Hongyi Xu,Xiaoshu Cai,Yisheng Gao

  • Publisher : Academic Press
  • Release : 2020-10-29
  • Pages : 458
  • ISBN : 0128190248
  • Language : En, Es, Fr & De
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Liutex and Its Applications in Turbulence Research reviews the history of vortex definition, provides an accurate mathematical definition of vortices, and explains their applications in flow transition, turbulent flow, flow control, and turbulent flow experiments. The book explains the term "Rortex" as a mathematically defined rigid rotation of fluids or vortex, which could help solve many longstanding problems in turbulence research. The accurate mathematical definition of the vortex is important in a range of industrial contexts, including aerospace, turbine machinery, combustion, and electronic cooling systems, so there are many areas of research that can benefit from the innovations described here. This book provides a thorough survey of the latest research in generalized and flow-thermal, unified, law-of-the-wall for wall-bounded turbulence. Important theory and methodologies used for developing these laws are described in detail, including: the classification of the conventional turbulent boundary layer concept based on proper velocity scaling; the methodology for identification of the scales of velocity, temperature, and length needed to establish the law; and the discovery, proof, and strict validations of the laws, with both Reynolds and Prandtl number independency properties using DNS data. The establishment of these statistical laws is important to modern fluid mechanics and heat transfer research, and greatly expands our understanding of wall-bounded turbulence. Provides an accurate mathematical definition of vortices Provides a thorough survey of the latest research in generalized and flow-thermal, unified, law-of-the-wall for wall-bounded turbulence Explains the term “Rortex as a mathematically defined rigid rotation of fluids or vortex Covers the statistical laws important to modern fluid mechanics and heat transfer research, and greatly expands our understanding of wall-bounded turbulence

On the Application of a Hairpin Vortex Model of Wall Turbulence to Trailing Edge Noise Prediction

On the Application of a Hairpin Vortex Model of Wall Turbulence to Trailing Edge Noise Prediction
A Book

by Anonim

  • Publisher : Unknown Publisher
  • Release : 1985
  • Pages : 57
  • ISBN : 9876543210XXX
  • Language : En, Es, Fr & De
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Weakly Compressible Flow Model and Simulations of Vortex-shedding Flows about a Circular Cylinder

Weakly Compressible Flow Model and Simulations of Vortex-shedding Flows about a Circular Cylinder
A Book

by Mingshun Yuan

  • Publisher : Unknown Publisher
  • Release : 1988
  • Pages : 198
  • ISBN : 9876543210XXX
  • Language : En, Es, Fr & De
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Scientific and Technical Aerospace Reports

Scientific and Technical Aerospace Reports
A Book

by Anonim

  • Publisher : Unknown Publisher
  • Release : 1994
  • Pages : 329
  • ISBN : 9876543210XXX
  • Language : En, Es, Fr & De
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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.

Vortex Rings and Jets

Vortex Rings and Jets
Recent Developments in Near-Field Dynamics

by Daniel T. H. New,Simon C. M. Yu

  • Publisher : Springer
  • Release : 2015-03-26
  • Pages : 235
  • ISBN : 9812873961
  • Language : En, Es, Fr & De
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In this book, recent developments in our understanding of fundamental vortex ring and jet dynamics will be discussed, with a view to shed light upon their near-field behaviour which underpins much of their far-field characteristics. The chapters provide up-to-date research findings by their respective experts and seek to link near-field flow physics of vortex ring and jet flows with end-applications in mind. Over the past decade, our knowledge on vortex ring and jet flows has grown by leaps and bounds, thanks to increasing use of high-fidelity, high-accuracy experimental techniques and numerical simulations. As such, we now have a much better appreciation and understanding on the initiation and near-field developments of vortex ring and jet flows under many varied initial and boundary conditions. Chapter 1 outlines the vortex ring pinch-off phenomenon and how it relates to the initial stages of jet formations and subsequent jet behaviour, while Chapter 2 takes a closer look at the behaviour resulting from vortex ring impingement upon solid boundaries and how the use of a porous surface alters the impingement process. Chapters 3 and 4 focus upon the formation of synthetic jets from vortex ring structures experimentally and numerically, the challenges in understanding the relationships between their generation parameters and how they can be utilized in flow separation control problems. Chapter 5 looks at the use of imposing selected nozzle trailing-edge modifications to effect changes upon the near-field dynamics associated with circular, noncircular and coaxial jets, with a view to control their mixing behaviour. And last but not least, Chapter 6 details the use of unique impinging jet configurations and how they may lend themselves towards greater understanding and operating efficacies in heat transfer problems. This book will be useful to postgraduate students and researchers alike who wish to get up to speed regarding the latest developments in vortex ring and jet flow behaviour and how their interesting flow dynamics may be put into good use in their intended applications.

Issues in Aerospace and Defense Research and Application: 2011 Edition

Issues in Aerospace and Defense Research and Application: 2011 Edition
A Book

by Anonim

  • Publisher : ScholarlyEditions
  • Release : 2012-01-09
  • Pages : 383
  • ISBN : 1464966680
  • Language : En, Es, Fr & De
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Issues in Aerospace and Defense Research and Application: 2011 Edition is a ScholarlyEditions™ eBook that delivers timely, authoritative, and comprehensive information about Aerospace and Defense Research and Application. The editors have built Issues in Aerospace and Defense Research and Application: 2011 Edition on the vast information databases of ScholarlyNews.™ You can expect the information about Aerospace and Defense Research and Application in this eBook to be deeper than what you can access anywhere else, as well as consistently reliable, authoritative, informed, and relevant. The content of Issues in Aerospace and Defense Research and Application: 2011 Edition has been produced by the world’s leading scientists, engineers, analysts, research institutions, and companies. All of the content is from peer-reviewed sources, and all of it is written, assembled, and edited by the editors at ScholarlyEditions™ and available exclusively from us. You now have a source you can cite with authority, confidence, and credibility. More information is available at http://www.ScholarlyEditions.com/.

Progress in Turbulence Research

Progress in Turbulence Research
A Book

by Herman Branover,Yeshajahu Unger

  • Publisher : AIAA
  • Release : 1994
  • Pages : 353
  • ISBN : 9781600864155
  • Language : En, Es, Fr & De
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Air Force Research Resumés

Air Force Research Resumés
A Book

by Anonim

  • Publisher : Unknown Publisher
  • Release : 2021
  • Pages : 329
  • ISBN : 9876543210XXX
  • Language : En, Es, Fr & De
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NASA SP.

NASA SP.
A Book

by Anonim

  • Publisher : Unknown Publisher
  • Release : 1962
  • Pages : 329
  • ISBN : 9876543210XXX
  • Language : En, Es, Fr & De
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Naval Research Reviews

Naval Research Reviews
A Book

by Anonim

  • Publisher : Unknown Publisher
  • Release : 1995
  • Pages : 329
  • ISBN : 9876543210XXX
  • Language : En, Es, Fr & De
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Recent Research Advances in the Fluid Mechanics of Turbulent Jets and Plumes

Recent Research Advances in the Fluid Mechanics of Turbulent Jets and Plumes
A Book

by P.A. Davies,M.J. Valente Neves

  • Publisher : Springer Science & Business Media
  • Release : 2012-12-06
  • Pages : 514
  • ISBN : 9401109184
  • Language : En, Es, Fr & De
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Challenging problems involvrllg jet and plume phenomena are common to many areas of fundamental and applied scientific research, and an understanding of plume and jet behaviour is essential in many geophysical and industrial contexts. For example, in the field of meteorology, where pollutant dispersal takes place by means of atmospheric jets and plumes formed either naturally under conditions of convectively-driven flow in the atmospheric boundary layer, or anthropogenically by the release of pollutants from tall chimneys. In other fields of geophysics, buoyant plumes and jets are known to play important roles in oceanic mixing processes, both at the relatively large scale (as in deep water formation by convective sinking) and at the relatively small scale (as with plume formation beneath ice leads, for example). In the industrial context, the performances of many engineering systems are determined primarily by the behaviour of buoyant plumes and jets. For example, (i) in sea outfalls, where either sewage or thermal effluents are discharged into marine and/or freshwater environments, (ii) in solar ponds, where buoyant jets are released under density interfaces, (iii) in buildings, where thermally-generated plumes affect the air quality and ventilation properties of architectural environments, (iv) in rotating machinery where fluid jet~ are used for cooling purposes, and (v) in long road and rail tunnels, where safety and ventilation prcedures rely upon an understanding of the behaviour of buoyant jets. In many other engineering and oceanographic contexts, the properties of jets and plumes are of great importance.

Nuclear Science Abstracts

Nuclear Science Abstracts
A Book

by Anonim

  • Publisher : Unknown Publisher
  • Release : 1967
  • Pages : 329
  • ISBN : 9876543210XXX
  • Language : En, Es, Fr & De
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31st Aerospace Sciences Meeting and Exhibit: 93-0540 - 93-0589

31st Aerospace Sciences Meeting and Exhibit: 93-0540 - 93-0589
A Book

by Anonim

  • Publisher : Unknown Publisher
  • Release : 1993
  • Pages : 329
  • ISBN : 9876543210XXX
  • Language : En, Es, Fr & De
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Advances in Turbulence IV

Advances in Turbulence IV
Proceedings of the fourth European Turbulence Conference 30th June - 3rd July 1992

by F.T. Nieuwstadt

  • Publisher : Springer Science & Business Media
  • Release : 1993-06-30
  • Pages : 575
  • ISBN : 9780792322825
  • Language : En, Es, Fr & De
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The European Turbulence Conferences have been organized under the auspices of the European Mechanics Committee (Euromech) to provide a forum for discussion and exchange of recent and new results in the field of turbulence. The first conference was organized in Lyon in 1986 with 152 participants. The second and third conferences were held in Berlin (1988) and Stockholm (1990) with 165 and 172 participants respectively. The fourth was organized in Delft from 30 June to 3 July 1992 by the J.M. Burgers Centre. There were 214 participants from 22 countries. This steadily growing number of participants demonstrates both the success and need for this type of conference. The main topics of the Fourth European Turbulence Conference were: Dynamical Systems and Transition; Statistical Physics and Turbulence; Experiments and Novel Experimental Techniques; Particles and Bubbles in Turbulence; Simulation Methods; Coherent Structures; Turbulence Modelling and Compressibility Effects. In addition a special session was held on the subject of CeBular Automata. Each of the sessions was introduced with a survey lecture. The lecturers were: W. Eckhaus, AJ. Libchaber, L. Katgerman, F. Durst, M. Lesieur, B. Legras, D.G. Dritschel and P. Bradshaw. The contributions of the participants were subdivided into oral and poster presentations. In addition to the normal program, some Speciai Interest Groups of Ercoftac (European Research Community on Flow, Turbulence and Combustion) presented their research activities in the form of a poster.

Physics Briefs

Physics Briefs
Physikalische Berichte

by Anonim

  • Publisher : Unknown Publisher
  • Release : 1992
  • Pages : 329
  • ISBN : 9876543210XXX
  • Language : En, Es, Fr & De
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Applicability of Mixing Length Theory to a Turbulent Vortex System

Applicability of Mixing Length Theory to a Turbulent Vortex System
A Book

by Robert G. Ragsdale

  • Publisher : Unknown Publisher
  • Release : 1961
  • Pages : 41
  • ISBN : 9876543210XXX
  • Language : En, Es, Fr & De
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Advances in Turbulence Studies

Advances in Turbulence Studies
A Book

by Herman Branover,Yeshajahu Unger

  • Publisher : AIAA
  • Release : 1993
  • Pages : 361
  • ISBN : 9781600864032
  • Language : En, Es, Fr & De
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Vortex Methods and Vortex Motion

Vortex Methods and Vortex Motion
A Book

by Karl E. Gustafson,James A. Sethian

  • Publisher : SIAM
  • Release : 1991-01-01
  • Pages : 212
  • ISBN : 0898712580
  • Language : En, Es, Fr & De
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Vortex methods have emerged as a new class of powerful numerical techniques to analyze and compute vortex motion. This book addresses the theoretical, numerical, computational, and physical aspects of vortex methods and vortex motion.

International Aerospace Abstracts

International Aerospace Abstracts
A Book

by American Institute of Aeronautics and Astronautics. Technical Information Service,Institute of the Aerospace Sciences. Technical Information Service,United States. National Aeronautics and Space Administration

  • Publisher : Unknown Publisher
  • Release : 1997
  • Pages : 329
  • ISBN : 9876543210XXX
  • Language : En, Es, Fr & De
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