Liutex And Third Generation Of Vortex Definition And Identification

Author : Chaoqun Liu,Yiqian Wang
Publisher : Springer Nature
Page : 479 pages
File Size : 55,7 Mb
Release : 2021-07-26
Category : Science
ISBN : 9783030702175

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Liutex and Third Generation of Vortex Definition and Identification by Chaoqun Liu,Yiqian Wang Pdf

This book collects papers presented in the Invited Workshop, “Liutex and Third Generation of Vortex Definition and Identification for Turbulence,” from CHAOS2020, June 9-12, 2020, which was held online as a virtual conference. Liutex is a new physical quantity introduced by Prof. Chaoqun Liu of the University of Texas at Arlington. It is a vector and could give a unique and accurate mathematical definition for fluid rotation or vortex. The papers in this volume include some Liutex theories and many applications in hydrodynamics, aerodynamics and thermal dynamics including turbine machinery. As vortex exists everywhere in the universe, a mathematical definition of vortex or Liutex will play a critical role in scientific research. There is almost no place without vortex in fluid dynamics. As a projection, the Liutex theory will play an important role on the investigations of the vortex dynamics in hydrodynamics, aerodynamics, thermodynamics, oceanography, meteorology, metallurgy, civil engineering, astronomy, biology, etc. and to the researches of the generation, sustenance, modelling and controlling of turbulence.

Author : Chaoqun Liu,Hongyi Xu,Xiaoshu Cai,Yisheng Gao
Publisher : Academic Press
Page : 458 pages
File Size : 51,5 Mb
Release : 2020-10-29
Category : Science
ISBN : 9780128190241

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Liutex and Its Applications in Turbulence Research by Chaoqun Liu,Hongyi Xu,Xiaoshu Cai,Yisheng Gao Pdf

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

Author : Yiqian Wang,Yisheng Gao,Chaoqun Liu
Publisher : Springer Nature
Page : 421 pages
File Size : 55,6 Mb
Release : 2023-03-21
Category : Science
ISBN : 9789811989551

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Liutex and Third Generation of Vortex Identification by Yiqian Wang,Yisheng Gao,Chaoqun Liu Pdf

This proceedings highlights the applications of the newly introduced physical quantity Liutex in hydrodynamics and aerodynamics. Liutex is used to represent the fascinating rotational motion of fluids, i.e., the vortex. Ubiquitously seen in nature and engineering applications, the definition of vortices has been elusive. The Liutex vector provides a unique and systematic description of vortices. The proceedings collects papers presented in the invited workshop "Liutex and Third Generation of Vortex Identification for Engineering Applications" from Aerospace and Aeronautics World Forum 2021. The papers in this book cover both the theoretical aspects of Liutex and many applications in hydrodynamics and aerodynamics. The proceedings is a good reference for researchers in fluid mechanics who are interested in learning about the wide scope of applications of Liutex and using it to develop a new understanding of their research subjects.

Author : Yifei Yu
Publisher : Springer Nature
Page : 201 pages
File Size : 48,8 Mb
Release : 2024-06-29
Category : Electronic
ISBN : 9783031536700

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Mechanism of Hairpin Vortex Formation by Liutex by Yifei Yu Pdf

Author : Chaoqun Liu,Yifei Yu
Publisher : BoD – Books on Demand
Page : 126 pages
File Size : 51,5 Mb
Release : 2024-01-24
Category : Science
ISBN : 9781837686407

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Vortex Simulation and Identification by Chaoqun Liu,Yifei Yu Pdf

This book includes six chapters covering new vortex theories, vortex identification methods, and vortex simulation and applications. Vortices are ubiquitous in the universe and include tornados, hurricanes, airplane tip vortices, polar vortices, and even star vortices in the galaxy. Vortices are also building blocks, muscles, and sinews of turbulent flows. This book is useful for researchers in hydrodynamics, aerodynamics, thermodynamics, oceanography, meteorology, metallurgy, civil engineering, astronomy, biology, and more. It is also useful for research on the generation, sustenance, modeling, and controlling of turbulence.

Author : Christos H. Skiadas,Yiannis Dimotikalis
Publisher : Springer Nature
Page : 1080 pages
File Size : 55,7 Mb
Release : 2021-12-14
Category : Mathematics
ISBN : 9783030707958

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13th Chaotic Modeling and Simulation International Conference by Christos H. Skiadas,Yiannis Dimotikalis Pdf

Gathering the proceedings of the 13th CHAOS2020 International Conference, this book highlights recent developments in nonlinear, dynamical and complex systems. The conference was intended to provide an essential forum for Scientists and Engineers to exchange ideas, methods, and techniques in the field of Nonlinear Dynamics, Chaos, Fractals and their applications in General Science and the Engineering Sciences. The respective chapters address key methods, empirical data and computer techniques, as well as major theoretical advances in the applied nonlinear field. Beyond showcasing the state of the art, the book will help academic and industrial researchers alike apply chaotic theory in their studies.

Author : Chaoqun Liu
Publisher : Current Developments in Mathem
Page : 342 pages
File Size : 54,8 Mb
Release : 2020-04-28
Category : Science
ISBN : 9811437599

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Liutex-based and Other Mathematical, Computational and Experimental Methods for Turbulence Structure by Chaoqun Liu Pdf

The knowledge of quantitative turbulence mechanics relies heavily upon the definition of the concept of a vortex in mathematical terms. This reference work introduces the reader to Liutex, which is an accepted, accurate and mathematical definition of a vortex. The core of this book is a compilation of several papers on the subject. presented in the 13th World Congress of Computational Mechanics (WCCM2018), Symposium 704, Mathematics and Computations for Multiscale Structures of Turbulent and Other Complex Flows, New York, United States on July 27, 2018. This compilation also includes other research papers which explain the work done on the vortex definition, vortex identification and turbulence structure from different insight angles including mathematics, computational physics and experiments. The thirteen chapters in this volume will be informative to scientists and engineers who are interested in advanced theories about fluid dynamics, vortex science and turbulence research.

Author : Jiyuan Tu,Guan Heng Yeoh,Chaoqun Liu
Publisher : Butterworth-Heinemann
Page : 458 pages
File Size : 43,8 Mb
Release : 2012-11-07
Category : Computers
ISBN : 9780080982434

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Computational Fluid Dynamics by Jiyuan Tu,Guan Heng Yeoh,Chaoqun Liu Pdf

An introduction to CFD fundamentals and using commercial CFD software to solve engineering problems, designed for the wide variety of engineering students new to CFD, and for practicing engineers learning CFD for the first time. Combining an appropriate level of mathematical background, worked examples, computer screen shots, and step by step processes, this book walks the reader through modeling and computing, as well as interpreting CFD results. The first book in the field aimed at CFD users rather than developers. New to this edition: A more comprehensive coverage of CFD techniques including discretisation via finite element and spectral element as well as finite difference and finite volume methods and multigrid method. Coverage of different approaches to CFD grid generation in order to closely match how CFD meshing is being used in industry. Additional coverage of high-pressure fluid dynamics and meshless approach to provide a broader overview of the application areas where CFD can be used. 20% new content .

Author : Chaoqun Liu,Yisheng Gao
Publisher : Bentham Science Publishers
Page : 343 pages
File Size : 52,9 Mb
Release : 2020-04-28
Category : Science
ISBN : 9789811437588

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Liutex-based and Other Mathematical, Computational and Experimental Methods for Turbulence Structure by Chaoqun Liu,Yisheng Gao Pdf

The knowledge of quantitative turbulence mechanics relies heavily upon the definition of the concept of a vortex in mathematical terms. This reference work introduces the reader to Liutex, which is an accepted, accurate and mathematical definition of a vortex. The core of this book is a compilation of several papers on the subject. presented in the 13th World Congress of Computational Mechanics (WCCM2018), Symposium 704, Mathematics and Computations for Multiscale Structures of Turbulent and Other Complex Flows, New York, United States on July 27, 2018. This compilation also includes other research papers which explain the work done on the vortex definition, vortex identification and turbulence structure from different insight angles including mathematics, computational physics and experiments. The thirteen chapters in this volume will be informative to scientists and engineers who are interested in advanced theories about fluid dynamics, vortex science and turbulence research.

Author : Jiyuan Tu,Guan Heng Yeoh,Chaoqun Liu,Yao Tao
Publisher : Elsevier
Page : 498 pages
File Size : 43,5 Mb
Release : 2023-05-09
Category : Science
ISBN : 9780323939393

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Computational Fluid Dynamics by Jiyuan Tu,Guan Heng Yeoh,Chaoqun Liu,Yao Tao Pdf

Computational Fluid Dynamics: A Practical Approach, Fourth Edition is an introduction to computational fluid dynamics (CFD) fundamentals and commercial CFD software to solve engineering problems. The book is designed for a wide variety of engineering students new to CFD, but is also ideal for practicing engineers learning CFD for the first time. Combining an appropriate level of mathematical background, worked examples, computer screen shots, and step-by-step processes, this book walks the reader through modeling and computing, as well as interpreting CFD results. This new edition has been updated throughout, with new content and improved figures, examples and problems. Updated throughout, with new case studies, examples, references, and corrections according to readers’ and reviewers’ feedback Delivers the latest developments in CFD including the high-order and reduced-order modeling approach, machine learning–accelerated CFD, full coverage of high-speed fluid dynamics, and the meshless approaches to provide a broader overview of the application areas where CFD can be used Reorganized and rewritten to better meet the needs of CFD instructors and students Online resources include all lecturing and guest lecturing PPTs, computer lab practicing with step-by-step and screenshot guidelines, assignment and course project details, answers for review questions in each chapter, a new bonus chapter featuring detailed case studies, and result discussion

Author : P. G. Saffman
Publisher : Cambridge University Press
Page : 332 pages
File Size : 40,5 Mb
Release : 1995-02-24
Category : Mathematics
ISBN : 0521477395

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Vortex Dynamics by P. G. Saffman Pdf

Vortex dynamics is a natural paradigm for the field of chaotic motion and modern dynamical system theory. However, this volume focuses on those aspects of fluid motion that are primarily controlled by the vorticity and are such that the effects of the other fluid properties are secondary.

Author : Yichun Xie,Anbing Zhang,Haixin Liu,Lili Feng
Publisher : Springer
Page : 486 pages
File Size : 52,9 Mb
Release : 2019-02-27
Category : Computers
ISBN : 9811370249

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Geo-informatics in Sustainable Ecosystem and Society by Yichun Xie,Anbing Zhang,Haixin Liu,Lili Feng Pdf

This book constitutes the refereed proceedings of the 6th International Conference on Geo-informatics in Sustainable Ecosystem and Society, GSES 2018, held in Handan, China, in September 2018. The 46 papers presented in this volume were carefully reviewed and selected from 153 submissions and focus on spatial data acquisition, processing and management, modeling and analysis, and recent applications in the context of building healthier ecology and resource management using advanced remote sensing technology and spatial data modeling and analysis.

Author : Hans J. Lugt
Publisher : Wiley-Interscience
Page : 328 pages
File Size : 53,7 Mb
Release : 1983
Category : Dynamic meteorology
ISBN : UCSD:31822010061018

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Vortex Flow in Nature and Technology by Hans J. Lugt Pdf

Author : Frank Watson Dyson
Publisher : Unknown
Page : 62 pages
File Size : 46,8 Mb
Release : 1893
Category : Electronic
ISBN : HARVARD:HNYCVH

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The Potential of an Anchor Ring by Frank Watson Dyson Pdf

Author : Zhengping Zou,Songtao Wang,Huoxing Liu,Weihao Zhang
Publisher : Springer
Page : 563 pages
File Size : 55,5 Mb
Release : 2018-01-11
Category : Technology & Engineering
ISBN : 9789811057502

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Axial Turbine Aerodynamics for Aero-engines by Zhengping Zou,Songtao Wang,Huoxing Liu,Weihao Zhang Pdf

This book is a monograph on aerodynamics of aero-engine gas turbines focusing on the new progresses on flow mechanism and design methods in the recent 20 years. Starting with basic principles in aerodynamics and thermodynamics, this book systematically expounds the recent research on mechanisms of flows in axial gas turbines, including high pressure and low pressure turbines, inter-turbine ducts and turbine rear frame ducts, and introduces the classical and innovative numerical evaluation methods in different dimensions. This book also summarizes the latest research achievements in the field of gas turbine aerodynamic design and flow control, and the multidisciplinary conjugate problems involved with gas turbines. This book should be helpful for scientific and technical staffs, college teachers, graduate students, and senior college students, who are involved in research and design of gas turbines.