Yongqi Wang's Books

Physics of Lakes

Volume 1: Foundation of the Mathematical and Physical Background

By: Kolumban Hutter,Yongqi Wang,Irina P. Chubarenko

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Physics of Lakes

Volume 1: Foundation of the Mathematical and Physical Background

By: Kolumban Hutter,Yongqi Wang,Irina P. Chubarenko

This first volume in the treatise on the Physics of Lakes deals with the formulation of the mathematical and physical background. A large number of lakes on Earth are described, presenting their morphology as well as the causes of their response to the driving environment. Because the physics of lakes cannot be described without the language used in mathematics, these subjects are introduced first by using the simplest approach and with utmost care, assuming only a limited college knowledge of classical Newtonian physics, and continues with increasing complexity and elegance, starting with the fundamental equations of Lake Hydrodynamics in the form of ‘primitive equations’ and leading to a detailed treatment of angular momentum and vorticity. Following the presentation of these fundamentals turbulence modeling is introduced with Reynolds, Favre and other non-ergodic filters. The derivation of averaged field equations is presented with different closure schemes, including the k-ε model for a Boussinesq fluid and early anisotropic closure schemes. This is followed by expositions of surface gravity waves without rotation and an analysis of the role played by the distribution of mass within water bodies on the Earth, leading to a study of internal waves. The vertical structure of wind-induced currents in homogeneous and stratified waters and the Ekman theory and some of its extensions close this first volume of Physics of Lakes. The last chapter collects formulas for the phenomenological coefficients of water.

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Page Count

475

Publisher

Springer Science & Business Media

Published Date

ISBN 10

3642151787

ISBN 13

9783642151781

Fluid and Thermodynamics

Volume 1: Basic Fluid Mechanics

By: Kolumban Hutter,Yongqi Wang

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Fluid and Thermodynamics

Volume 1: Basic Fluid Mechanics

By: Kolumban Hutter,Yongqi Wang

This first volume discusses fluid mechanical concepts and their applications to ideal and viscous processes. It describes the fundamental hydrostatics and hydrodynamics, and includes an almanac of flow problems for ideal fluids. The book presents numerous exact solutions of flows in simple configurations, each of which is constructed and graphically supported. It addresses ideal, potential, Newtonian and non-Newtonian fluids. Simple, yet precise solutions to special flows are also constructed, namely Blasius boundary layer flows, matched asymptotics of the Navier-Stokes equations, global laws of steady and unsteady boundary layer flows and laminar and turbulent pipe flows. Moreover, the well-established logarithmic velocity profile is criticised.

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Page Count

652

Publisher

Springer

Published Date

ISBN 10

3319336339

ISBN 13

9783319336336

Subwavelength Optics Theory and Technology

By: Yongqi Fu

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Subwavelength Optics Theory and Technology

By: Yongqi Fu

From the beginning of this century, there has been a dramatic increase in interest in the study of surface plasmon polaritons-based metallic subwavelength structures and learning. This is a refreshing concise book on issues and considerations in designing

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Page Count

214

Publisher

Bentham Science Publishers

Published Date

ISBN 10

1608050505

ISBN 13

9781608050505

Fluid and Thermodynamics

Volume 2: Advanced Fluid Mechanics and Thermodynamic Fundamentals

By: Kolumban Hutter,Yongqi Wang

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Fluid and Thermodynamics

Volume 2: Advanced Fluid Mechanics and Thermodynamic Fundamentals

By: Kolumban Hutter,Yongqi Wang

In this book fluid mechanics and thermodynamics (F&T) are approached as interwoven, not disjoint fields. The book starts by analyzing the creeping motion around spheres at rest: Stokes flows, the Oseen correction and the Lagerstrom-Kaplun expansion theories are presented, as is the homotopy analysis. 3D creeping flows and rapid granular avalanches are treated in the context of the shallow flow approximation, and it is demonstrated that uniqueness and stability deliver a natural transition to turbulence modeling at the zero, first order closure level. The difference-quotient turbulence model (DQTM) closure scheme reveals the importance of the turbulent closure schemes’ non-locality effects. Thermodynamics is presented in the form of the first and second laws, and irreversibility is expressed in terms of an entropy balance. Explicit expressions for constitutive postulates are in conformity with the dissipation inequality. Gas dynamics offer a first application of combined F&T. The book is rounded out by a chapter on dimensional analysis, similitude, and physical experiments.

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Page Count

647

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Springer

Published Date

ISBN 10

3319336363

ISBN 13

9783319336367

Fluid and Thermodynamics

Volume 1: Basic Fluid Mechanics

By: Kolumban Hutter,Yongqi Wang

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Fluid and Thermodynamics

Volume 1: Basic Fluid Mechanics

By: Kolumban Hutter,Yongqi Wang

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652

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Springer

Published Date

ISBN 10

3319336339

ISBN 13

9783319336336

Fluid and Thermodynamics

Volume 3: Structured and Multiphase Fluids

By: Kolumban Hutter,Yongqi Wang

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Fluid and Thermodynamics

Volume 3: Structured and Multiphase Fluids

By: Kolumban Hutter,Yongqi Wang

This third volume describes continuous bodies treated as classical (Boltzmann) and spin (Cosserat) continua or fluid mixtures of such bodies. It discusses systems such as Boltzmann continua (with trivial angular momentum) and Cosserat continua (with nontrivial spin balance) and formulates the balance law and deformation measures for these including multiphase complexities. Thermodynamics is treated in the spirit of Müller–Liu: it is applied to Boltzmann-type fluids in three dimensions that interact with neighboring fluids on two-dimensional contact surfaces and/or one-dimensional contact lines. For all these situations it formulates the balance laws for mass, momenta, energy, and entropy. Further, it introduces constitutive modeling for 3-, 2-, 3-d body parts for general processes and materially objective variable sets and their reduction to equilibrium and non-equilibrium forms. Typical (reduced) fluid spin continua are liquid crystals. Prominent nematic examples of these include the Ericksen–Leslie–Parodi (ELP) formulation, in which material particles are equipped with material unit vectors (directors). Nematic liquid crystals with tensorial order parameters of rank 1 to n model substructure behavior better, and for both classes of these, the book analyzes the thermodynamic conditions of consistency. Granular solid–fluid mixtures are generally modeled by complementing the Boltzmann laws with a balance of fluctuation (kinetic) energy of the particles. The book closes by presenting a full Reynolds averaging procedure that accounts for higher correlation terms e.g. a k-epsilon formulation in classical turbulence. However, because the volume fraction is an additional variable, the theory also incorporates ‘k-epsilon equations’ for the volume fraction.

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644

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Springer

Published Date

ISBN 10

3319777459

ISBN 13

9783319777450

Physics of Lakes

Volume 1: Foundation of the Mathematical and Physical Background

By: Kolumban Hutter,Yongqi Wang,Irina P. Chubarenko

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Physics of Lakes

Volume 1: Foundation of the Mathematical and Physical Background

By: Kolumban Hutter,Yongqi Wang,Irina P. Chubarenko

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Page Count

475

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Springer Science & Business Media

Published Date

ISBN 10

3642151787

ISBN 13

9783642151781

Physics of Lakes

Volume 2: Lakes as Oscillators

By: Kolumban Hutter,Yongqi Wang,Irina P. Chubarenko

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Physics of Lakes

Volume 2: Lakes as Oscillators

By: Kolumban Hutter,Yongqi Wang,Irina P. Chubarenko

The overwhelming focus of this 2nd volume of “Physics of Lakes” is adequately expressed by its subtitle “Lakes as Oscillators”. It deals with barotropic and baroclinic waves in homogeneous and stratified lakes on the rotating Earth and comprises 12 chapters, starting with rotating shallow-water waves, demonstrating their classification into gravity and Rossby waves for homogeneous and stratified water bodies. This leads to gravity waves in bounded domains of constant depth, Kelvin, Poincaré and Sverdrup waves, reflection of such waves in gulfs and rectangles and their description in sealed basins as barotropic ‘inertial waves proper’. The particular application to gravity waves in circular and elliptical basins of constant depth leads to the description of Kelvin-type and Poincaré-type waves and their balanced description in basins of arbitrary geometry on the rotating Earth. Consideration of two-, three- and n-layer fluids with sharp interfaces give rise to the description of gravity waves of higher order baroclinicity with experimental corroboration in a laboratory flume and e.g. in Lake of Lugano, Lake Banyoles and Lake Biwa. Barotropic wave modes in Lake Onega with complex geometry show that data and computational output require careful interpretation. Moreover, a summer field campaign in Lake of Lugano and its two-layer modal analysis show that careful statistical analyses of the data are requested to match data with computational results. Three chapters are devoted to topographic Rossby waves. Conditions are outlined for which these waves are negligibly affected by baroclinicity. Three classes of these large period modes are identified: channel modes, so-called Ball modes and bay modes, often with periods which lie very close together. The last chapter deals with an entire class of Chrystal-type equations for barotropic waves in elongated basins which incorporate the effects of the rotation of the Earth.

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Page Count

709

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Springer Science & Business Media

Published Date

ISBN 10

3642191126

ISBN 13

9783642191121

Physics of Lakes

Volume 3: Methods of Understanding Lakes as Components of the Geophysical Environment

By: Kolumban Hutter,Irina P. Chubarenko,Yongqi Wang

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Physics of Lakes

Volume 3: Methods of Understanding Lakes as Components of the Geophysical Environment

By: Kolumban Hutter,Irina P. Chubarenko,Yongqi Wang

The ongoing thread in this volume of Physics of Lakes is the presentation of different methods of investigation for processes taking place in real lakes with a view to understanding lakes as components of the geophysical environment. It is divided into three parts. Part I is devoted to numerical modeling techniques and demonstrates that (i) wind-induced currents in depth-integrated models can only adequately predict current fields for extremely shallow lakes, and (ii) that classical multi-layered simulation models can only adequately reproduce current and temperature distributions when the lake is directly subjected to wind, but not the post-wind oscillating response. This makes shock capturing discretization techniques and Mellor-Yamada turbulence closure schemes necessary, as well as extremely high grid resolution to reduce the excessive numerical diffusion. Part II is devoted to the presentation of principles of observation and laboratory experimental procedures. It details the principles of operation for current, temperature, conductivity and other sensors applied in the field. It also discusses the advantages and limitations of common measuring methods like registration from stationary or drifting buoys, sounding and profiling from a boat, etc. Questions of data accuracy, quality, and reliability are also addressed. The use of laboratory experiments on a rotating platform is based on an exposition of dimensional analysis and model theory and illustrated using Lake Constance as an example. Part III gives an account of the dynamics of lake water as a particle-laden fluid, which, coupled with the transport of the bottom sediments, leads to morphodynamic changes of the bathymetry in estuarine and possibly whole lake regions. An elegant spatially one-dimensional theory makes it possible to derive analytic solutions of deltaic formations which are corroborated by laboratory experiments. A full three-dimensional description of the evolution of the alluvial bathymetry under prescribed tributary sediment input indicates a potential subject for future research.

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Page Count

660

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Springer Science & Business Media

Published Date

ISBN 10

3319004735

ISBN 13

9783319004730

Physics of Lakes

Volume 1: Foundation of the Mathematical and Physical Background

By: Kolumban Hutter,Wang Yongqi,Irina P. Chubarenko

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Physics of Lakes

Volume 1: Foundation of the Mathematical and Physical Background

By: Kolumban Hutter,Wang Yongqi,Irina P. Chubarenko

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434

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Springer

Published Date

ISBN 10

3642151779

ISBN 13

9783642151774

Advances in Cold-Region Thermal Engineering and Sciences

Technological, Environmental, and Climatological Impact Proceedings of the 6th International Symposium Held in Darmstadt, Germany, 22-25 August 1999

By: Kolumban Hutter,Yongqi Wang,Hans Beer

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Advances in Cold-Region Thermal Engineering and Sciences

Technological, Environmental, and Climatological Impact Proceedings of the 6th International Symposium Held in Darmstadt, Germany, 22-25 August 1999

By: Kolumban Hutter,Yongqi Wang,Hans Beer

This book consists of peer-reviewed articles and reviews presented as lectures at the Sixth International Symposium on Thermal Engineering and Sciences for Cold Regions in Darmstadt, Germany. It addresses all relevant aspects of thermal physics and engineering in cold regions, such as the Arctic regions. These environments present many unique freezing and melting phenomena and the relevant heat and mass transfer processes are of basic importance with respect to both the technological applications and the natural context in which they occur. Intended for physicists, engineers, geoscientists, climatologists and cryologists alike, these proceedings cover topics such as: ice formation and decay, heat conduction with phase change, convection with freezing and melting, thermal properties at low temperature, frost heave and permafrost, climate impact in cold regions, thermal design of structures, bio-engineering in cold regions, and many more.

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Page Count

642

Publisher

Springer Science & Business Media

Published Date

ISBN 10

3540663339

ISBN 13

9783540663331

Book's by Yongqi Wang

Physics of Lakes

Physics of Lakes

Fluid and Thermodynamics

Fluid and Thermodynamics

Subwavelength Optics Theory and Technology

Subwavelength Optics Theory and Technology

Fluid and Thermodynamics

Fluid and Thermodynamics

Fluid and Thermodynamics

Fluid and Thermodynamics

Fluid and Thermodynamics

Fluid and Thermodynamics

Physics of Lakes

Physics of Lakes

Physics of Lakes

Physics of Lakes

Physics of Lakes

Physics of Lakes

Physics of Lakes

Physics of Lakes

Advances in Cold-Region Thermal Engineering and Sciences

Advances in Cold-Region Thermal Engineering and Sciences

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