Vortex Dominated Flows

Author : Lu Ting,Rupert Klein,Omar M Knio
Publisher : Springer Science & Business Media
Page : 508 pages
File Size : 50,8 Mb
Release : 2007-07-05
Category : Science
ISBN : 9783540685821

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Vortex Dominated Flows by Lu Ting,Rupert Klein,Omar M Knio Pdf

This monograph provides in-depth analyses of vortex dominated flows via matched and multiscale asymptotics, and demonstrates how insight gained through these analyses can be exploited in the construction of robust, efficient, and accurate numerical techniques. The book explores the dynamics of slender vortex filaments in detail, including fundamental derivations, compressible core structure, weakly non-linear limit regimes, and associated numerical methods. Similarly, the volume covers asymptotic analysis and computational techniques for weakly compressible flows involving vortex-generated sound and thermoacoustics. The book is addressed to both graduate students and researchers.

Author : Lu Ting,Denis L. Blackmore,Egon Krause,Chee Tung
Publisher : World Scientific
Page : 302 pages
File Size : 44,5 Mb
Release : 2005
Category : Science
ISBN : 9789812703439

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Vortex Dominated Flows by Lu Ting,Denis L. Blackmore,Egon Krause,Chee Tung Pdf

Honoring the contributions of one of the field''s leading experts, Lu Ting, this indispensable volume contains important new results at the cutting edge of research. A wide variety of significant new analytical and numerical results in critical areas are presented, including point vortex dynamics, superconductor vortices, cavity flows, vortex breakdown, shock/vortex interaction, wake flows, magneto-hydrodynamics, rotary wake flows, and hypersonic vortex phenomena. The book will be invaluable for those interested in the state of the art of vortex dominated flows, both from a theoretical and applied perspective. Professor Lu Ting and Joe Keller have worked together for over 40 years. In their first joint work entitled OC Periodic vibrations of systems governed by nonlinear partial differential equationsOCO, perturbation analysis and bifurcation theory were used to determine the frequencies and modes of vibration of various physical systems. The novelty was the application to partial differential equations of methods which, previously, had been used almost exclusively on ordinary differential equations. Professsor Lu Ting is an expert in both fluid dynamics and the use of matched asymptotic expansions. His physical insight into fluid flows has led the way to finding the appropriate mathematical simplications used in the solutions to many difficult flow problems."

Author : M. Yousuff Hussaini,M. D. Salas
Publisher : Unknown
Page : 380 pages
File Size : 44,6 Mb
Release : 1987
Category : Fluid dynamics
ISBN : STANFORD:36105030443282

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Studies of Vortex Dominated Flows by M. Yousuff Hussaini,M. D. Salas Pdf

From the astrophysical scale of a swirling spiral galaxy, through the geophysical scale of a hurricane, down to the subatomic scale of elementary particles, vortical motion and vortex dynamics have played a profound role in our understanding of the physical world. Kuchemann referred to vortex dynamics as "the sinews and muscles of fluid motion. " In order to update our understanding of vortex dominated flows, NASA Langley Research Center and the Institute for Computer Applications in Science and Engineering (ICASE) conducted a workshop during July 9-11, 1985. The subject was broadly divided into five overlapping topics vortex dynamics, vortex breakdown, massive separation, vortex shedding from sharp leading edges and conically separated flows. Some of the experts in each of these areas were invited to provide an overview of the subject. This volume is the proceedings of the workshop and contains the latest, theoretical, numerical, and experimental work in the above-mentioned areas. Leibovich, Widnall, Moore and Sirovich discussed topics on the fundamentals of vortex dynamics, while Keller and Hafez treated the problem of vortex break down phenomena; the contributions of Smith, Davis and LeBalleur were in the area of massive separation and inviscid-viscous interactions, while those of Cheng, Hoeijmakers and Munnan dealt with sharp-leading-edge vortex flows; and Fiddes and Marconi represented the category of conical separated flows.

Author : Denis L. Blackmore,Egon Krause
Publisher : World Scientific
Page : 299 pages
File Size : 45,6 Mb
Release : 2005
Category : Science
ISBN : 9789812563200

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Vortex Dominated Flows by Denis L. Blackmore,Egon Krause Pdf

Honoring the contributions of one of the field's leading experts, Lu Ting, this indispensable volume contains important new results at the cutting edge of research. A wide variety of significant new analytical and numerical results in critical areas are presented, including point vortex dynamics, superconductor vortices, cavity flows, vortex breakdown, shock/vortex interaction, wake flows, magneto-hydrodynamics, rotary wake flows, and hypersonic vortex phenomena.The book will be invaluable for those interested in the state of the art of vortex dominated flows, both from a theoretical and applied perspective.Professor Lu Ting and Joe Keller have worked together for over 40 years. In their first joint work entitled ?Periodic vibrations of systems governed by nonlinear partial differential equations?, perturbation analysis and bifurcation theory were used to determine the frequencies and modes of vibration of various physical systems. The novelty was the application to partial differential equations of methods which, previously, had been used almost exclusively on ordinary differential equations. Professsor Lu Ting is an expert in both fluid dynamics and the use of matched asymptotic expansions. His physical insight into fluid flows has led the way to finding the appropriate mathematical simplications used in the solutions to many difficult flow problems.

Author : M.Y. Hussaini,M.D. Salas
Publisher : Springer Science & Business Media
Page : 367 pages
File Size : 50,5 Mb
Release : 2013-06-29
Category : Science
ISBN : 9781461246787

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Studies of Vortex Dominated Flows by M.Y. Hussaini,M.D. Salas Pdf

From the astrophysical scale of a swirling spiral galaxy, through the geophysical scale of a hurricane, down to the subatomic scale of elementary particles, vortical motion and vortex dynamics have played a profound role in our understanding of the physical world. Kuchemann referred to vortex dynamics as "the sinews and muscles of fluid motion. " In order to update our understanding of vortex dominated flows, NASA Langley Research Center and the Institute for Computer Applications in Science and Engineering (ICASE) conducted a workshop during July 9-11, 1985. The subject was broadly divided into five overlapping topics vortex dynamics, vortex breakdown, massive separation, vortex shedding from sharp leading edges and conically separated flows. Some of the experts in each of these areas were invited to provide an overview of the subject. This volume is the proceedings of the workshop and contains the latest, theoretical, numerical, and experimental work in the above-mentioned areas. Leibovich, Widnall, Moore and Sirovich discussed topics on the fundamentals of vortex dynamics, while Keller and Hafez treated the problem of vortex break down phenomena; the contributions of Smith, Davis and LeBalleur were in the area of massive separation and inviscid-viscous interactions, while those of Cheng, Hoeijmakers and Munnan dealt with sharp-leading-edge vortex flows; and Fiddes and Marconi represented the category of conical separated flows.

Author : Sean Javad Kamkar
Publisher : Stanford University
Page : 218 pages
File Size : 47,7 Mb
Release : 2011
Category : Electronic
ISBN : STANFORD:dk336zm3490

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Mesh Adaption Strategies for Vortex-dominated Flows by Sean Javad Kamkar Pdf

A new adaptive mesh refinement strategy that is based on a coupled feature-detection and error-estimation approach is developed. The overall goal is to apply the proper degree of refinement to key vortical features in aircraft and rotorcraft wakes. The refinement paradigm is based on a two-stage process wherein the vortical regions are initially identified for refinement using feature-detection, and then the appropriate resolution is determined by the local solution error. The feature-detection scheme uses a local normalization procedure that allows it to automatically identify regions for refinement with threshold values that are not dependent upon the convective scales of the problem. An error estimator, based on the Richardson Extrapolation method, then supplies the identified features with appropriate levels of refinement. The estimator is shown to be well-behaved for steady-state and time-accurate aerodynamic flows. The above strategy is implemented within the Helios code, which features a dual-mesh paradigm of unstructured grids in the near-body domain, and adaptive Cartesian grids in the off-body domain. A main objective of this work is to control the adaption process so that high fidelity wake resolution is obtained in the off-body domain. The approach is tested on several theoretical and practical vortex-dominated flow-fields in an attempt to resolve wingtip vortices and rotor wakes. Accuracy improvements to rotorcraft performance metrics and increased wake resolution are simultaneously documented.

Author : Aga Myung Goodsell
Publisher : Unknown
Page : 48 pages
File Size : 43,9 Mb
Release : 1991
Category : Aerodynamics, Supersonic
ISBN : UIUC:30112106710467

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Transonic and Supersonic Euler Computations of Vortex-dominated Flow Fields about a Generic Fighter by Aga Myung Goodsell Pdf

Author : M.Y. Hussaini,M.D. Salas
Publisher : Springer
Page : 0 pages
File Size : 55,8 Mb
Release : 1986-12-10
Category : Science
ISBN : 0387964304

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Studies of Vortex Dominated Flows by M.Y. Hussaini,M.D. Salas Pdf

From the astrophysical scale of a swirling spiral galaxy, through the geophysical scale of a hurricane, down to the subatomic scale of elementary particles, vortical motion and vortex dynamics have played a profound role in our understanding of the physical world. Kuchemann referred to vortex dynamics as "the sinews and muscles of fluid motion. " In order to update our understanding of vortex dominated flows, NASA Langley Research Center and the Institute for Computer Applications in Science and Engineering (ICASE) conducted a workshop during July 9-11, 1985. The subject was broadly divided into five overlapping topics vortex dynamics, vortex breakdown, massive separation, vortex shedding from sharp leading edges and conically separated flows. Some of the experts in each of these areas were invited to provide an overview of the subject. This volume is the proceedings of the workshop and contains the latest, theoretical, numerical, and experimental work in the above-mentioned areas. Leibovich, Widnall, Moore and Sirovich discussed topics on the fundamentals of vortex dynamics, while Keller and Hafez treated the problem of vortex break down phenomena; the contributions of Smith, Davis and LeBalleur were in the area of massive separation and inviscid-viscous interactions, while those of Cheng, Hoeijmakers and Munnan dealt with sharp-leading-edge vortex flows; and Fiddes and Marconi represented the category of conical separated flows.

Author : Aga M. Goodsell
Publisher : Unknown
Page : 48 pages
File Size : 44,7 Mb
Release : 1991
Category : Electronic
ISBN : NASA:31769000445000

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Transonic and Supersonic Euler Computations of Vortex-dominated Flow Fields about a Generic Fighter by Aga M. Goodsell Pdf

Author : Lu Ting,Rupert Klein
Publisher : Springer
Page : 222 pages
File Size : 43,7 Mb
Release : 2014-04-17
Category : Science
ISBN : 3662138506

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Viscous Vortical Flows by Lu Ting,Rupert Klein Pdf

This is a comprehensive account of the asymptotic theory of slender vortices with diffusion cores. Addressed to both graduate students and researchers it describes the mathematical model and its numerical analysis. The asymptotic analysis involves two length and two time scales. Consistency conditions and time invariance of moments of vorticity are given and applied to numerical solutions. The authors also describe consistency conditions between the large circumferential and axial velocity in the core.

Author : Hector Perez-De-Tejada
Publisher : BoD – Books on Demand
Page : 346 pages
File Size : 49,6 Mb
Release : 2017-03-01
Category : Science
ISBN : 9789535129295

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Vortex Dynamics and Optical Vortices by Hector Perez-De-Tejada Pdf

The contents of the book cover a wide variety of topics related to the analysis of the dynamics of vortices and describe the results of experiments, computational modeling and their interpretation. The book contains 13 chapters reaching areas of physics in vortex dynamics and optical vortices including vortices in superfluid atomic gases, vortex laser beams, vortex-antivortex in ferromagnetic hybrids, and optical vortices illumination in chiral nanostructures. Also, discussions are presented on particle motion in vortex flows, on the simulation of vortex-dominated flows, on vortices in saturable media, on achromatic vortices, and on ultraviolet vortices. Fractal light vortices, coherent vortex beams, together with vortices in electric dipole radiation, and spin wave dynamics in magnetic vortices are examined as well.

Author : P. G. Saffman
Publisher : Cambridge University Press
Page : 332 pages
File Size : 46,5 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 : Elizabeth M. Lee-Rausch
Publisher : Unknown
Page : 36 pages
File Size : 55,7 Mb
Release : 1993
Category : Airplanes
ISBN : NASA:31769000446016

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Conical Euler Analysis and Active Roll Suppression for Unsteady Vortical Flows about Rolling Delta Wings by Elizabeth M. Lee-Rausch Pdf

Author : Fathi Habashi
Publisher : CRC Press
Page : 930 pages
File Size : 41,7 Mb
Release : 1995-11-22
Category : Technology & Engineering
ISBN : 2884490329

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Computational Fluid Dynamics Techniques by Fathi Habashi Pdf

First published in 1995. Routledge is an imprint of Taylor & Francis, an informa company.

Author : Peter J. Schmid,Dan S. Henningson
Publisher : Springer Science & Business Media
Page : 578 pages
File Size : 53,7 Mb
Release : 2000-12-28
Category : Science
ISBN : 0387989854

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Stability and Transition in Shear Flows by Peter J. Schmid,Dan S. Henningson Pdf

A detailed look at some of the more modern issues of hydrodynamic stability, including transient growth, eigenvalue spectra, secondary instability. It presents analytical results and numerical simulations, linear and selected nonlinear stability methods. By including classical results as well as recent developments in the field of hydrodynamic stability and transition, the book can be used as a textbook for an introductory, graduate-level course in stability theory or for a special-topics fluids course. It is equally of value as a reference for researchers in the field of hydrodynamic stability theory or with an interest in recent developments in fluid dynamics. Stability theory has seen a rapid development over the past decade, this book includes such new developments as direct numerical simulations of transition to turbulence and linear analysis based on the initial-value problem.