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Numerical Study On Cut And Connect Of Three Dimensional Vortex Tubes

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Numerical Study On Cut And Connect Of Three Dimensional Vortex Tubes

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Author : H. L. Chen
language : en
Publisher:
Release Date : 1991

Numerical Study On Cut And Connect Of Three Dimensional Vortex Tubes written by H. L. Chen and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1991 with Vortex motion categories.

In the present study, generation of two vortex rings and their cut-and-connect process were numerically simulated by solving three-dimensional and time-dependent Navier-Stokes equations, under conditions similar to the laboratory experiment. In order to explain the mechanism of cut-and-connect, velocity, vorticity, pressure, helicity density and energy dissipation were examined for the flow field of the cut-and-connect of vortex rings. The present study revealed that energy dissipation is an essential process for circulation cancellation during vortex tubes cutting. Based on this energy dissipation mechanism, it is concluded that the cut-and-connect of vortex tubes may occur in the limit of inviscid flows. This conclusion is particularly important to the three-dimensional discrete vortex method for computing high Reynolds number flows. Features of helicity in the three-dimensional flow field of cut-and-connect process of vortex tubes were also investigated. The relation between the helicity density and the energy dissipation function in the three-dimensional flow field was examined.

Scientific And Technical Aerospace Reports

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Author :
language : en
Publisher:
Release Date : 1995

Scientific And Technical Aerospace Reports written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1995 with Aeronautics categories.

Vortex Dynamics And Vortex Methods

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Author : Christopher Radcliff Anderson
language : en
Publisher: American Mathematical Soc.
Release Date : 1991-12-23

Vortex Dynamics And Vortex Methods written by Christopher Radcliff Anderson and has been published by American Mathematical Soc. this book supported file pdf, txt, epub, kindle and other format this book has been release on 1991-12-23 with Science categories.

Understanding vortex dynamics is the key to understanding much of fluid dynamics. For this reason, many researchers, using a great variety of different approaches--analytical, computational, and experimental--have studied the dynamics of vorticity. The AMS-SIAM Summer Seminar on Vortex Dynamics and Vortex Methods, held in June 1990 at the University of Washington in Seattle, brought together experts with a broad range of viewpoints and areas of specialization. This volume contains the proceedings from that seminar. The focus here is on the numerical computation of high Reynolds number incompressible flows. Also included is a smaller selection of important experimental results and analytic treatments. Many of the articles contain valuable introductory and survey material as well as open problems. Readers will appreciate this volume for its coverage of a wide variety of numerical, analytical, and experimental tools and for its treatment of interesting important discoveries made with these tools.

A Numerical Study Of Three Dimensional Vortex Breakdown

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Author : Robert Edward Spall
language : en
Publisher:
Release Date : 1987

A Numerical Study Of Three Dimensional Vortex Breakdown written by Robert Edward Spall and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1987 with Fluid mechanics categories.

Vortex Flows And Related Numerical Methods

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Author : J.T. Beale
language : en
Publisher: Springer Science & Business Media
Release Date : 2013-04-18

Vortex Flows And Related Numerical Methods written by J.T. Beale and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-04-18 with Technology & Engineering categories.

Many important phenomena in fluid motion are evident in vortex flow, i.e., flows in which vortical structures are significant in determining the whole flow. This book, which consists of lectures given at a NATO ARW held in Grenoble (France) in June 1992, provides an up-to-date account of current research in the study of these phenomena by means of numerical methods and mathematical modelling. Such methods include Eulerian methods (finite difference, spectral and wavelet methods) as well as Lagrangian methods (contour dynamics, vortex methods) and are used to study such topics as 2- or 3-dimensional turbulence, vorticity generation by solid bodies, shear layers and vortex sheets, and vortex reconnection. For researchers and graduate students in computational fluid dynamics, numerical analysis, and applied mathematics.

Three Dimensional Vortex Methods For The Analysis Of Wave Propagation On Vortex Filaments

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Author : Anmin Qi
language : en
Publisher:
Release Date : 1991

Three Dimensional Vortex Methods For The Analysis Of Wave Propagation On Vortex Filaments written by Anmin Qi and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1991 with categories.