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Author : Robert Edward Spall
Publisher :
ISBN 13 :
Total Pages : 268 pages
Book Rating : 4.:/5 (193 download)
Download or read book A Numerical Study of Three-dimensional Vortex Breakdown written by Robert Edward Spall and published by . This book was released on 1987 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : H. L. Chen
Publisher :
ISBN 13 :
Total Pages : 68 pages
Book Rating : 4.4/5 (883 download)
Download or read book Numerical Study on Cut-and-connect of Three Dimensional Vortex Tubes written by H. L. Chen and published by . This book was released on 1991 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Author : Keith Vincent Lucas
Publisher :
ISBN 13 :
Total Pages : 306 pages
Book Rating : 4.F/5 ( download)
Download or read book Numerical Investigation of Three-dimensional Vortex Breakdown written by Keith Vincent Lucas and published by . This book was released on 1997 with total page 306 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : C.H. Liu
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (11 download)
Download or read book Simulation of a Three-dimensional Vortex Breakdown written by C.H. Liu and published by . This book was released on 1989 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Michael Rudolf Ruith
Publisher :
ISBN 13 :
Total Pages : 374 pages
Book Rating : 4.:/5 (534 download)
Download or read book Direct Numerical Simulation and Stability Analysis of Three-dimensional Swirling Jets and Wakes Exhibiting Vortex Breakdown written by Michael Rudolf Ruith and published by . This book was released on 2002 with total page 374 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Y. Nakamura
Publisher :
ISBN 13 :
Total Pages : 20 pages
Book Rating : 4.:/5 (317 download)
Download or read book Numerical Simulation of Vortex Breakdown by the Vortex-filament Method written by Y. Nakamura and published by . This book was released on 1983 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt: The vortex-filament method was applied to the simulation of vortex breakdown. The principal vortex region was represented by multiple filaments, and an axial velocity component was induced by a spiral winding of the filaments. First, an accuracy check was performed for a cylindrical swirling flow field that can be simulated to any accuracy by increasing the number of filaments. Second, an axisymmetric-type vortex breakdown was simulated, with experimental data serving asupstream conditions. The calculated axial- and theta-velocity contours show the breakdown of the vortex, including a rapid change in the vortex core, followed axially by a recovery zone and then a second breakdown. When three-dimensional initial data are used the second breakdown appears to be out of the spiral type in correspondence with experimental observations. The present method can easily be used to simulate other types of vortex breakdown or other vortex flows with axial velocity.
Author :
Publisher :
ISBN 13 :
Total Pages : 78 pages
Book Rating : 4.:/5 (317 download)
Download or read book Three-dimensional Simulation of Vortex Breakdown written by and published by . This book was released on 1990 with total page 78 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 108 pages
Book Rating : 4.:/5 (317 download)
Download or read book Numerical Studies of Three-dimensional Breakdown in Trailing Vortex Wakes written by and published by . This book was released on 1976 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Thomas John
Publisher :
ISBN 13 :
Total Pages : 210 pages
Book Rating : 4.E/5 ( download)
Download or read book Unsteady, Three Dimensional Simulation of Vortex Breakdown written by Thomas John and published by . This book was released on 2001 with total page 210 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 19 pages
Book Rating : 4.:/5 (873 download)
Download or read book Numerical Simulation of Vortex Breakdown written by and published by . This book was released on 1978 with total page 19 pages. Available in PDF, EPUB and Kindle. Book excerpt: Vortex breakdown is simulated by a three dimensional Lagrangian method using vortex filaments. The filaments are approximated by vortex elements and their velocity is computed by a Biot-Savart type law of interaction. The numerical calculations show the development of an axisymmetric bubble with a recirculation zone and resemble in many respects the results obtained in the physical experiments on vortex breakdown.
Author : P. G. Saffman
Publisher : Cambridge University Press
ISBN 13 : 9780521477390
Total Pages : 332 pages
Book Rating : 4.4/5 (773 download)
Download or read book Vortex Dynamics written by P. G. Saffman and published by Cambridge University Press. This book was released on 1995-02-24 with total page 332 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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 : National Aeronautics and Space Adm Nasa
Publisher :
ISBN 13 : 9781731186324
Total Pages : 80 pages
Book Rating : 4.1/5 (863 download)
Download or read book Three-Dimensional Simulation of Vortex Breakdown written by National Aeronautics and Space Adm Nasa and published by . This book was released on 2018-11-12 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt: The integral form of the complete, unsteady, compressible, three-dimensional Navier-Stokes equations in the conservation form, cast in generalized coordinate system, are solved, numerically, to simulate the vortex breakdown phenomenon. The inviscid fluxes are discretized using Roe's upwind-biased flux-difference splitting scheme and the viscous fluxes are discretized using central differencing. Time integration is performed using a backward Euler ADI (alternating direction implicit) scheme. A full approximation multigrid is used to accelerate the convergence to steady state. Kuruvila, G. and Salas, M. D. Langley Research Center...
Author : Todd W. Riddle
Publisher :
ISBN 13 :
Total Pages : 264 pages
Book Rating : 4.:/5 (273 download)
Download or read book A Numerical Analysis of Three-dimensional Vortex Trapping written by Todd W. Riddle and published by . This book was released on 1992 with total page 264 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Ernst Heinrich Hirschel
Publisher : Springer Science & Business Media
ISBN 13 : 3540456937
Total Pages : 293 pages
Book Rating : 4.5/5 (44 download)
Download or read book Numerical Flow Simulation III written by Ernst Heinrich Hirschel and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 293 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume contains eighteen reports on work, which is conducted since 2000 in the Collaborative Research Programme 'Numerical Flow Simulation' of the Centre National de la Recherche Scientifique (CNRS) and the Deutsche Forschungsgemeinschaft (DFG). French and German engineers and mathematicians present their joint research on the topics 'Development of Solution Techniques', 'Crystal Growth and Melts', 'Flows of Reacting Gases, Sound Generation' and 'Turbulent Flows'. In the background of their work is the still strong growth of the performance of super-computer architectures, which, together with large advances in algorithms, is opening vast new application areas of numerical flow simulation in research and industrial work. Results of this programme from the period 1996 to 1998 have been presented in NNFM 66 (1998), and NNFM75 (2001).
Author : T. H. Lê
Publisher :
ISBN 13 :
Total Pages : 14 pages
Book Rating : 4.:/5 (83 download)
Download or read book Numerical Simulation of Vortex Breakdown Via 3-D Euler Equations written by T. H. Lê and published by . This book was released on 1989 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 704 pages
Book Rating : 4.:/5 (31 download)
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 704 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Robert E. Spall
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (11 download)
Download or read book Unsteady Three-dimensional Vortex Breakdown written by Robert E. Spall and published by . This book was released on 1995 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
