An Investigation of Vortex Breakdown from the Point of View of Hydrodynamic Stability
Author : Thinh Tien Nguyen
Publisher :
Page : 296 pages
File Size : 48,52 MB
Release : 1980
Category : Hydrodynamics
ISBN :
Author : Thinh Tien Nguyen
Publisher :
Page : 296 pages
File Size : 48,52 MB
Release : 1980
Category : Hydrodynamics
ISBN :
Author : Touvia Miloh
Publisher : SIAM
Page : 554 pages
File Size : 11,47 MB
Release : 1991-01-01
Category : Science
ISBN : 9780898712773
To honor Professor Marshall P. Tulin on his 65th birthday (March 14, 1991), fluid mechanicians and applied mathematicians who have had close association and collaborated with Tulin during his career contribute papers in various areas related to his main interest naval hydrodynamics. No index. Annota
Author :
Publisher :
Page : 652 pages
File Size : 49,6 MB
Release : 1994
Category : Aeronautics
ISBN :
Author : Jasim Uddin Ahmad
Publisher :
Page : 318 pages
File Size : 23,56 MB
Release : 1989
Category : Fluid dynamics
ISBN :
Author : Tim C. Lieuwen
Publisher : Cambridge University Press
Page : 427 pages
File Size : 32,68 MB
Release : 2012-08-27
Category : Technology & Engineering
ISBN : 1139576836
Developing clean, sustainable energy systems is a pre-eminent issue of our time. Most projections indicate that combustion-based energy conversion systems will continue to be the predominant approach for the majority of our energy usage. Unsteady combustor issues present the key challenge associated with the development of clean, high-efficiency combustion systems such as those used for power generation, heating or propulsion applications. This comprehensive study is unique, treating the subject in a systematic manner. Although this book focuses on unsteady combusting flows, it places particular emphasis on the system dynamics that occur at the intersection of the combustion, fluid mechanics and acoustic disciplines. Individuals with a background in fluid mechanics and combustion will find this book to be an incomparable study that synthesises these fields into a coherent understanding of the intrinsically unsteady processes in combustors.
Author :
Publisher :
Page : 344 pages
File Size : 22,47 MB
Release : 1986
Category : Fluid dynamics
ISBN :
Author : S. Leibovich
Publisher :
Page : 22 pages
File Size : 40,81 MB
Release : 1983
Category :
ISBN :
Theoretical and experimental results, some quite recent, on the instability and breakdown of concentrated vortices at high Reynolds numbers are reviewed. Wave related theories of the vortex breakdown phenomena are treated in some detail; these appear to provide a qualitative description of the response of vortex breakdown to variations in swirl or flow rate, and Benjamin's criticality classification, a wave-based concept, is consistent with experimental data. Known general criteria for the stability of instability of inviscid columnar vortices are reviewed, together with numerical studies of an inviscid vortex model that provides an excellent analytical fit to measured velocity profiles in vortices that experience breakdown. A new analysis of experimental data on vortex breakdown flows sheds light on the interplay between criticality and instability. The flows sufficiently far upstream of breakdowns to be unaffected by them are supercritical and stable, but they are generally closer to marginal instability than they are to criticality. The wakes are both subcritical and unstable. A conceptual framework for vortex breakdown, incorporating nonlinear wave theory and instability to three-dimensional disturbances, is suggested based on information derived from the experimental studies. (Author).
Author : Christopher Radcliff Anderson
Publisher : American Mathematical Soc.
Page : 776 pages
File Size : 30,21 MB
Release : 1991-12-23
Category : Science
ISBN : 9780821896969
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.
Author : S. N. Singh
Publisher :
Page : 72 pages
File Size : 28,88 MB
Release : 1981
Category : Axial flow
ISBN :
A literature survey on the vortex breakdown phenomenon is presented. Several theoretical and numerical models which have been proposed and applied to explain the experimental observations concerning vortex bursting are reviewed. Required parameters to perform the related stability analysis have been identified. Appropriate criteria where possible are cited to assist engineers in estimating occurrence of vortext bursting. A numerical scheme to compute and verify some of the results for incompressible inviscid unstable modes is programmed on the computer at WPAFB. It is suggested that the influence of adverse pressure gradient on the vortex breakdown be investigated in detail and results thus obtained be compared with experiments under appropriate conditions.
Author :
Publisher :
Page : 1116 pages
File Size : 25,23 MB
Release : 1989
Category : Dissertations, Academic
ISBN :