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Author : Anping Wang
Publisher :
ISBN 13 :
Total Pages : 190 pages
Book Rating : 4.E/5 ( download)
Download or read book Vortex Breakdown in Slowly Diverging Tubes written by Anping Wang and published by . This book was released on 1994 with total page 190 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Luis E. Rodrigues Castro
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (64 download)
Download or read book An Experimental Investigation of the Vortex Breakdown Phenomenon in a Diverging Tube written by Luis E. Rodrigues Castro and published by . This book was released on 1969 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Charles Lowry Robertson
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (64 download)
Download or read book An Experimental Investigation of the Vortex Breakdown Phenomenon in a Diverging Tube written by Charles Lowry Robertson and published by . This book was released on 1971 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Daryl O. Snyder
Publisher :
ISBN 13 :
Total Pages : 124 pages
Book Rating : 4.:/5 (45 download)
Download or read book Numerical Study of Laminar Vortex Breakdown in a Diverging Tube Apparatus written by Daryl O. Snyder and published by . This book was released on 1999 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Jon Ronald Fantin
Publisher :
ISBN 13 :
Total Pages : 47 pages
Book Rating : 4.:/5 (227 download)
Download or read book An Investigation of the Characteristics of Swirling Flow in a Diverging Tube written by Jon Ronald Fantin and published by . This book was released on 1968 with total page 47 pages. Available in PDF, EPUB and Kindle. Book excerpt: The effect of an imposed pressure gradient on the core of a vortex is examined both theoretically and experimentally. The test apparatus consisted of a vortex chamber and a diverging tube. The swirling flow was generated by means of adjustable vanes at the periphery of the vortex chamber and by introducing varying amounts of air. Pressure distributions were obtained along the wall of the tube for various flows and vane settings. In addition, the core of the vortex was photographed by introducing smoke at the axis of the vortex chamber. The theoretical and experimental results show the existence of standing waves arising from the vortex breakdown and the existence of critical conditions, depending on the ratio of the rotational and longitudinal velocity components, beyond which drastic changes of flow structure must occur. The theoretical results were found to be closely related to the observed phenomena. (Author).
Author : Kyle P. Judd
Publisher :
ISBN 13 :
Total Pages : 107 pages
Book Rating : 4.:/5 (115 download)
Download or read book Theoretical and Experimental Investigation of Vortex Breakdown in Diverging Streamtubes written by Kyle P. Judd and published by . This book was released on 1999 with total page 107 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Gale Edward Treiber
Publisher :
ISBN 13 :
Total Pages : 74 pages
Book Rating : 4.:/5 (227 download)
Download or read book An Experimental Investigation of the Effect of Adverse Pressure Gradient on Vortex Breakdown written by Gale Edward Treiber and published by . This book was released on 1973 with total page 74 pages. Available in PDF, EPUB and Kindle. Book excerpt: The results of an experimental investigation of the effect of adverse pressure gradient on the vortex breakdown phenomenon in a diverging tube are presented. Adverse pressure gradient was found to be as significant in determining the breakdown position as were the previously known parameters of Reynolds and circulation numbers. An approximate momentum analysis for predicting the vortex breakdown position was carried out which appears to hold promise as a breakdown predictor. (Modified author abstract).
Author : Turgut Sarpkaya
Publisher :
ISBN 13 :
Total Pages : 66 pages
Book Rating : 4.:/5 (227 download)
Download or read book An Experimental Investigation of the Vortex-breakdown Phenomenon written by Turgut Sarpkaya and published by . This book was released on 1970 with total page 66 pages. Available in PDF, EPUB and Kindle. Book excerpt: The results of an experimental investigation of the characteristics of stationary and travelling vortex breakdowns in swirling flow in a diverging cylindrical tube are presented and discussed. Basically, three types of vortex breakdown were observed, viz., double helix, spiral, and axisymmetric breakdown. The type and location of the stationary breakdowns were found to be dependent upon the Reynolds and circulation numbers of the flow. The breakdown bubble responded to gradual and abrupt changes in the upstream and downstream flow conditions in a manner analogous to the hydraulic jump in open-channel flow. The observations reported and the evidence presented revealed unmistakably that the vortex breakdown is a finite transition from a uniform state of swirling flow (supercritical) to one (subcritical) featuring a large standing wave, followed by standing wavelets, of finite amplitude. (Author).
Author : P A Davidson
Publisher : Oxford University Press
ISBN 13 : 0198886306
Total Pages : 529 pages
Book Rating : 4.1/5 (988 download)
Download or read book The Dynamics of Rotating Fluids written by P A Davidson and published by Oxford University Press. This book was released on 2024-06-28 with total page 529 pages. Available in PDF, EPUB and Kindle. Book excerpt: This textbook on rotating fluid dynamics combines a pedagogical development of theoretical ideas with a description and analysis of many of the fascinating examples of rotating flows found in nature. The book is self-contained, starting in Part I with introductory chapters on fluid dynamics and waves. The largest section of the book is Part II, where a broad theoretical framework is developed for rotating flows, including Ekman layers, inertial waves, Taylor columns, Rossby waves, precession, instabilities, rotating convection, vortex breakdown, and rotating turbulence. The book ends, in Part III, with an analysis of some naturally occurring rotating flows, including tornadoes and dust devils, tidal vortices, tropical cyclones, convection in planetary cores, zonal winds in planetary atmospheres, and astrophysical accretion discs. Davidson presents a unique combination of a deep but broad theoretical framework with a detailed discussion of many naturally occurring flows. Moreover, the book places great emphasis on the pedagogical development of theoretical ideas and the physical insight that brings.
Author : Touvia Miloh
Publisher : SIAM
ISBN 13 : 9780898712773
Total Pages : 554 pages
Book Rating : 4.7/5 (127 download)
Download or read book Mathematical Approaches in Hydrodynamics written by Touvia Miloh and published by SIAM. This book was released on 1991-01-01 with total page 554 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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 : R. E. Spall
Publisher :
ISBN 13 :
Total Pages : 28 pages
Book Rating : 4.:/5 (317 download)
Download or read book On a Criterion for Vortex Breakdown written by R. E. Spall and published by . This book was released on 1987 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Francis G. Novak
Publisher :
ISBN 13 : 9781423557371
Total Pages : 336 pages
Book Rating : 4.5/5 (573 download)
Download or read book An Experimental Investigation of Vortex Breakdown in Tubes at High Reynolds Numbers written by Francis G. Novak and published by . This book was released on 1998-09-01 with total page 336 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis deals with non-cavitating swirling flows with vortex breakdown in various tubes. Phenomenological and quantitative investigations were carried out at Reynolds numbers as high as 300,000. It was shown that a high Re(D) vortex transitions to its new state (breaks down) via a rapidly spinning spiral form, as demonstrated with 4,000 frame per second video, short exposure time (6 ns) imaging, and Digital Particle Image Velocimetry. Of the known types, the spiral emerges as the fundamental breakdown form and the axisymmetric bubble may now be regarded as a relatively low Re(D) occurrence that is bypassed at sufficiently high Re(D). Some new phenomena were observed at high Re(D): Extremely rapid spiral rotation (over 1,000 revolutions per second), core bifurcation, and changes in the sense of the spiral windings. Familiar features of breakdowns, such as the transition from a jet-like to wake-like axial velocity profile and the rapidly expanding vortex core, were observed in extensive time averaged velocity and turbulence results ascertained with Laser Doppler Velocimetry. However, a mean stagnation point and recirculation were absent in the highest Re(D) flow. The core meandering and stagnation point darting in the turbulent flow field were quantified and discussed in detail.
Author : Ronald J. Hugo
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (11 download)
Download or read book An Experimental Investigation of Vortex Breakdown in Multiphase Pipe Flow written by Ronald J. Hugo and published by . This book was released on 2003 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : James Henry Faler
Publisher :
ISBN 13 :
Total Pages : 84 pages
Book Rating : 4.E/5 ( download)
Download or read book Disrupted States of Vortex Flow and Vortex Breakdown written by James Henry Faler and published by . This book was released on 1977 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Jiunn-Chi Wu
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (11 download)
Download or read book Computational Study of Vortex Breakdown in Circular Tube written by Jiunn-Chi Wu and published by . This book was released on 1991 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : M. P. Escudier
Publisher :
ISBN 13 :
Total Pages : 8 pages
Book Rating : 4.:/5 (228 download)
Download or read book Vortex Breakdown: A Two-Stage Transition written by M. P. Escudier and published by . This book was released on 1983 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt: It is demonstrated that a large-scale isentropic transition between conjugate swirling flow states can occur with no change in the flow force and that both flow states are supercritical. It is argued that such a transition represents the first stage of vortex breakdown in a tube, the second stage being a non-isentropic transition in the nature of a hydraulic jump to the downstream subcritical state. The intermediate (supercritical) state consists of a zone of stagnant fluid surrounded by a region of potential flow. These two zones are separated by a layer of rotational fluid originating in the upstream vortex core. An outline is given of the analysis for an upstream flow modelled as a Rankine vortex. It is found that for any ratio of core-to-tube radii, breakdown (i.e. the first transition) occurs for a unique value of the swirl number Gamma/ pi r sub c U. In the limiting case of an infitesimally small core, the value is square root of 2, compared with the critical value 2.405. It is argued that this limit cannot represent free breakdown, which in consequence must have a different character from the tube-flow breakdown generally observed.
Author : James Henry Faler
Publisher :
ISBN 13 :
Total Pages : 70 pages
Book Rating : 4.E/5 ( download)
Download or read book An Experimental Map of the Internal Structure of a Vortex Breakdown written by James Henry Faler and published by . This book was released on 1977 with total page 70 pages. Available in PDF, EPUB and Kindle. Book excerpt:
