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Vortex Rings and Jets

Vortex Rings and Jets
Author : Daniel T. H. New,Simon C. M. Yu
Publisher : Springer
Release Date : 2015-03-26
Category : Technology & Engineering
Total pages :235
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In this book, recent developments in our understanding of fundamental vortex ring and jet dynamics will be discussed, with a view to shed light upon their near-field behaviour which underpins much of their far-field characteristics. The chapters provide up-to-date research findings by their respective experts and seek to link near-field flow physics of vortex ring and jet flows with end-applications in mind. Over the past decade, our knowledge on vortex ring and jet flows has grown by leaps and bounds, thanks to increasing use of high-fidelity, high-accuracy experimental techniques and numerical simulations. As such, we now have a much better appreciation and understanding on the initiation and near-field developments of vortex ring and jet flows under many varied initial and boundary conditions. Chapter 1 outlines the vortex ring pinch-off phenomenon and how it relates to the initial stages of jet formations and subsequent jet behaviour, while Chapter 2 takes a closer look at the behaviour resulting from vortex ring impingement upon solid boundaries and how the use of a porous surface alters the impingement process. Chapters 3 and 4 focus upon the formation of synthetic jets from vortex ring structures experimentally and numerically, the challenges in understanding the relationships between their generation parameters and how they can be utilized in flow separation control problems. Chapter 5 looks at the use of imposing selected nozzle trailing-edge modifications to effect changes upon the near-field dynamics associated with circular, noncircular and coaxial jets, with a view to control their mixing behaviour. And last but not least, Chapter 6 details the use of unique impinging jet configurations and how they may lend themselves towards greater understanding and operating efficacies in heat transfer problems. This book will be useful to postgraduate students and researchers alike who wish to get up to speed regarding the latest developments in vortex ring and jet flow behaviour and how their interesting flow dynamics may be put into good use in their intended applications.

Experimental Investigations Into Vortex Rings in Pulsed Jets

Experimental Investigations Into Vortex Rings in Pulsed Jets
Author : Erdoğan Aydemir
Publisher : Unknown
Release Date : 2012
Category :
Total pages :129
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Fluid Vortices

Fluid Vortices
Author : Beverley Green
Publisher : Springer Science & Business Media
Release Date : 1995-03-31
Category : Technology & Engineering
Total pages :880
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Fluid Vortices is a comprehensive, up-to-date, research-level overview covering all salient flows in which fluid vortices play a significant role. The various chapters have been written by specialists from North America, Europe and Asia, making for unsurpassed depth and breadth of coverage. Topics addressed include fundamental vortex flows (mixing layer vortices, vortex rings, wake vortices, vortex stability, etc.), industrial and environmental vortex flows (aero-propulsion system vortices, vortex-structure interaction, atmospheric vortices, computational methods with vortices, etc.), and multiphase vortex flows (free-surface effects, vortex cavitation, and bubble and particle interactions with vortices). The book can also be recommended as an advanced graduate-level supplementary textbook. The first nine chapters of the book are suitable for a one-term course; chapters 10--19 form the basis for a second one-term course.

Vortex Rings

Vortex Rings
Author : D. G. Akhmetov
Publisher : Springer Science & Business Media
Release Date : 2009-11-24
Category : Technology & Engineering
Total pages :149
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Vortex flow is one of the fundamental types of fluid and gas motion. These flows are the most spectacular in the form of concentrated vortices, characterized by the localization of vorticity (curl of velocity) in bounded regions of a space, beyond which the vorticity is either absent or rapidly falls down to zero. Concentrated vortices are often observed in nature, exemplified by atmospheric cyclones, whirlwinds and tornados, oceanic vortices, whirlpools on a water s- face, and ring vortices caused by explosive outburst of volcanoes. In technical - vices concentrated vortices form when flow separates from sharp edges of flying vehicles and ships. Among these are vortices flowing off the ends of airplane wings, and intentionally generated vortices for intensification of burning in c- bustion chambers, vortices in cyclonic devices used for mixing or separation of impurities in fluids and gases. One such remarkable and frequent type of conc- trated vortices is a vortex ring which constitutes a vortex tube closed into a t- oidal ring moving in a surrounding fluid like an isolated body out of contact with solid boundaries of the flow region if such boundaries exist. Formation and motion of vortex rings are important part of the dynamics of a continuum medium and have been studied for more than a century.

Proceedings of the 5th International Conference on Jets, Wakes and Separated Flows (ICJWSF2015)

Proceedings of the 5th International Conference on Jets, Wakes and Separated Flows (ICJWSF2015)
Author : Antonio Segalini
Publisher : Springer
Release Date : 2016-07-18
Category : Technology & Engineering
Total pages :620
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This volume collects various contributions from the 5th International Conference on Jets, Wakes and Separated Flows (ICJWSF2015) that took place in Stockholm during June 2015. Researchers from all around the world presented their latest results concerning fundamental and applied aspects of fluid dynamics. With its general character, the conference embraced many aspects of fluid dynamics, such as shear flows, multiphase flows and vortex flows, for instance. The structure of the present book reflects the variety of topics treated within the conference i.e. Jets, Wakes, Separated flows, Vehicle aerodynamics, Wall-bounded and confined flows, Noise, Turbomachinery flows, Multiphase and reacting flows, Vortex dynamics, Energy-related flows and a section dedicated to Numerical analyses.

Manipulation and Control of Jets in Crossflow

Manipulation and Control of Jets in Crossflow
Author : Ann R. Karagozian,Luca Cortelezzi,Alfredo Soldati
Publisher : Springer
Release Date : 2014-05-04
Category : Technology & Engineering
Total pages :309
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Fundamental Non-Reactive Jets in Crossflow and Other Jet Systems; Background on Modeling, Dynamical Systems, and Control; Reactive Jets in Crossflow and Multiphase Jets; Controlled Jets in Crossflow and Control via Jet Systems;

Transition and Mixing in Axisymmetric Jets and Vortex Rings

Transition and Mixing in Axisymmetric Jets and Vortex Rings
Author : Gary Arthur Allen
Publisher : Unknown
Release Date : 1984
Category : Jets
Total pages :302
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Transition and Mixing in Axisymmetric Jets and Vortex Rings

Transition and Mixing in Axisymmetric Jets and Vortex Rings
Author : Gary A. Allen
Publisher : Unknown
Release Date : 1986
Category :
Total pages :246
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Acoustic Control of Turbulent Jets

Acoustic Control of Turbulent Jets
Author : A.S. Ginevsky,Y.V. Vlasov,Evgeniĭ Vladimirovich Vlasov,R.K. Karavosov
Publisher : Springer Science & Business Media
Release Date : 2004-01-22
Category : Language Arts & Disciplines
Total pages :232
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This monograph presents recent results of experimental research relating to control of aerodynamic and acoustic characteristics of subsonic and supersonic turbulent jets by acoustic excitation of different intensity and frequency. Coherent structures in subsonic turbulent jets and their sensibility to harmonic acoustic excitation are studied, as well as the generation and suppression of turbulence in subsonic jets under acoustic excitation. The book covers active and passive methods of controlling supersonic non-isobaric jet characteristics and, in particular, suppression of discrete components of aerodynamic jet noise. Numerical simulation methods of subsonic turbulent jets are analyzed. Examples of practical realization of the presented methods are given in application to jet noise reduction of turbojet engines and to auto-oscillation suppression in wind tunnels with open test section.

Issues in Mechanical Engineering: 2011 Edition

Issues in Mechanical Engineering: 2011 Edition
Author : Anonim
Publisher : ScholarlyEditions
Release Date : 2012-01-09
Category : Technology & Engineering
Total pages :2526
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Issues in Mechanical Engineering / 2011 Edition is a ScholarlyEditions™ eBook that delivers timely, authoritative, and comprehensive information about Mechanical Engineering. The editors have built Issues in Mechanical Engineering: 2011 Edition on the vast information databases of ScholarlyNews.™ You can expect the information about Mechanical Engineering in this eBook to be deeper than what you can access anywhere else, as well as consistently reliable, authoritative, informed, and relevant. The content of Issues in Mechanical Engineering: 2011 Edition has been produced by the world’s leading scientists, engineers, analysts, research institutions, and companies. All of the content is from peer-reviewed sources, and all of it is written, assembled, and edited by the editors at ScholarlyEditions™ and available exclusively from us. You now have a source you can cite with authority, confidence, and credibility. More information is available at http://www.ScholarlyEditions.com/.

Turbulent Jets and Plumes

Turbulent Jets and Plumes
Author : Joseph Hun-wei Lee,Vincent Chu,Vincent H. Chu
Publisher : Springer Science & Business Media
Release Date : 2003-09-30
Category : Nature
Total pages :390
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CD-ROM contains: an interactive PC-based virtual-reality modelling software (VISJET 2.0 limited version).

Vortex Dynamics and Vortex Methods

Vortex Dynamics and Vortex Methods
Author : Christopher Radcliff Anderson,Claude Greengard
Publisher : American Mathematical Soc.
Release Date : 1991-12-23
Category : Science
Total pages :751
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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.

The Canadian Patent Office Record and Mechanics' Magazine

The Canadian Patent Office Record and Mechanics' Magazine
Author : Anonim
Publisher : Unknown
Release Date : 1886
Category : Copyright
Total pages :129
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Dry Scrubbing Technologies for Flue Gas Desulfurization

Dry Scrubbing Technologies for Flue Gas Desulfurization
Author : Barbara Toole-O'Neil,Ohio Coal Development Office
Publisher : Springer Science & Business Media
Release Date : 2012-12-06
Category : Science
Total pages :862
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Dry sulfurization processes offer the significant advantages of low capital and low operating costs when compared to wet desulfurization. They hold great potential for the economical reduction of sulfur emissions from power utilities that use high-sulfur coal. Dry Scrubbing Technologies for Flue Gas Desulfurization represents a body of research that was sponsored by the State of Ohio's Coal Development Office for the development of technologies that use coal in an economic, environmentally-sound manner. One of the project's major goals was the development of dry, calcium-based sorption processes for removing sulfur dioxide from the combustion gases produced by high-sulfur coal. Dry Scrubbing Technologies for Flue Gas Desulfurization highlights a number of fundamental research findings that have had a significant and lasting impact in terms of scientific understanding. For example, the experimental investigation of the upper-furnace sulfur capture obtained time-resolved kinetic data in less than 100 millisecond time-scales for the first time ever, thereby revealing the true nature of the ultra-fast and overlapping phenomena. This was accomplished through the development of a unique entrained flow reactor system. The authors also identify a number of important areas for future research, including reaction mechanisms, sorbent material, transport effects, modeling, and process development. Dry Scrubbing Technologies for Flue Gas Desulfurization will appeal to both chemical and environmental engineers who examine different ways touse coal in a more environmentally benign manner. It will make an essential reference for air pollution control researchers from coal, lime, cement, and utility industries; for government policy-makers and environmental regulatory agencies; and for those who teach graduate courses in environmental issues, pollution control technologies, and environmental policy.

Jets and Cavities

Jets and Cavities
Author : American Society of Mechanical Engineers. Winter Meeting
Publisher : Unknown
Release Date : 1985
Category : Cavitation
Total pages :225
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