Experimental And Theoretical Study Of Instabilities In Mhd Duct Flows With Inflectional Velocity Profiles
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Experimental And Theoretical Study Of Instabilities In Mhd Duct Flows With Inflectional Velocity Profiles
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Author : Jack Nathaniel Young
language : en
Publisher:
Release Date : 2019
Experimental And Theoretical Study Of Instabilities In Mhd Duct Flows With Inflectional Velocity Profiles written by Jack Nathaniel Young and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019 with categories.
This theoretical and experimental study focuses on instability in magnetohydrodynamic liquid metal fusion blanket duct flows with inflectional velocity profiles, the understanding of which is crucial to predictions of transitions between flow regimes in blanket systems. Flow regimes strongly affect heat and material advection across a poloidal blanket duct, and in the hopes of enhancing our capability to predict flow regimes and transport behavior in a wide range of blanket conditions, this study strives to uncover the mechanism behind MHD duct flow destabilization. This research builds on a large volume of theoretical, numerical and experimental work suggesting bulk instability and a two-stage mechanism as the most likely culprit for flow destabilization in these systems and supplies a much needed set of detailed experimental data to help validate numerical simulations and improve predictions of critical flow parameters, which have historically varied across orders of magnitude depending on the assumptions used to determine stability criteria for these flows. The derivation of an exact analytical solution for a fully-developed laminar electrically driven MHD duct flow with two wall jets is presented, which provides useful velocity field data that can help identify the laminar regime and helps determine the conditions required for quasi-two-dimensional (Q2D) flow. This is followed by a description of quasi-two-dimensional simulations of a duct-like electrically driven MHD cavity flow performed in parallel with an experiment with the same geometry and boundary conditions. Results from these two efforts are compared with the analytical solution and one another as a validation of their data, and key details of the flow dynamics and flow statistics are explored and used to identify the different types of instability present under a variety of conditions. The combination of these three avenues of research are leveraged to determine exactly how instabilities form in this system and through what stages they evolve as the flow approaches a transition to Q2D turbulence. The results are then used to develop tools that can more easily detect these regimes of instability from simple duct flow diagnostics.
Nuclear Science Abstracts
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Author :
language : en
Publisher:
Release Date : 1967-10
Nuclear Science Abstracts written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1967-10 with Nuclear energy categories.
Scientific And Technical Aerospace Reports
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Author :
language : en
Publisher:
Release Date : 1977
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 1977 with Aeronautics categories.
Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
Magnetohydrodynamics
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Author : Sergei S. Molokov
language : en
Publisher: Springer Science & Business Media
Release Date : 2007-08-26
Magnetohydrodynamics written by Sergei S. Molokov 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 2007-08-26 with Science categories.
This book revises the evolution of ideas in various branches of magnetohydrodynamics (astrophysics, earth and solar dynamos, pinch, MHD turbulence and liquid metals) and reviews current trends and challenges. Uniquely, it contains the review articles on the development of the subject by pioneers in the field as well as leading experts, not just in one, but in various branches of magnetohydrodynamics, such as liquid metals, astrophysics, dynamo and pinch.
International Aerospace Abstracts
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Author :
language : en
Publisher:
Release Date : 1996
International Aerospace Abstracts written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1996 with Aeronautics categories.
Non Newtonian Flow And Applied Rheology
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Author : R. P. Chhabra
language : en
Publisher: Elsevier
Release Date : 2011-04-08
Non Newtonian Flow And Applied Rheology written by R. P. Chhabra and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011-04-08 with Science categories.
This book bridges the gap between the theoretical work of the rheologist, and the practical needs of those who have to design and operate the systems in which these materials are handled or processed. It is an established and important reference for senior level mechanical engineers, chemical and process engineers, as well as any engineer or scientist who needs to study or work with these fluids, including pharmaceutical engineers, mineral processing engineers, medical researchers, water and civil engineers. This new edition covers a considerably broader range of topics than its predecessor, including computational fluid dynamics modelling techniques, liquid/solid flows and applications to areas such as food processing, among others. * Written by two of the world's leading experts, this is the only dedicated non-Newtonian flow reference in print. * Since first publication significant advances have been made in almost all areas covered in this book, which are incorporated in the new edition, including developments in CFD and computational techniques, velocity profiles in pipes, liquid/solid flows and applications to food processing, and new heat/mass transfer methods and models. * Covers both basic rheology and the fluid mechanics of NN fluids ? a truly self-contained reference for anyone studying or working with the processing and handling of fluids
Applied Mechanics Reviews
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Author :
language : en
Publisher:
Release Date : 1987
Applied Mechanics Reviews written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1987 with Mechanics, Applied categories.
Introduction To Hydrodynamic Stability
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Author : P. G. Drazin
language : en
Publisher: Cambridge University Press
Release Date : 2002-09-09
Introduction To Hydrodynamic Stability written by P. G. Drazin and has been published by Cambridge University Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2002-09-09 with Science categories.
Instability of flows and their transition to turbulence are widespread phenomena in engineering and the natural environment, and are important in applied mathematics, astrophysics, biology, geophysics, meteorology, oceanography and physics as well as engineering. This is a textbook to introduce these phenomena at a level suitable for a graduate course, by modelling them mathematically, and describing numerical simulations and laboratory experiments. The visualization of instabilities is emphasized, with many figures, and in references to more still and moving pictures. The relation of chaos to transition is discussed at length. Many worked examples and exercises for students illustrate the ideas of the text. Readers are assumed to be fluent in linear algebra, advanced calculus, elementary theory of ordinary differential equations, complex variables and the elements of fluid mechanics. The book is aimed at graduate students but will also be very useful for specialists in other fields.
Turbulence In Fluids
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Author : Marcel Lesieur
language : en
Publisher: Springer Science & Business Media
Release Date : 2012-12-06
Turbulence In Fluids written by Marcel Lesieur 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 2012-12-06 with Technology & Engineering categories.
Turbulence is a dangerous topic which is often at the origin of serious fights in the scientific meetings devoted to it since it represents extremely different points of view, all of which have in common their complexity, as well as an inability to solve the problem. It is even difficult to agree on what exactly is the problem to be solved. Extremely schematically, two opposing points of view have been advocated during these last ten years: the first one is "statistical", and tries to model the evolution of averaged quantities of the flow. This com has followed the glorious trail of Taylor and Kolmogorov, munity, which believes in the phenomenology of cascades, and strongly disputes the possibility of any coherence or order associated to turbulence. On the other bank of the river stands the "coherence among chaos" community, which considers turbulence from a purely deterministic po int of view, by studying either the behaviour of dynamical systems, or the stability of flows in various situations. To this community are also associated the experimentalists who seek to identify coherent structures in shear flows.
Mining Goes Digital
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Author : Christoph Mueller
language : en
Publisher: CRC Press
Release Date : 2019-05-22
Mining Goes Digital written by Christoph Mueller and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019-05-22 with Technology & Engineering categories.
The conferences on ‘Applications for Computers and Operations Research in the Minerals Industry’ (APCOM) initially focused on the optimization of geostatistics and resource estimation. Several standard methods used in these fields were presented in the early days of APCOM. While geostatistics remains an important part, information technology has emerged, and nowadays APCOM not only focuses on geostatistics and resource estimation, but has broadened its horizon to Information and Communication Technology (ICT) in the mineral industry. Mining Goes Digital is a collection of 90 high quality, peer reviewed papers covering recent ICT-related developments in: - Geostatistics and Resource Estimation - Mine Planning - Scheduling and Dispatch - Mine Safety and Mine Operation - Internet of Things, Robotics - Emerging Technologies - Synergies from other industries - General aspects of Digital Transformation in Mining Mining Goes Digital will be of interest to professionals and academics involved or interested in the above-mentioned areas.