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Interaction of Disturbances in Shear Flows

Interaction of Disturbances in Shear Flows PDF Author: Viktor V. Babenko
Publisher: Elsevier
ISBN: 0443241473
Category : Mathematics
Languages : en
Pages : 538

Book Description
Interaction of Disturbances in Shear Flows aims to provide a comprehensive, in-depth overview of the current state of knowledge on the subject. Authored by a recognized expert with decades of experience and many software patents to his credit, the volume covers advances in computational fluid dynamics to showcase innovative ways to apply physical measurements and visualization patterns to solve various aero- and hydrodynamic problems. It also delves into analytical methodologies to compare and contrast with the theoretical models most commonly used in the field. Additionally, it demonstrates the significance of comprehending and managing disturbances in shear flows, discussing practical applications of the research to optimize the design of aircraft, automotive vehicles, and marine vessels, with a strong emphasis on enhancing aeroand hydrodynamic efficiency, fuel economy, and the reduction of harmful emissions. Academia and industry readers alike will find this a useful resource to equip themselves with the tools needed to understand and address practical engineering challenges encountered in their studies or work. Proposes a bionic approach for the control of shear flows Presents data obtained through flow visualization using the tellurium method and multicolored tinted jets Offers a complete picture of shear flows, taking an interdisciplinary approach Applies practical solutions to problems being studied both in academia and industry

Interaction of Disturbances in Shear Flows

Interaction of Disturbances in Shear Flows PDF Author: Viktor V. Babenko
Publisher: Elsevier
ISBN: 0443241473
Category : Mathematics
Languages : en
Pages : 538

Book Description
Interaction of Disturbances in Shear Flows aims to provide a comprehensive, in-depth overview of the current state of knowledge on the subject. Authored by a recognized expert with decades of experience and many software patents to his credit, the volume covers advances in computational fluid dynamics to showcase innovative ways to apply physical measurements and visualization patterns to solve various aero- and hydrodynamic problems. It also delves into analytical methodologies to compare and contrast with the theoretical models most commonly used in the field. Additionally, it demonstrates the significance of comprehending and managing disturbances in shear flows, discussing practical applications of the research to optimize the design of aircraft, automotive vehicles, and marine vessels, with a strong emphasis on enhancing aeroand hydrodynamic efficiency, fuel economy, and the reduction of harmful emissions. Academia and industry readers alike will find this a useful resource to equip themselves with the tools needed to understand and address practical engineering challenges encountered in their studies or work. Proposes a bionic approach for the control of shear flows Presents data obtained through flow visualization using the tellurium method and multicolored tinted jets Offers a complete picture of shear flows, taking an interdisciplinary approach Applies practical solutions to problems being studied both in academia and industry

Wave Interactions and Fluid Flows

Wave Interactions and Fluid Flows PDF Author: Alex D. D. Craik
Publisher: Cambridge University Press
ISBN: 9780521368292
Category : Mathematics
Languages : en
Pages : 340

Book Description
Wave Interactions and Fluid Flows is a coherent, up-to-date and comprehensive account of theory and experiment on wave-interaction phenomena, both in fluids at rest and in shear flows. On the one hand, this includes water waves, internal waves, their evolution and interaction and associated wave-driven mean flows; on the other, phenomena of nonlinear hydrodynamic stability, especially those leading to the onset of turbulence. Close similarities - and crucial differences - exist between these two classes of phenomena and their treatment in this single study provides a particularly valuable bridge between more specialised, but related, disciplines. As a result, this unique book will appeal to researchers and graduate students of fluid mechanics in its widest sense, including the study of wave-interaction phenomena in such diverse fields as meteorology, aeronautical and hydraulic engineering, optics, solar physics and population dynamics. Dr Craik is an active researcher of long-standing at the University of St Andrews and has wide experience in the field of fluid mechanics.

Statistical Fluid Mechanics

Statistical Fluid Mechanics PDF Author: Andre? Sergeevich Monin
Publisher: Courier Corporation
ISBN: 0486458830
Category : Science
Languages : en
Pages : 786

Book Description
"If ever a book on turbulence could be called definitive," declared Science, "it is this book by two of Russia's most eminent and productive scientists in turbulence, oceanography, and atmospheric physics." Noted for its clarity as well as its comprehensive treatment, this two-volume set serves as text or reference. 1971 edition.

Physics of Transitional Shear Flows

Physics of Transitional Shear Flows PDF Author: Andrey V. Boiko
Publisher: Springer Science & Business Media
ISBN: 9400724985
Category : Science
Languages : en
Pages : 272

Book Description
Starting from fundamentals of classical stability theory, an overview is given of the transition phenomena in subsonic, wall-bounded shear flows. At first, the consideration focuses on elementary small-amplitude velocity perturbations of laminar shear layers, i.e. instability waves, in the simplest canonical configurations of a plane channel flow and a flat-plate boundary layer. Then the linear stability problem is expanded to include the effects of pressure gradients, flow curvature, boundary-layer separation, wall compliance, etc. related to applications. Beyond the amplification of instability waves is the non-modal growth of local stationary and non-stationary shear flow perturbations which are discussed as well. The volume continues with the key aspect of the transition process, that is, receptivity of convectively unstable shear layers to external perturbations, summarizing main paths of the excitation of laminar flow disturbances. The remainder of the book addresses the instability phenomena found at late stages of transition. These include secondary instabilities and nonlinear features of boundary-layer perturbations that lead to the final breakdown to turbulence. Thus, the reader is provided with a step-by-step approach that covers the milestones and recent advances in the laminar-turbulent transition. Special aspects of instability and transition are discussed through the book and are intended for research scientists, while the main target of the book is the student in the fundamentals of fluid mechanics. Computational guides, recommended exercises, and PowerPoint multimedia notes based on results of real scientific experiments supplement the monograph. These are especially helpful for the neophyte to obtain a solid foundation in hydrodynamic stability. To access the supplementary material go to extras.springer.com and type in the ISBN for this volume.

Sound-Flow Interactions

Sound-Flow Interactions PDF Author: Y. Auregan
Publisher: Springer
ISBN: 3540458808
Category : Science
Languages : en
Pages : 286

Book Description
The coupling between acoustic waves and fluid flow motion is basically nonlinear, with the result that flow and sound modify themselves reciprocally with respect to generation and propagation properties. As a result this problem is investigated by many different communities, such as applied mathematics, acoustics and fluid mechanics. This book is the result of an international school which was held to discuss the foundation of sound--flow interactions, to share expertise and methodologies, and to promote cross-fertilization between the different disciplines involved. It consists essentially of a set of pedagogical lectures and is meant to serve not only as a compact source of reference for the experienced researcher but also as an advanced textbook for postgraduate students, and nonspecialists wishing to familiarize themselves in depth, at a research level, with this fascinating subject.

Scientific and Technical Aerospace Reports

Scientific and Technical Aerospace Reports PDF Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 568

Book Description


Boundary Layer Flow Over Elastic Surfaces

Boundary Layer Flow Over Elastic Surfaces PDF Author: Viktor V. Babenko
Publisher: Butterworth-Heinemann
ISBN: 0123948061
Category : Science
Languages : en
Pages : 635

Book Description
Coverage includes: Experimental findings around coherent vortical structures (CVS) in turbulent boundary layers and methods of controlling them Static and dynamic mechanical characteristics of elastic composite coatings, as well as new techniques and devices developed for their measurement Combined methods of flow control and drag reduction, including the effect of injection of polymer solutions, elastic coatings and generated longitudinal vortical structures on hydrodynamic resistance Intended as a reference for senior engineers and researchers concerned with the drag reduction and the dynamics of turbulent boundary layer flows, Boundary Layer Flow over Elastic Surfaces provides a unique source of information on compliant surface drag reduction and the experimental techniques around it that have shown measurable and repeatable improvements over recent years.

IUTAM Symposium on Nonlinear Instability and Transition in Three-Dimensional Boundary Layers

IUTAM Symposium on Nonlinear Instability and Transition in Three-Dimensional Boundary Layers PDF Author: Peter W. Duck
Publisher: Springer Science & Business Media
ISBN: 9400917007
Category : Science
Languages : en
Pages : 458

Book Description
Most fluid flows of practical importance are fully three-dimensional, so the non-linear instability properties of three-dimensional flows are of particular interest. In some cases the three-dimensionality may have been caused by a finite amplitude disturbance whilst, more usually, the unperturbed state is three-dimensional. Practical applications where transition is thought to be associated with non-linearity in a three- dimensional flow arise, for example, in aerodynamics (swept wings, engine nacelles, etc.), turbines and aortic blood flow. Here inviscid `cross-flow' disturbances as well as Tollmien-Schlichting and Görtler vortices can all occur simultaneously and their mutual non-linear behaviour must be understood if transition is to be predicted. The non-linear interactions are so complex that usually fully numerical or combined asymptotic/numerical methods must be used. Moreover, in view of the complexity of the instability processes, there is also a growing need for detailed and accurate experimental information. Carefully conducted tests allow us to identify those elements of a particular problem which are dominant. This assists in both the formulation of a relevant theoretical problem and the subsequent physical validation of predictions. It should be noted that the demands made upon the skills of the experimentalist are high and that the tests can be extremely sophisticated - often making use of the latest developments in flow diagnostic techniques, automated high speed data gathering, data analysis, fast processing and presentation.

Advances in Turbulence Studies

Advances in Turbulence Studies PDF Author: Yeshajahu Unger
Publisher: AIAA
ISBN: 9781600864032
Category : Turbulence
Languages : en
Pages : 386

Book Description


Origin of Turbulence

Origin of Turbulence PDF Author: Hua-Shu Dou
Publisher: Springer Nature
ISBN: 9811900876
Category : Technology & Engineering
Languages : en
Pages : 503

Book Description
This book presents the new discovery of the origin of turbulence from Navier–Stokes equations. The fully developed turbulence is found to be composed of singularities of flow field. The mechanisms of flow stability and turbulent transition are described using the energy gradient theory, which states all the flow instability and breakdown resulted from the gradient of the total mechanical energy normal to the flow direction. This approach is universal for flow instability in Newtonian flow and non-Newtonian flow. The theory has been used to solve several problems, such as plane and pipe Poiseuille flows, plane Couette flow, Taylor–Couette flow, flows in straight coaxial annulus, flows in curved pipes and ducts, thermal convection flow, viscoelastic flow, and magnet fluid flow, etc. The theory is in agreement with results from numerical simulations and experiments. The analytical method used in this book is novel and is different from the traditional approaches. This book includes the fundamental basics of flow stability and turbulent transition, the essentials of the energy gradient theory, and the applications of the theory to several practical problems. This book is suitable for researchers and graduate students.