Download or read book An Experimental Study of the Turbulent Wake Behind a Cone at Mach 5 written by William C. Ragsdale and published by . This book was released on 1966 with total page 166 pages. Available in PDF, EPUB and Kindle. Book excerpt: An experimental study of the turbulent wake behind a 9° adiabatic cone at Mach 5 has been carried out in the U.S. Naval Ordnance Laboratory Hypersonic Tunnel. Cone models with base diameters of 2 inches and 4 inches were mounted in the wind tunnel test section with fine wires. Pitot pressure, pressure on a small cone probe and total temperature were measured with probes mounted on a vertical traversing mechanism. The measured pressures and temperatures were used to calculate the Mach number, static pressure, static temperature, velocity and density in the wake.
Download or read book Turbulent Flows written by Jean Piquet and published by Springer Science & Business Media. This book was released on 2013-04-17 with total page 767 pages. Available in PDF, EPUB and Kindle. Book excerpt: obtained are still severely limited to low Reynolds numbers (about only one decade better than direct numerical simulations), and the interpretation of such calculations for complex, curved geometries is still unclear. It is evident that a lot of work (and a very significant increase in available computing power) is required before such methods can be adopted in daily's engineering practice. I hope to l"Cport on all these topics in a near future. The book is divided into six chapters, each· chapter in subchapters, sections and subsections. The first part is introduced by Chapter 1 which summarizes the equations of fluid mechanies, it is developed in C~apters 2 to 4 devoted to the construction of turbulence models. What has been called "engineering methods" is considered in Chapter 2 where the Reynolds averaged equations al"C established and the closure problem studied (§1-3). A first detailed study of homogeneous turbulent flows follows (§4). It includes a review of available experimental data and their modeling. The eddy viscosity concept is analyzed in §5 with the l"Csulting ~alar-transport equation models such as the famous K-e model. Reynolds stl"Css models (Chapter 4) require a preliminary consideration of two-point turbulence concepts which are developed in Chapter 3 devoted to homogeneous turbulence. We review the two-point moments of velocity fields and their spectral transforms (§ 1), their general dynamics (§2) with the particular case of homogeneous, isotropie turbulence (§3) whel"C the so-called Kolmogorov's assumptions are discussed at length.
Download or read book An Introduction to Turbulent Flow written by Jean Mathieu and published by Cambridge University Press. This book was released on 2000-06-26 with total page 388 pages. Available in PDF, EPUB and Kindle. Book excerpt: Most natural and industrial flows are turbulent. The atmosphere and oceans, automobile and aircraft engines, all provide examples of this ubiquitous phenomenon. In recent years, turbulence has become a very lively area of scientific research and application, attracting many newcomers who need a basic introduction to the subject. An Introduction to Turbulent Flow, first published in 2000, offers a solid grounding in the subject of turbulence, developing both physical insight and the mathematical framework needed to express the theory. It begins with a review of the physical nature of turbulence, statistical tools, and space and time scales of turbulence. Basic theory is presented next, illustrated by examples of simple turbulent flows and developed through classical models of jets, wakes, and boundary layers. A deeper understanding of turbulence dynamics is provided by spectral analysis and its applications. The final chapter introduces the numerical simulation of turbulent flows. This well-balanced text will interest graduate students in engineering, applied mathematics, and the physical sciences.
Download or read book Growth of the Turbulent Wake Behind a Supersonic Sphere written by Charles H. Murphy and published by . This book was released on 1962 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Radar Cross Section of Underdense Turbulent Wakes written by Ronald Louis Fante and published by . This book was released on 1973 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt: Use transport theory we have calculated the radar cross section of an underdense turbulent wake in the limit when the scale size of the turbulence is larger than the signal wavelength. We have found that for bistatic scatter the first Born approximation is valid, even if the wake is many photon mean-free paths in extent. However, neither the Born approximation nor the modified Born approximation is valid for the nonostatic radar cross section when the wake is many photon mean-free paths in extent. In this case a modified result, derived in this report, must be used.
Download or read book Wake Turbulence written by National Research Council and published by National Academies Press. This book was released on 2008-04-27 with total page 102 pages. Available in PDF, EPUB and Kindle. Book excerpt: Without major changes, the current air transportation system will be unable to accommodate the expected increase in demand by 2025. One proposal to address this problem is to use the Global Positioning System to enable aircraft to fly more closely spaced. This approach, however, might be limited by the wake turbulence problem, which can be a safety hazard when smaller aircraft follow relatively larger aircraft too closely. To examine how this potential hazard might be reduced, Congress in 2005 directed NASA to request a study from the NRC to assess the federal wake turbulence R&D program. This book provides a description of the problem, an assessment of the organizational challenges to addressing wake turbulence, an analysis of the technical challenges in wake turbulence, and a proposal for a wake turbulence program plan. A series of recommendations for addressing the wake turbulence challenge are also given.
Download or read book Turbulent Flow written by Peter S. Bernard and published by John Wiley & Sons. This book was released on 2002-08-19 with total page 516 pages. Available in PDF, EPUB and Kindle. Book excerpt: Provides unique coverage of the prediction and experimentation necessary for making predictions. * Covers computational fluid dynamics and its relationship to direct numerical simulation used throughout the industry. * Covers vortex methods developed to calculate and evaluate turbulent flows. * Includes chapters on the state-of-the-art applications of research such as control of turbulence.
Download or read book Turbulent Wake written by Paul E. Hardisty and published by . This book was released on 2019 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: A stark, eye-opening and exquisitely poignant new novel spanning the globe and probing the issues that define our times. As a young man comes to terms with his father's death, he is forced to face his own demons, and confront the possibility of change... 'This is a remarkably well-written, sophisticated novel in which the people and places all come alive on the page...' Literary Review 'Searing ... at times achieves the level of genuine poetry' Publishers Weekly Ethan Scofield returns to the place of his birth to bury his father. Hidden in one of the upstairs rooms of the old man's house he finds a strange manuscript, a collection of stories that seems to cover the whole of his father's turbulent life. As his own life starts to unravel, Ethan works his way through the manuscript, trying to find answers to the mysteries that have plagued him since he was a child. What happened to his little brother? Why was his mother taken from him? And why, in the end, when there was no one else left, did his own father push him away? Swinging from the coral cays of the Caribbean to the dangerous deserts of Yemen and the wild rivers of Africa, Turbulent Wake is a bewitching, powerful and deeply moving story of love and loss ... of the indelible damage we do to those closest to us and, ultimately, of the power of redemption in a time of change. 'The quality of Hardisty's writing and the underlying truth of his plots sets this above many other thrillers' West Australia 'Turbulent Wake is moving, it caused me to ache deep inside, oh, and it is also a rather beautiful read too' LoveReading 'The writing is sublime SO different from the Claymore Straker series but just as compelling - a round-the-world journey through a lifetime of regrets. Wow ' Off-the-Shelf Books 'If you like literary fiction with heart then you MUST read the stunning Turbulent Wake - powerful, evocative, profound; I savoured every word' Karen Cole 'Turbulent Wake is a truly beautiful story ... what a special book this is' Jen Meds Book Reviews 'Evocative, compelling, a pull-at-your-heartstrings page turning read A book that you will absorb into your very soul Go and get a copy today ' Crime Book Junkie 'Turbulent Wake is a beautifully written and atmospheric read that will stay with me for a long time ... The author's vivid descriptions are wonderful and I felt like I had a fly on the wall view of everything that was happening' Over the Rainbow Book Blog 'Powerful, evocative, profound; I savoured every word' Hair Past a Freckle 'Compelling and inspiring, it is an adventure, a journey, a exploration of life, a fascinating novel' Swirl & Thread 'Heartbreaking, honest, wonderful. This novel needs to be read by many, so they can see what damage they cause' Steph's Book Blog
Download or read book Turbulent Wake Development Behind Streamlined Bodies written by B. R. Ramaprian and published by . This book was released on 1981 with total page 346 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Structure of Complex Turbulent Shear Flow written by R. Dumas and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 462 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Symposium on structure of Complex turbulent shear flows was proposed by the "Comite National Fran
Download or read book Numerical Analysis and FORTRAN Program for the Computation of the Turbulent Wakes of Turbomachinery Rotor Blades Isolated Airfoils and Cascade of Airfoils written by C. Hah and published by . This book was released on 1982 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Engineering Turbulence Modelling and Experiments 4 written by D. Laurence and published by Elsevier. This book was released on 1999-04-14 with total page 975 pages. Available in PDF, EPUB and Kindle. Book excerpt: These proceedings contain the papers presented at the 4th International Symposium on Engineering Turbulence Modelling and Measurements held at Ajaccio, Corsica, France from 24-26 May 1999. It follows three previous conferences on the topic of engineering turbulence modelling and measurements. The purpose of this series of symposia is to provide a forum for presenting and discussing new developments in the area of turbulence modelling and measurements, with particular emphasis on engineering-related problems. Turbulence is still one of the key issues in tackling engineering flow problems. As powerful computers and accurate numerical methods are now available for solving the flow equations, and since engineering applications nearly always involve turbulence effects, the reliability of CFD analysis depends more and more on the performance of the turbulence models. Successful simulation of turbulence requires the understanding of the complex physical phenomena involved and suitable models for describing the turbulent momentum, heat and mass transfer. For the understanding of turbulence phenomena, experiments are indispensable, but they are equally important for providing data for the development and testing of turbulence models and hence for CFD software validation.
Download or read book Turbulent Shear Layers in Supersonic Flow written by Alexander J. Smits and published by Springer Science & Business Media. This book was released on 2006-05-11 with total page 418 pages. Available in PDF, EPUB and Kindle. Book excerpt: A good understanding of turbulent compressible flows is essential to the design and operation of high-speed vehicles. Such flows occur, for example, in the external flow over the surfaces of supersonic aircraft, and in the internal flow through the engines. Our ability to predict the aerodynamic lift, drag, propulsion and maneuverability of high-speed vehicles is crucially dependent on our knowledge of turbulent shear layers, and our understanding of their behavior in the presence of shock waves and regions of changing pressure. Turbulent Shear Layers in Supersonic Flow provides a comprehensive introduction to the field, and helps provide a basis for future work in this area. Wherever possible we use the available experimental work, and the results from numerical simulations to illustrate and develop a physical understanding of turbulent compressible flows.
Download or read book Eddy Structure Identification in Free Turbulent Shear Flows written by J.P. Bonnet and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 504 pages. Available in PDF, EPUB and Kindle. Book excerpt: The existence and crucial role played by large-scale, organized motions in turbulent flows are now recognized by industrial, applied and fundamental researchers alike. It has become increasingly evident that coherent structures influence mixing, noise, vibration, heat transfer, drag, etc... The accelera tion of the development of both experimental and computational programs devoted to this topic has been evident at several recent international meet ings. One of the first questions which experimentalists or numerical analysts are faced with is: how can these structures be separated from the background turbulence? This is a nontrivial task because the coherent structures are gen erally embedded in a random field and the technique used to determine when and where certain structures are passing, or their averaged characteristics (in the more probable or dominant role sense) is directly related to the definition of the coherent structure. Several methods or approaches are available and the choice of a particular one is generally dependent on the desired informa tion. This choice depends not only on the definition of the structure, but also on the experimental and numerical capabilities available to the researcher.
Download or read book Turbulent Shear Flows 6 written by Jean-Claude Andre and published by Springer Science & Business Media. This book was released on 2013-03-09 with total page 455 pages. Available in PDF, EPUB and Kindle. Book excerpt: Since the inaugural symposium at the Pennsylvania State University in 1977, the venues for the series of biennial symposia on turbulent shear flows have alternated between the USA and Europe. For the Sixth Symposium, the first to be held in France, the city of Toulouse proved a natura] choice, being a centre for the aerospace industry, meteorological research and higher education. The meeting was hosted by the Paul Sabatier University on the southern perimeter of the city, and there nearly 300 workers in the field of turbulence converged to pronounce upon, debate and absorb the current issues in turbulent shear flows and to enjoy the unfailing September sunshine. The meeting had attracted more than 200 offers of papers from which just over 100 full papers and about 20 shorter communications in open forums could be accommodated. The present volume contains 28 of the original symposium presentations selected by the editors. Each contribution has been revised by its authors - sometimes quite extensively -in the light of the oral presentation. It is our hope that the selection provides a substantial statement of permanent interest on current research in the five areas covered by this book, i.e. fundamentals and closures, scalar transport and geophysical flows, aerodynamic flows, complex flows, and numerical simulations.
Download or read book The Structure of Turbulent Shear Flow written by A. A. R. Townsend and published by Cambridge University Press. This book was released on 1976 with total page 450 pages. Available in PDF, EPUB and Kindle. Book excerpt: Develops a physical theory from the mass of experimental results, with revisions to reflect advances of recent years.
Download or read book Free Turbulent Mixing written by Philip Thomas Harsha and published by . This book was released on 1971 with total page 340 pages. Available in PDF, EPUB and Kindle. Book excerpt:
