A Rapid-Distortion-Theory Turbulence Model for Developed Unsteady Wall-Bounded Flow

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Publisher : Createspace Independent Publishing Platform
ISBN 13 : 9781725023673
Total Pages : 38 pages
Book Rating : 4.0/5 (236 download)

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Book Synopsis A Rapid-Distortion-Theory Turbulence Model for Developed Unsteady Wall-Bounded Flow by : National Aeronautics and Space Administration (NASA)

Download or read book A Rapid-Distortion-Theory Turbulence Model for Developed Unsteady Wall-Bounded Flow written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-08-10 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt: A new approach to turbulence modeling in unsteady developed flows has recently been introduced, based on results of rapid distortion theory. The approach involves closing the k-epsilon equations for the organized unsteady component of the flow by modeling local unsteadiness as a rapid distortion of the local structure of the parent turbulent flow, in terms of an effective strain parameter alpha(sub eff). In this paper, the phase-conditioned equations of motion are developed to accommodate a new unsteady dissipation model and local effects of the slow-relaxation time scale of the parent flow. The model equations are tested against measurements of the response of a fully-developed turbulent pipe flow to the superposition of sinusoidal streamwise oscillation. Good agreement is found between measurements and predictions over a wide range of frequencies of unsteadiness, indicating that this approach may be particularly well suited to modeling of unsteady turbulent flows which are perturbations about a well characterized mean. Brereton, G. J. and Mankbadi, R. R. Glenn Research Center NASA-TM-106249, ICOMP-93-22, E-7971, NAS 1.15:106249 NCC3-233; RTOP 505-90-5K...

A Rapid-distortion-theory Turbulence Model for Developed Unsteady Wall-bounded Flow

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ISBN 13 :
Total Pages : 24 pages
Book Rating : 4.:/5 (31 download)

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Book Synopsis A Rapid-distortion-theory Turbulence Model for Developed Unsteady Wall-bounded Flow by : G. J. Brereton

Download or read book A Rapid-distortion-theory Turbulence Model for Developed Unsteady Wall-bounded Flow written by G. J. Brereton and published by . This book was released on 1993 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:

A Rapid-distortion-theory Turbulence Model for Developed Unsteady Wall-bounded Flow

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ISBN 13 :
Total Pages : 22 pages
Book Rating : 4.:/5 (317 download)

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Book Synopsis A Rapid-distortion-theory Turbulence Model for Developed Unsteady Wall-bounded Flow by :

Download or read book A Rapid-distortion-theory Turbulence Model for Developed Unsteady Wall-bounded Flow written by and published by . This book was released on 1993 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt:

NASA Technical Memorandum

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ISBN 13 :
Total Pages : 492 pages
Book Rating : 4.:/5 (319 download)

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Book Synopsis NASA Technical Memorandum by :

Download or read book NASA Technical Memorandum written by and published by . This book was released on 1994 with total page 492 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Time Dependent Turbulence Modeling and Analytical Theories of Turbulence

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ISBN 13 :
Total Pages : 32 pages
Book Rating : 4.:/5 (31 download)

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Book Synopsis Time Dependent Turbulence Modeling and Analytical Theories of Turbulence by : R. Rubinstein

Download or read book Time Dependent Turbulence Modeling and Analytical Theories of Turbulence written by R. Rubinstein and published by . This book was released on 1993 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Scientific and Technical Aerospace Reports

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ISBN 13 :
Total Pages : 464 pages
Book Rating : 4.:/5 (3 download)

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Book Synopsis Scientific and Technical Aerospace Reports by :

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 464 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Applied Mechanics Reviews

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ISBN 13 :
Total Pages : 736 pages
Book Rating : 4.:/5 (26 download)

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Book Synopsis Applied Mechanics Reviews by :

Download or read book Applied Mechanics Reviews written by and published by . This book was released on 1969 with total page 736 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Near-wall Turbulent Flows

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Publisher : Elsevier Publishing Company
ISBN 13 :
Total Pages : 1072 pages
Book Rating : 4.F/5 ( download)

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Book Synopsis Near-wall Turbulent Flows by : Ronald M. C. So

Download or read book Near-wall Turbulent Flows written by Ronald M. C. So and published by Elsevier Publishing Company. This book was released on 1993 with total page 1072 pages. Available in PDF, EPUB and Kindle. Book excerpt: Knowledge of near-wall turbulence from experimental, theoretical and numerical sources is accumulating at an ever increasing rate. An overview of the latest important developments is reported and discussed in depth in this volume with the goal of stimulating closer dialogue between researchers in all areas of near-wall turbulence. The full text of 95 contributed papers cover a broad range of topics in near-wall turbulent flows that includes boundary layers, coherent structures, drag reduction, experimental methods, high speed flows, numerical simulations, transition and turbulent modeling. The innovativeness of the contributions demonstrates that near-wall turbulence remains a vital and dynamically evolving field with important technological consequences for the future.

Transition, Turbulence, and Noise

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Publisher : Springer Science & Business Media
ISBN 13 : 1461527449
Total Pages : 386 pages
Book Rating : 4.4/5 (615 download)

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Book Synopsis Transition, Turbulence, and Noise by : Reda R. Mankbadi

Download or read book Transition, Turbulence, and Noise written by Reda R. Mankbadi and published by Springer Science & Business Media. This book was released on 2013-11-27 with total page 386 pages. Available in PDF, EPUB and Kindle. Book excerpt: Turbulence takes place in most flow situations whethertheyoccur naturally or in technological systems. Therefore, considerable effort is being expended in an attempt to understand the phenomenon of turbulence. The recent discovery ofcoherent structure in turbulent shear flows and the modem developments in computer capabilities have revolutionized research work in turbulence. There is a strong evidence that the coherent structure in turbulent shear flows is reminiscent of nonlinear stability waves. As such, the interest in nonlinear stability waves has increased not only for the understandingofthe latterstages of the laminar-turbulent transition process, but also for understanding the coherent structures in turbulent flows. Also. the advances in computers have made direct numerical simulation possible at Low-Reynolds numbers and large-eddy simulation possible at high Reynolds numbers. This made first-principles prediction of turbulence-generated noise feasible. Therefore, this book aims at presenting a graduate-level introductory study of turbulence while accounting for such recent views of concern to researchers. This book is an outgrowth oflecture notes on the subject offered to graduate students in engineering. The book should be of interest to research engineers and graduatestudents in science and engineering. The theoretical basis presented is sufficient not only for studying the specialized literature on turbulence but also for theoretical investigations on the subject.

Monthly Catalog of United States Government Publications

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ISBN 13 :
Total Pages : 1282 pages
Book Rating : 4.:/5 (891 download)

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Book Synopsis Monthly Catalog of United States Government Publications by :

Download or read book Monthly Catalog of United States Government Publications written by and published by . This book was released on 1994 with total page 1282 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Monthly Catalogue, United States Public Documents

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ISBN 13 :
Total Pages : 1284 pages
Book Rating : 4.:/5 (31 download)

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Book Synopsis Monthly Catalogue, United States Public Documents by :

Download or read book Monthly Catalogue, United States Public Documents written by and published by . This book was released on 1994 with total page 1284 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Turbulence Modeling for CFD: CD-ROM

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ISBN 13 : 9781928729082
Total Pages : 522 pages
Book Rating : 4.7/5 (29 download)

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Book Synopsis Turbulence Modeling for CFD: CD-ROM by : David C. Wilcox

Download or read book Turbulence Modeling for CFD: CD-ROM written by David C. Wilcox and published by . This book was released on 2006 with total page 522 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Institute for Computational Mechanics in Propulsion, Seventh Annual Report, 1992

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ISBN 13 :
Total Pages : 64 pages
Book Rating : 4.:/5 (31 download)

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Book Synopsis Institute for Computational Mechanics in Propulsion, Seventh Annual Report, 1992 by : Charles E. Feiler

Download or read book Institute for Computational Mechanics in Propulsion, Seventh Annual Report, 1992 written by Charles E. Feiler and published by . This book was released on 1993 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Institute for Computational Mechanics in Propulsion (ICOMP)

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ISBN 13 :
Total Pages : 98 pages
Book Rating : 4.:/5 (31 download)

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Book Synopsis Institute for Computational Mechanics in Propulsion (ICOMP) by : Charles E. Feiler

Download or read book Institute for Computational Mechanics in Propulsion (ICOMP) written by Charles E. Feiler and published by . This book was released on 1994 with total page 98 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Proceedings

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ISBN 13 :
Total Pages : 850 pages
Book Rating : 4.E/5 ( download)

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Book Synopsis Proceedings by : Royal Society (Great Britain)

Download or read book Proceedings written by Royal Society (Great Britain) and published by . This book was released on 1995 with total page 850 pages. Available in PDF, EPUB and Kindle. Book excerpt: Publishes research papers in the mathematical and physical sciences. Continues: Proceedings of the Royal Society of London. Series A, Mathematical and physical sciences. Continued by: Proceedings. Mathematical, physical, and engineering sciences.

Government Reports Annual Index

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ISBN 13 :
Total Pages : 1794 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis Government Reports Annual Index by :

Download or read book Government Reports Annual Index written by and published by . This book was released on 1994 with total page 1794 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sections 1-2. Keyword Index.--Section 3. Personal author index.--Section 4. Corporate author index.-- Section 5. Contract/grant number index, NTIS order/report number index 1-E.--Section 6. NTIS order/report number index F-Z.

Theories of Turbulence

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Publisher : Springer
ISBN 13 : 3709125642
Total Pages : 377 pages
Book Rating : 4.7/5 (91 download)

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Book Synopsis Theories of Turbulence by : Martin Oberlack

Download or read book Theories of Turbulence written by Martin Oberlack and published by Springer. This book was released on 2014-05-04 with total page 377 pages. Available in PDF, EPUB and Kindle. Book excerpt: The term "turbulence” is used for a large variety of dynamical phenomena of fluids in motion whenever the details of the flow appear to be random and average properties are of primary interest. Just as wide ranging are the theoretical methods that have been applied towards a better understanding of fluid turbulence. In this book a number of these methods are described and applied to a broad range of problems from the transition to turbulence to asymptotic turbulence when the inertial part of the spectrum is fully developed. Statistical as well as nonstatistical treatments are presented, but a complete coverage of the subject is not attempted. The book will be of interest to scientists and engineers who wish to familiarize themselves with modern developments in theories of turbulence. The fact that the properties of turbulent fluid flow are addressed from very different points of view makes this volume rather unique among presently available books on turbulence.