Unsteady Effects Of Shock Wave Induced Separation

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Unsteady Effects of Shock Wave induced Separation

Author : Piotr Doerffer
Publisher : Springer Science & Business Media
ISBN 13 : 3642030041
Total Pages : 350 pages
Book Rating : 4.6/5 (42 download)

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Book Synopsis Unsteady Effects of Shock Wave induced Separation by : Piotr Doerffer

Download or read book Unsteady Effects of Shock Wave induced Separation written by Piotr Doerffer and published by Springer Science & Business Media. This book was released on 2010-11-25 with total page 350 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume contains description of experimental and numerical results obtained in the UFAST project. The goal of the project was to generate experiment data bank providing unsteady characteristics of the shock boundary layer interaction. The experiments concerned basic-reference cases and the cases with application of flow control devices. Obtained new data bank have been used for the comparison with available simulation techniques, starting from RANS, through URANS, LES and hybrid RANS-LES methods. New understanding of flow physics as well as ability of different numerical methods in the prediction of such unsteady flow phenomena will be discussed.

Unsteady Effects of Shock Wave induced Separation

Author : Piotr Doerffer
Publisher : Springer
ISBN 13 : 9783642030031
Total Pages : 336 pages
Book Rating : 4.0/5 (3 download)

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Book Synopsis Unsteady Effects of Shock Wave induced Separation by : Piotr Doerffer

Download or read book Unsteady Effects of Shock Wave induced Separation written by Piotr Doerffer and published by Springer. This book was released on 2010-12-09 with total page 336 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume contains description of experimental and numerical results obtained in the UFAST project. The goal of the project was to generate experiment data bank providing unsteady characteristics of the shock boundary layer interaction. The experiments concerned basic-reference cases and the cases with application of flow control devices. Obtained new data bank have been used for the comparison with available simulation techniques, starting from RANS, through URANS, LES and hybrid RANS-LES methods. New understanding of flow physics as well as ability of different numerical methods in the prediction of such unsteady flow phenomena will be discussed.

UFAST Experiments Data Bank

Author : Piotr Doerffer
Publisher :
ISBN 13 : 9788388237461
Total Pages : 352 pages
Book Rating : 4.2/5 (374 download)

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Book Synopsis UFAST Experiments Data Bank by : Piotr Doerffer

Download or read book UFAST Experiments Data Bank written by Piotr Doerffer and published by . This book was released on 2009 with total page 352 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Shock Wave-Boundary-Layer Interactions

Author : Holger Babinsky
Publisher : Cambridge University Press
ISBN 13 : 1139498649
Total Pages : 481 pages
Book Rating : 4.1/5 (394 download)

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Book Synopsis Shock Wave-Boundary-Layer Interactions by : Holger Babinsky

Download or read book Shock Wave-Boundary-Layer Interactions written by Holger Babinsky and published by Cambridge University Press. This book was released on 2011-09-12 with total page 481 pages. Available in PDF, EPUB and Kindle. Book excerpt: Shock wave-boundary-layer interaction (SBLI) is a fundamental phenomenon in gas dynamics that is observed in many practical situations, ranging from transonic aircraft wings to hypersonic vehicles and engines. SBLIs have the potential to pose serious problems in a flowfield; hence they often prove to be a critical - or even design limiting - issue for many aerospace applications. This is the first book devoted solely to a comprehensive, state-of-the-art explanation of this phenomenon. It includes a description of the basic fluid mechanics of SBLIs plus contributions from leading international experts who share their insight into their physics and the impact they have in practical flow situations. This book is for practitioners and graduate students in aerodynamics who wish to familiarize themselves with all aspects of SBLI flows. It is a valuable resource for specialists because it compiles experimental, computational and theoretical knowledge in one place.

On the Scaling and Unsteadiness of Shock Induced Separation

Author : Louis Jacques Souverein
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (13 download)

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Book Synopsis On the Scaling and Unsteadiness of Shock Induced Separation by : Louis Jacques Souverein

Download or read book On the Scaling and Unsteadiness of Shock Induced Separation written by Louis Jacques Souverein and published by . This book was released on with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Shock wave boundary layer interactions (SWBLI) are a common phenomenon in transonic and supersonic flows. The presence of shock waves, induced by specific geometrical configurations, cause a rapid increase of the pressure, wich can lead to flow separation. Examples of such interaction are found in amongts other rocket engine nozzles, on re-entry vehicles, in supersonic and hypersonic engine intakes, and at the tips of compressor and turbine blades. The interactions are important factors in vehicle development. Both the separated flow and the induced shock have been shows to be highly unsteady, causing pressure fluctuations and thermal loading. This generally leads to a degraded performance and possibly structural failure. The current work therefore aims to improve the physical understanding of the mechanisms that govern the interaction, with a special attention for the flow organisation and for the sources of the unsteadiness of the induced shock. Additioinally, it is verified wether the interaction can be controlled by means of upstream fluid injection. PIV measurements were performed, comparing several interactions for a range of shock intensities for a number of Mach and Reynolds numbers. It is proposed that relative importance of the different unsteadiness mechanisms (upstream, downstream) shifts with the imposed shock intensity. The onset of separation is Reynolds number independent for turbulent boundary layers. The interaction length is however governed by the both the Reynolds number and the Mach number.

An Experimental Investigation of Unsteady Separation Shock Wave Motion in a Plume-induced, Separated Flowfield

Author : Russell Jay Shaw
Publisher :
ISBN 13 :
Total Pages : 852 pages
Book Rating : 4.:/5 (369 download)

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Book Synopsis An Experimental Investigation of Unsteady Separation Shock Wave Motion in a Plume-induced, Separated Flowfield by : Russell Jay Shaw

Download or read book An Experimental Investigation of Unsteady Separation Shock Wave Motion in a Plume-induced, Separated Flowfield written by Russell Jay Shaw and published by . This book was released on 1995 with total page 852 pages. Available in PDF, EPUB and Kindle. Book excerpt: An experimental investigation of the unsteady separation shock wave motion in plume-induced, boundary layer separated (PIBLS) flowfields has been conducted. The PIBLS flowfields were created in a blowdown-type wind tunnel designed specifically to produce PIBLS in a planar, two-stream, supersonic flow. In this unique wind tunnel, separation of the freestream boundary layer upstream of the base plane was accomplished by utilizing an angle-induced separation geometry in the wind tunnel design in addition to operating the wind tunnel at jet-to-freestream static pressure ratios (JSPRs) greater than unity. In essence, the wind tunnel design consisted of a Mach 1.5 inner-jet flow angled at 40 degrees with respect to a Mach 2.5 freestream flow in the presence of a 0.5-inch thick base height. By throttling the stagnation pressure of the inner-jet flow, PIBLS flowfields, with nominal separation point locations ranging from two (JSPR $approx$ 1.7) to six (JSPR $approx$ 2.3) or more boundary layer thicknesses upstream of the base plane, were produced in the wind tunnel. The separation process associated with all of these PIBLS flowfields was observed by flow visualization techniques to be unsteady, and the separation shock wave that accompanied the separation process was found to exhibit large-scale (on the order of the incoming boundary layer thickness) motion in the streamwise direction. The primary objective of the current research program was to understand the unsteady characteristics of the separation shock wave motion present in the PIBLS flowfields by obtaining and analyzing detailed, non-intrusive experimental data including flow visualization photographs, surface flow visualization patterns, mean static pressure measurements, and instantaneous pressure fluctuation measurements throughout the region of shock wave motion (called the intermittent region). Since the vast majority of the statistical properties of the shock wave motion were computed from the fast-response pressure transducer measurements, the instantaneous pressure fluctuation measurements were of primary importance in the study. In recent years, similar measurements have been used to characterize the unsteady separation shock wave motion in shock wave boundary/layer interactions (SWBLIs) produced by solid boundary protuberances (i.e., compression ramps, circular cylinders, sharp- and blunt-edged fins, etc.). However, such data are virtually nonexistent in a plume-induced interaction and, therefore, the current data are quite unique. From standard time series and conditional analysis methods applied to the pressure fluctuation measurements, the statistical properties of the shock wave motion were determined over the intermittent region. The shock wave motion was found to be responsible for producing large pressure fluctuations over the intermittent region in these PIBLS flowfields. The standard deviation of the pressure fluctuations, when nondimensionalized by the local mean pressure, reached a maximum value of 0.22 near the middle of the intermittent region. The strength of the unsteady shock wave motion, determined as the ratio of the maximum standard deviation of the pressure fluctuations over the intermittent region to the mean pressure difference across the intermittent region, was calculated to be 0.43 for the current PIBLS flowfields. Both of these quantities demonstrate that the unsteady pressure loading caused by the shock wave motion has essentially the same magnitude in plume-induced separated flowfields as in SWBLI flowfields produced by solid boundary protuberances.

Unsteady Separation in Shock Wave Turbulent Boundary Layer Interaction

Author : R. A. Gramann
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (11 download)

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Book Synopsis Unsteady Separation in Shock Wave Turbulent Boundary Layer Interaction by : R. A. Gramann

Download or read book Unsteady Separation in Shock Wave Turbulent Boundary Layer Interaction written by R. A. Gramann and published by . This book was released on 1986 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Shock Wave Interactions

Author : Konstantinos Kontis
Publisher : Springer
ISBN 13 : 3319731807
Total Pages : 408 pages
Book Rating : 4.3/5 (197 download)

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Book Synopsis Shock Wave Interactions by : Konstantinos Kontis

Download or read book Shock Wave Interactions written by Konstantinos Kontis and published by Springer. This book was released on 2018-03-28 with total page 408 pages. Available in PDF, EPUB and Kindle. Book excerpt: This edited monograph contains the proceedings of the International Shock Interaction Symposium, which emerged as an heir to both the Mach Reflection and Shock Vortex Interaction Symposia. These scientific biannual meetings provide an ideal platform to expose new developments and discuss recent challenges in the field of shock wave interaction phenomena. The goal of the symposia is to offer a forum for international interaction between young and established scientists in the field of shock and blast wave interaction phenomena. The target audience of this book comprises primarily researchers and experts in the field of shock waves, but the book may also be beneficial for young scientists and graduate students alike.

31st International Symposium on Shock Waves 1

Author : Akihiro Sasoh
Publisher : Springer
ISBN 13 : 3319910205
Total Pages : 1188 pages
Book Rating : 4.3/5 (199 download)

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Book Synopsis 31st International Symposium on Shock Waves 1 by : Akihiro Sasoh

Download or read book 31st International Symposium on Shock Waves 1 written by Akihiro Sasoh and published by Springer. This book was released on 2019-03-21 with total page 1188 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the first volume of a two volume set which presents the results of the 31st International Symposium on Shock Waves (ISSW31), held in Nagoya, Japan in 2017. It was organized with support from the International Shock Wave Institute (ISWI), Shock Wave Research Society of Japan, School of Engineering of Nagoya University, and other societies, organizations, governments and industry. The ISSW31 focused on the following areas: Blast waves, chemical reacting flows, chemical kinetics, detonation and combustion, ignition, facilities, diagnostics, flow visualization, spectroscopy, numerical methods, shock waves in rarefied flows, shock waves in dense gases, shock waves in liquids, shock waves in solids, impact and compaction, supersonic jet, multiphase flow, plasmas, magnetohyrdrodynamics, propulsion, shock waves in internal flows, pseudo-shock wave and shock train, nozzle flow, re-entry gasdynamics, shock waves in space, Richtmyer-Meshkov instability, shock/boundary layer interaction, shock/vortex interaction, shock wave reflection/interaction, shock wave interaction with dusty media, shock wave interaction with granular media, shock wave interaction with porous media, shock wave interaction with obstacles, supersonic and hypersonic flows, sonic boom, shock wave focusing, safety against shock loading, shock waves for material processing, shock-like phenomena, and shock wave education. These proceedings contain the papers presented at the symposium and serve as a reference for the participants of the ISSW 31 and individuals interested in these fields.

Unsteady flow organization of a SWBLI

Author : Raymond A. Humble
Publisher : Eburon Uitgeverij B.V.
ISBN 13 : 9059722957
Total Pages : 338 pages
Book Rating : 4.0/5 (597 download)

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Book Synopsis Unsteady flow organization of a SWBLI by : Raymond A. Humble

Download or read book Unsteady flow organization of a SWBLI written by Raymond A. Humble and published by Eburon Uitgeverij B.V.. This book was released on 2008 with total page 338 pages. Available in PDF, EPUB and Kindle. Book excerpt:

30th International Symposium on Shock Waves 2

Author : Gabi Ben-Dor
Publisher : Springer
ISBN 13 : 3319448668
Total Pages : 681 pages
Book Rating : 4.3/5 (194 download)

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Book Synopsis 30th International Symposium on Shock Waves 2 by : Gabi Ben-Dor

Download or read book 30th International Symposium on Shock Waves 2 written by Gabi Ben-Dor and published by Springer. This book was released on 2017-08-01 with total page 681 pages. Available in PDF, EPUB and Kindle. Book excerpt: These proceedings collect the papers presented at the 30th International Symposium on Shock Waves (ISSW30), which was held in Tel-Aviv Israel from July 19 to July 24, 2015. The Symposium was organized by Ortra Ltd. The ISSW30 focused on the state of knowledge of the following areas: Nozzle Flow, Supersonic and Hypersonic Flows with Shocks, Supersonic Jets, Chemical Kinetics, Chemical Reacting Flows, Detonation, Combustion, Ignition, Shock Wave Reflection and Interaction, Shock Wave Interaction with Obstacles, Shock Wave Interaction with Porous Media, Shock Wave Interaction with Granular Media, Shock Wave Interaction with Dusty Media, Plasma, Magnetohyrdrodynamics, Re-entry to Earth Atmosphere, Shock Waves in Rarefied Gases, Shock Waves in Condensed Matter (Solids and Liquids), Shock Waves in Dense Gases, Shock Wave Focusing, Richtmyer-Meshkov Instability, Shock Boundary Layer Interaction, Multiphase Flow, Blast Waves, Facilities, Flow Visualization, and Numerical Methods. The two volumes serve as a reference for the participants of the ISSW30 and anyone interested in these fields.

Annual Research Briefs ...

Author : Center for Turbulence Research (U.S.)
Publisher :
ISBN 13 :
Total Pages : 434 pages
Book Rating : 4.:/5 (56 download)

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Book Synopsis Annual Research Briefs ... by : Center for Turbulence Research (U.S.)

Download or read book Annual Research Briefs ... written by Center for Turbulence Research (U.S.) and published by . This book was released on 2011 with total page 434 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Unsteady Motion of Shock Waves in Two Dimensional Transonic Channel Flows

Author : T. C Adamson (Jr)
Publisher :
ISBN 13 :
Total Pages : 68 pages
Book Rating : 4.:/5 (227 download)

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Book Synopsis Unsteady Motion of Shock Waves in Two Dimensional Transonic Channel Flows by : T. C Adamson (Jr)

Download or read book Unsteady Motion of Shock Waves in Two Dimensional Transonic Channel Flows written by T. C Adamson (Jr) and published by . This book was released on 1977 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt: Two dimensional unsteady transonic channel flow with a shock wave is considered for the so-called slowly varying time regime. Solutions are studied for two specific cases within this general time regime, the cases corresponding to small and large amplitude shock wave motions. For the large amplitude case, conditions are considered under which the shock wave travels upstream of the throat, disappears, and then reforms at the throat. A unified solution which covers both cases is developed. Numerical results are presented. A short discussion of shock induced separation in unsteady flows is given. (Author).

Progress in Hybrid RANS-LES Modelling

Author : Shia-Hui Peng
Publisher : Springer Science & Business Media
ISBN 13 : 3642141684
Total Pages : 361 pages
Book Rating : 4.6/5 (421 download)

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Book Synopsis Progress in Hybrid RANS-LES Modelling by : Shia-Hui Peng

Download or read book Progress in Hybrid RANS-LES Modelling written by Shia-Hui Peng and published by Springer Science & Business Media. This book was released on 2010-09-17 with total page 361 pages. Available in PDF, EPUB and Kindle. Book excerpt: Hybrid modelling of turbulent flows, combining RANS and LES techniques, has received increasing attention over the past decade to fill the gap between (U)RANS and LES computations in aerodynamic applications at industrially relevant Reynolds numbers. With the advantage of hybrid RANS-LES modelling approaches, being considerably more computationally efficient than full LES and more accurate than (U)RANS, particularly for unsteady aerodynamic flows, has motivated numerous research and development activities. These activities have been increasingly stimulated by the provision of modern computing facilities. The present book contains the contributions presented at the Third Symposium on Hybrid RANS-LES Methods, held in Gdansk, Poland, 10-12 June 2009. To a certain extent, this conference was a continuation of the first symposium taking place in Stockholm (Sweden, 2005) and the second in Corfu (Greece, 2007). Motivated by the extensive interest in the research community, the papers presented at the Corfu symposium were published by Springer in the book entitled “Advances in Hybrid RANS-LES Modelling” (in Notes on Numerical Fluid Mechanics and Multidisciplinary Design, Vol. 97). At the Gdansk symposium, along with four invited keynotes, given respectively by S. Fu, U. Michel, M. Sillen and P. Spalart, another 28 papers were presented on the following topics: Unsteady RANS, LES, Improved DES Methods, Hybrid RANS-LES Methods, DES versus URANS and other Hybrid Methods, Modelli- related Numerical Issues and Industrial Applications. After the symposium all full papers have been further reviewed and revised for publication in the present book.

Interaction of Droplet Pairs in Weak Shock Wave Induced Unsteady Flows

Author : George Zwi Ecker
Publisher :
ISBN 13 :
Total Pages : 1136 pages
Book Rating : 4.:/5 (551 download)

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Book Synopsis Interaction of Droplet Pairs in Weak Shock Wave Induced Unsteady Flows by : George Zwi Ecker

Download or read book Interaction of Droplet Pairs in Weak Shock Wave Induced Unsteady Flows written by George Zwi Ecker and published by . This book was released on 1985 with total page 1136 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Scientific and Technical Aerospace Reports

Author :
Publisher :
ISBN 13 :
Total Pages : 836 pages
Book Rating : 4.:/5 (31 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 1994 with total page 836 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Impact of Scientific Computing on Science and Society

Author : Pekka Neittaanmäki
Publisher : Springer Nature
ISBN 13 : 3031290828
Total Pages : 451 pages
Book Rating : 4.0/5 (312 download)

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Book Synopsis Impact of Scientific Computing on Science and Society by : Pekka Neittaanmäki

Download or read book Impact of Scientific Computing on Science and Society written by Pekka Neittaanmäki and published by Springer Nature. This book was released on 2023-07-07 with total page 451 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book analyzes the impact of scientific computing in science and society over the coming decades. It presents advanced methods that can provide new possibilities to solve scientific problems and study important phenomena in society. The chapters cover Scientific computing as the third paradigm of science as well as the impact of scientific computing on natural sciences, environmental science, economics, social science, humanistic science, medicine, and engineering. Moreover, the book investigates scientific computing in high performance computing, quantum computing, and artificial intelligence environment and what it will be like in the 2030s and 2040s.