Supersonic Shock Wave Vortex Interaction

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Supersonic Shock Wave/Vortex Interaction

Author : National Aeronautics and Space Administration (NASA)
Publisher : Createspace Independent Publishing Platform
ISBN 13 : 9781722830786
Total Pages : 44 pages
Book Rating : 4.8/5 (37 download)

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Book Synopsis Supersonic Shock Wave/Vortex Interaction by : National Aeronautics and Space Administration (NASA)

Download or read book Supersonic Shock Wave/Vortex Interaction written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-07-11 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt: Although shock wave/vortex interaction is a basic and important fluid dynamics problem, very little research has been conducted on this topic. Therefore, a detailed experimental study of the interaction between a supersonic streamwise turbulent vortex and a shock wave was carried out at the Penn State Gas Dynamics Laboratory. A vortex is produced by replaceable swirl vanes located upstream of the throat of various converging-diverging nozzles. The supersonic vortex is then injected into either a coflowing supersonic stream or ambient air. The structure of the isolated vortex is investigated in a supersonic wind tunnel using miniature, fast-response, five-hole and total temperature probes and in a free jet using laser Doppler velocimetry. The cases tested have unit Reynolds numbers in excess of 25 million per meter, axial Mach numbers ranging from 2.5 to 4.0, and peak tangential Mach numbers from 0 (i.e., a pure jet) to about 0.7. The results show that the typical supersonic wake-like vortex consists of a non-isentropic, rotational core, where the reduced circulation distribution is self similar, and an outer isentropic, irrotational region. The vortex core is also a region of significant turbulent fluctuations. Radial profiles of turbulent kinetic energy and axial-tangential Reynolds stress are presented. The interactions between the vortex and both oblique and normal shock waves are investigated using nonintrusive optical diagnostics (i.e. schlieren, planar laser scattering, and laser Doppler velocimetry). Of the various types, two Mach 2.5 overexpanded-nozzle Mach disc interactions are examined in detail. Below a certain vortex strength, a 'weak' interaction exists in which the normal shock is perturbed locally into an unsteady 'bubble' shock near the vortex axis, but vortex breakdown (i.e., a stagnation point) does not occur. For stronger vortices, a random unsteady 'strong' interaction results that causes vortex breakdown. The vortex core reforms downstream of t...

Experimental Design of a Supersonic Shock Wave/vortex Interaction at Mach 3

Author : James Edward Weger
Publisher :
ISBN 13 :
Total Pages : 110 pages
Book Rating : 4.:/5 (23 download)

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Book Synopsis Experimental Design of a Supersonic Shock Wave/vortex Interaction at Mach 3 by : James Edward Weger

Download or read book Experimental Design of a Supersonic Shock Wave/vortex Interaction at Mach 3 written by James Edward Weger and published by . This book was released on 1990 with total page 110 pages. Available in PDF, EPUB and Kindle. Book excerpt:

28th International Symposium on Shock Waves

Author : Konstantinos Kontis
Publisher : Springer Science & Business Media
ISBN 13 : 3642256856
Total Pages : 1122 pages
Book Rating : 4.6/5 (422 download)

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Book Synopsis 28th International Symposium on Shock Waves by : Konstantinos Kontis

Download or read book 28th International Symposium on Shock Waves written by Konstantinos Kontis and published by Springer Science & Business Media. This book was released on 2012-03-22 with total page 1122 pages. Available in PDF, EPUB and Kindle. Book excerpt: The University of Manchester hosted the 28th International Symposium on Shock Waves between 17 and 22 July 2011. The International Symposium on Shock Waves first took place in 1957 in Boston and has since become an internationally acclaimed series of meetings for the wider Shock Wave Community. The ISSW28 focused on the following areas: Blast Waves, Chemically Reacting Flows, Dense Gases and Rarefied Flows, Detonation and Combustion, Diagnostics, Facilities, Flow Visualisation, Hypersonic Flow, Ignition, Impact and Compaction, Multiphase Flow, Nozzle Flow, Numerical Methods, Propulsion, Richtmyer-Meshkov, Shockwave Boundary Layer Interaction, Shock Propagation and Reflection, Shock Vortex Interaction, Shockwave Phenomena and Applications, as well as Medical and Biological Applications. The two Volumes contain the papers presented at the symposium and serve as a reference for the participants of the ISSW 28 and individuals interested in these fields.

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.

Numerical Solutions to Three-dimensional Shock Wave

Author : Griffin Corpening
Publisher :
ISBN 13 :
Total Pages : 316 pages
Book Rating : 4.F/5 ( download)

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Book Synopsis Numerical Solutions to Three-dimensional Shock Wave by : Griffin Corpening

Download or read book Numerical Solutions to Three-dimensional Shock Wave written by Griffin Corpening and published by . This book was released on 1990 with total page 316 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.

Coherent Structure and Shock-vortex Interaction in the Screeching Supersonic Jet

Author : Daniel Michael Mitchell
Publisher :
ISBN 13 :
Total Pages : 372 pages
Book Rating : 4.:/5 (11 download)

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Book Synopsis Coherent Structure and Shock-vortex Interaction in the Screeching Supersonic Jet by : Daniel Michael Mitchell

Download or read book Coherent Structure and Shock-vortex Interaction in the Screeching Supersonic Jet written by Daniel Michael Mitchell and published by . This book was released on 2013 with total page 372 pages. Available in PDF, EPUB and Kindle. Book excerpt: This body of work describes an experimental investigation into coherent structuresand aeroacoustic feedback loops in underexpanded supersonic jets. The work includes a study of additional error terms in Particle Image Velocimetry (PIV) measurements due to the presence of shock waves within the flow, a detailed campaign of acoustic and time-resolved schlieren measurements as well as planar PIV measurements.An error analysis is conducted for the application of PIV to shock containingflows. The effect of size distribution within a seed material on measured relaxationtime is examined, with polydisperse particles of the same median diameter shown to possess a significantly higher relaxation time than their monodisperse counterpartswhen measured via a PIV algorithm. The influence of a shock wave induced velocitygradient within a PIV interrogation window on the correlation function is also examinedusing the Noiseless Cross Correlation Function of Soria (2006). The presence ofa shock is shown to introduce an artificial fluctuation into the measurement of velocity.This fluctuation is a function of the shock position, shock strength, spatial ratioand particle distribution. When the shock is located at the middle of the window,the magnitude of the fluctuation increases monotonically with increasing spatial ratio,increases asymptotically with shock strength, and decreases for increasing particle polydispersity. When the shock is located at the upstream edge of the window, the magnitude of the artificial fluctuation is highest for intermediate spatial ratios, going to zero at infinitely high and low values. In this instance particle polydispersity acts to increase the magnitude of fluctuations in measured velocity. In both cases particlepolydispersity serves to broaden the PDF of measured velocity. For the theoreticalcases presented herein, with a shock located within the interrogation window, the rootmean square of the artificial velocity fluctuations reaches values in excess of 30% of the freestream velocity. For the specific experiments presented later in the work, themagnitude of the artificial velocity fluctuation is less than 10%.Both the schlieren technique and PIV are applied to the study of the instabilitymodes of screeching axisymmetric jets. Jets at four pressure ratios: NPR = [2.2,2.6, 3.4, 4.2] are studied, and the dominant modes identified as A2, B, C and Crespectively. Three distinct modes at NPR = 2.2 are identified, one axisymmetric andtwo lateral, with screech Strouhal numbers of 0.71, 0.51 and 0.2 respectively. At NPR = 2.6 a dominant lateral mode is identified with St = 0.42. This mode proves the leastamenable to measurement with the PIV technique, as the direction of lateral oscillation precesses around the axis somewhat randomly. Helical modes at NPR = 3.4 and 4.2 are studied, with St = 0.39 and 0.35 respectively. The presence of a large Mach disk at NPR = 4.2 is not shown to qualitatively change the dynamics of the screech process.The production of discrete acoustic tones by the interaction between embeddedshocks and convected vortices is directly visualized. The motion of vortices is seen tocreate a disturbance wave at the shock reflection point of an upstream shock cell, this disturbance convects to the jet core and forms the basis for an evanescent convecting shockwave downstream. The flattening of this shock wave during the passage of the vortex results in a strong acceleration of the shock-tip, which moves in a whip-like manner and generates a strong upstream travelling acoustic wave. Analysis of the skewness and kurtosis of the axial velocity probability density functions is shown to be able to identify locations of intense sound generation. The second, third and fourth shock cells are shown to be the dominant noise sources.

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.

29th International Symposium on Shock Waves 2

Author : Riccardo Bonazza
Publisher : Springer
ISBN 13 : 331916838X
Total Pages : 822 pages
Book Rating : 4.3/5 (191 download)

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Book Synopsis 29th International Symposium on Shock Waves 2 by : Riccardo Bonazza

Download or read book 29th International Symposium on Shock Waves 2 written by Riccardo Bonazza and published by Springer. This book was released on 2015-07-10 with total page 822 pages. Available in PDF, EPUB and Kindle. Book excerpt: This proceedings present the results of the 29th International Symposium on Shock Waves (ISSW29) which was held in Madison, Wisconsin, U.S.A., from July 14 to July 19, 2013. It was organized by the Wisconsin Shock Tube Laboratory, which is part of the College of Engineering of the University of Wisconsin-Madison. The ISSW29 focused on the following areas: Blast Waves, Chemically Reactive Flows, Detonation and Combustion, Facilities, Flow Visualization, Hypersonic Flow, Ignition, Impact and Compaction, Industrial Applications, Magnetohydrodynamics, Medical and Biological Applications, Nozzle Flow, Numerical Methods, Plasmas, Propulsion, Richtmyer-Meshkov Instability, Shock-Boundary Layer Interaction, Shock Propagation and Reflection, Shock Vortex Interaction, Shock Waves in Condensed Matter, Shock Waves in Multiphase Flow, as well as Shock Waves in Rarefield Flow. The two Volumes contain the papers presented at the symposium and serve as a reference for the participants of the ISSW 29 and individuals interested in these fields.

Analysis of Unsteady Flow Phenomena: Shock - Vortex and Shock - Boundary Layer Interactions

Author : National Aeronautics and Space Adm Nasa
Publisher : Independently Published
ISBN 13 : 9781724005441
Total Pages : 26 pages
Book Rating : 4.0/5 (54 download)

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Book Synopsis Analysis of Unsteady Flow Phenomena: Shock - Vortex and Shock - Boundary Layer Interactions by : National Aeronautics and Space Adm Nasa

Download or read book Analysis of Unsteady Flow Phenomena: Shock - Vortex and Shock - Boundary Layer Interactions written by National Aeronautics and Space Adm Nasa and published by Independently Published. This book was released on 2018-09-25 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt: The interaction of shock waves with vortices has received much attention in the past, mainly because shock-vortex interaction closely models the interaction of a shock wave with the coherent structures of a turbulent flow-field, and is a key feature in the broad-band shock noise for supersonic jets in off-project conditions. Chu and Kovasznay have shown that a weak disturbance in a viscous heat conducting fluid can be decomposed as the sum of three basic modes, namely acoustic, vortical and entropy mode; the interaction of any of these modes with a shock wave gives rise to all three disturbance modes downstream of the shock. The vortical mode is important since it constitutes the basis of the coherent structures that have been observed to dominate turbulence for low- to moderate-flow speed. Hollingsworth et al. have experimentally investigated the interaction of a cylindrical shock-induced starting vortex with a plane normal shock, and have shown that the interaction generates a cylindrical acoustic pulse that exhibits a quadrupolar structure consisting of four alternate compression and expansion regions centered around the transmitted vortex. The investigations of Hollingsworth and Richards have been extended by Dosanjh and Weeks that have analyzed the interaction of a columnar spiral vortex with a normal shock wave, thus obtaining quantitative measurements and confirming the generation of a progressive cylindrical wavefront of alternate compression-expansion nature. Naumann and Hermanns' have experimentally addressed the non-linear aspects of shock-vortex interaction, and have shown that the interaction causes both a diffraction and a reflection of the shock with a pattern consisting of either a regular-or a Mach-reflection depending on the shock and the vortex strengths. An attempt to theoretically explain the production of sound from the shock-vortex interaction was carried out by Ribner. Pao and Salas have numerically studied two-dimensional shock-vortex intera

29th International Symposium on Shock Waves 1

Author : Riccardo Bonazza
Publisher : Springer
ISBN 13 : 3319168355
Total Pages : 832 pages
Book Rating : 4.3/5 (191 download)

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Book Synopsis 29th International Symposium on Shock Waves 1 by : Riccardo Bonazza

Download or read book 29th International Symposium on Shock Waves 1 written by Riccardo Bonazza and published by Springer. This book was released on 2015-07-09 with total page 832 pages. Available in PDF, EPUB and Kindle. Book excerpt: This proceedings present the results of the 29th International Symposium on Shock Waves (ISSW29) which was held in Madison, Wisconsin, U.S.A., from July 14 to July 19, 2013. It was organized by the Wisconsin Shock Tube Laboratory, which is part of the College of Engineering of the University of Wisconsin-Madison. The ISSW29 focused on the following areas: Blast Waves, Chemically Reactive Flows, Detonation and Combustion, Facilities, Flow Visualization, Hypersonic Flow, Ignition, Impact and Compaction, Industrial Applications, Magnetohydrodynamics, Medical and Biological Applications, Nozzle Flow, Numerical Methods, Plasmas, Propulsion, Richtmyer-Meshkov Instability, Shock-Boundary Layer Interaction, Shock Propagation and Reflection, Shock Vortex Interaction, Shock Waves in Condensed Matter, Shock Waves in Multiphase Flow, as well as Shock Waves in Rarefield Flow. The two Volumes contain the papers presented at the symposium and serve as a reference for the participants of the ISSW 29 and individuals interested in these fields.

31st International Symposium on Shock Waves 2

Author : Akihiro Sasoh
Publisher : Springer
ISBN 13 : 9783319910161
Total Pages : 0 pages
Book Rating : 4.9/5 (11 download)

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Book Synopsis 31st International Symposium on Shock Waves 2 by : Akihiro Sasoh

Download or read book 31st International Symposium on Shock Waves 2 written by Akihiro Sasoh and published by Springer. This book was released on 2019-04-03 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the second 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. Chapter “Effects of Liquid Impurity on Laser-Induced Gas Breakdown in Quiescent Gas: Experimental and Numerical Investigations” is available open access under a Creative Commons Attribution 4.0 International License at link.springer.com.

Frontiers of Shock Wave Research

Author : Kazuyoshi Takayama
Publisher : Springer Nature
ISBN 13 : 303090735X
Total Pages : 237 pages
Book Rating : 4.0/5 (39 download)

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Book Synopsis Frontiers of Shock Wave Research by : Kazuyoshi Takayama

Download or read book Frontiers of Shock Wave Research written by Kazuyoshi Takayama and published by Springer Nature. This book was released on 2022-06-07 with total page 237 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book contains 12 chapters written by well-known shock wave researchers from seven different countries. Each researcher provides a brief description of his main research interests and results, thereby providing the readers with an excellent view of shock wave research conducted in the past fifty years. It also provides hints as to what still needs further investigation. It will be an excellent guide for young researchers entering the field of shock wave phenomena. Among the described investigations are the following topics: Blast wave interaction with a body when the body is in the area of interference of two blast waves moving in different directions; equation of state for water based on the shock Hugoniot data; Mach waves occurring over a backward facing edge in supersonic flow; shock waves in dusty gas; shock wave interaction with various bodies; three shock interactions.

28th International Symposium on Shock Waves

Author : Konstantinos Kontis
Publisher : Springer Science & Business Media
ISBN 13 : 3642256880
Total Pages : 860 pages
Book Rating : 4.6/5 (422 download)

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Book Synopsis 28th International Symposium on Shock Waves by : Konstantinos Kontis

Download or read book 28th International Symposium on Shock Waves written by Konstantinos Kontis and published by Springer Science & Business Media. This book was released on 2012-03-14 with total page 860 pages. Available in PDF, EPUB and Kindle. Book excerpt: The University of Manchester hosted the 28th International Symposium on Shock Waves between 17 and 22 July 2011. The International Symposium on Shock Waves first took place in 1957 in Boston and has since become an internationally acclaimed series of meetings for the wider Shock Wave Community. The ISSW28 focused on the following areas: Blast Waves, Chemically Reacting Flows, Dense Gases and Rarefied Flows, Detonation and Combustion, Diagnostics, Facilities, Flow Visualisation, Hypersonic Flow, Ignition, Impact and Compaction, Multiphase Flow, Nozzle Flow, Numerical Methods, Propulsion, Richtmyer-Meshkov, Shockwave Boundary Layer Interaction, Shock Propagation and Reflection, Shock Vortex Interaction, Shockwave Phenomena and Applications, as well as Medical and Biological Applications. The two Volumes contain the papers presented at the symposium and serve as a reference for the participants of the ISSW 28 and individuals interested in these fields.

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.

30th International Symposium on Shock Waves 1

Author : Gabi Ben-Dor
Publisher : Springer
ISBN 13 : 331946213X
Total Pages : 746 pages
Book Rating : 4.3/5 (194 download)

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Book Synopsis 30th International Symposium on Shock Waves 1 by : Gabi Ben-Dor

Download or read book 30th International Symposium on Shock Waves 1 written by Gabi Ben-Dor and published by Springer. This book was released on 2017-08-09 with total page 746 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.

High Order Large Eddy Simulation for Shock-Boundary Layer Interaction Control by a Micro-ramp Vortex Generator

Author : Chaoqun Liu
Publisher : Bentham Science Publishers
ISBN 13 : 1681085976
Total Pages : 321 pages
Book Rating : 4.6/5 (81 download)

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Book Synopsis High Order Large Eddy Simulation for Shock-Boundary Layer Interaction Control by a Micro-ramp Vortex Generator by : Chaoqun Liu

Download or read book High Order Large Eddy Simulation for Shock-Boundary Layer Interaction Control by a Micro-ramp Vortex Generator written by Chaoqun Liu and published by Bentham Science Publishers. This book was released on 2017-12-08 with total page 321 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume presents an implicitly implemented large eddy simulation (ILES) by using the fifth order bandwidth-optimized WENO scheme. The chosen method is applied to make comprehensive studies on ramp flows with and without control at Mach 2.5 and Re=5760. Flow control in the form of microramp vortex generators (MVG) is applied. The results show that a MVG can distinctly reduce the separation zone at the ramp corner and lower the boundary layer shape factor under simulated conditions. A series of new findings about the MVG-ramp flow are obtained, including structures relevant to surface pressure, three-dimensional structures of the re-compression shock waves, a complete surface separation pattern, momentum deficit and a new secondary vortex system. A new mechanism of shock-boundary layer interaction control by MVG associated with a series of vortex rings is also presented. Vortex rings strongly interact with air flow and play an important role in the separation zone reduction. Additionally, readers will learn about the governing equation, boundary condition, high quality grid generation, high order shock capturing scheme and DNS inflow condition in detail. This volume will, therefore, serve as a useful reference for aerospace researchers using LES methods to study shock boundary layer interaction and supersonic flow control.