Interaction Of Chemistry Turbulence And Shock Waves In Hypervelocity Flow
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Interaction Of Chemistry Turbulence And Shock Waves In Hypervelocity Flow
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Author : G. V. Candler
language : en
Publisher:
Release Date : 1994
Interaction Of Chemistry Turbulence And Shock Waves In Hypervelocity Flow written by G. V. Candler and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1994 with Heat categories.
Interaction Of Chemistry Turbulence And Shock Waves In Hypervelocity Flow
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Author :
language : en
Publisher:
Release Date : 1994
Interaction Of Chemistry Turbulence And Shock Waves In Hypervelocity Flow written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1994 with categories.
Significant progress was made during the second year of an interdisciplinary experimental, numerical and theoretical program to extend the state of knowledge and understanding of the effects of chemical reactions in hypervelocity flows. The program addressed key problems in naerothermochemistry that arise from interactions between the three strongly nonlinear effects: Compressibility; vorticity; and chemistry. Important new results included: Clear understanding of the two important parameters that define hypervelocity flow over spheres. Closed-form solution for stand-off distance. Completion of computation of hollow-core compressible vortex streets. First high-resolution interferograms of shock-shock interaction in hypervelocity flow. Detailed experimental and theoretical study shows that high-enthalpy real-gas effects do not further increase heat flux in type IV Interaction. Interferograms establish flow quality in the hypervelocity shock tunnel T5. Upgrade of the Supersonic Shear Layer facility to higher Mach number. New results on supersonic shear layers and shear-layer/shock-wave interaction. Computational discovery of a flow field that is sensitive to vibration-dissociation coupling. Extension of the equilibrium flux method to a more robust less dissipative form and tests. Computation of collision cross section to electrons of low excited states of OH, NO, and CO2. Establishment of Laser-Induced Thermal Acoustics as an accurate diagnostic for gas properties over large pressure ranges. (AN).
Interaction Of Chemistry Turbulence And Shock Waves In Hypervelocity Flow
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Author : Graham V. Candler
language : en
Publisher:
Release Date : 1999
Interaction Of Chemistry Turbulence And Shock Waves In Hypervelocity Flow written by Graham V. Candler and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1999 with Aerodynamics, Hypersonic categories.
Significant contributions were made in a four-year interdisciplinary experimental, numerical and theoretical program to extend the state of knowledge and understanding of the effects of chemical reactions in hypervelocity flows. The program addressed the key problems in aerothermochemistry that arise from the interaction between the three strongly nonlinear effects: Compressibility; vorticity; and chemistry. Results included: (1) Discovery of dramatic damping effects of nonequilibrium vibration and chemistry on transition in hypervelocity flows; (2) Proper formulation of parameters for reacting blunt-body flows. (3) Effects of nonequilibrium chemistry in shock-on-shock interaction; (4) New experiments on, and correlation with theory of high-enthalpy flap-induced separation; (5) Computations of interaction of a shock wave with density interfaces and with compressible Hill's spherical vortex; (6) Extensive clarification of phenomena in supersonic shear flows using new diagnostic and computational tools; (7) New experiments and computations of hypervelocity double-one flow yielded insights into vibration-dissociation coupling; (8) First-principles computations of electron collision cross-sections with diatomic molecules and CO2; and (9) Development of new diagnostic technique LITA for accurate non-intrusive point measurement of gas properties.
Shock Wave Boundary Layer Interactions
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Author : Holger Babinsky
language : en
Publisher: Cambridge University Press
Release Date : 2011-09-12
Shock Wave Boundary Layer Interactions written by Holger Babinsky and has been published by Cambridge University Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011-09-12 with Technology & Engineering categories.
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.
Interaction Of Turbulence With Complex Shock Waves
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Author :
language : en
Publisher:
Release Date : 1994
Interaction Of Turbulence With Complex Shock Waves written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1994 with categories.
Linear analysis and direct numerical simulation (DNS) are used to study the interaction of a shock wave with a turbulent flow. Effects central to shock wave/boundary layer interaction are identified and explained. The quantitative importance of the turbulence anisotropy and the shock oblique angle is demonstrated. Drop in Reynolds shear stress across a normal shock is shown. The implication for Reynolds stress models is discussed. The role of dilatational turbulent fluctuations on turbulence amplification is studied in detail. An explanation is suggested for lower amplification reported in wind-tunnel studies. Linear analysis & DNS are used to demonstrate the considerable influence of entropic fluctuations on turbulence evolution across a shock. Positive correlation between u' and T ' suppress amplification while negative correlation enhances it. Invalidity of Morkovin's hypothesis is demonstrated. A high order scheme is developed to allow strong shock/turbulence interaction. Results are presented for isotropic turbulence/normal shock interaction. (AN).
Shock Wave Interaction In Hypervelocity Flow
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Author : Simon R. Sanderson
language : en
Publisher:
Release Date : 1995
Shock Wave Interaction In Hypervelocity Flow written by Simon R. Sanderson and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1995 with Aerodynamics, Supersonic categories.
Experiments are conducted in a free piston shock tunnel to determine the effects of thermochemistry on the interaction of a weak oblique shock with the strong bow shock ahead of a blunt body in supersonic flow at high enthalpy. The flow topology is simplified by studying the nominally two-dimensional flow about a cylinder with a coplanar impinging shock wave. High resolution holographic interferometry is used to investigate changes in the flow structure as the location of the impinging shock wave is varied.
Transition Location Effect On Shock Wave Boundary Layer Interaction
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Author : Piotr Doerffer
language : en
Publisher: Springer Nature
Release Date : 2020-07-30
Transition Location Effect On Shock Wave Boundary Layer Interaction written by Piotr Doerffer and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-07-30 with Technology & Engineering categories.
This book presents experimental and numerical findings on reducing shock-induced separation by applying transition upstream the shock wave. The purpose is to find out how close to the shock wave the transition should be located in order to obtain favorable turbulent boundary layer interaction. The book shares findings obtained using advanced flow measurement methods and concerning e.g. the transition location, boundary layer characteristics, and the detection of shock wave configurations. It includes a number of experimental case studies and CFD simulations that offer valuable insights into the flow structure. It covers RANS/URANS methods for the experimental test section design, as well as more advanced techniques, such as LES, hybrid methods and DNS for studying the transition and shock wave interaction in detail. The experimental and numerical investigations presented here were conducted by sixteen different partners in the context of the TFAST Project. The general focus is on determining if and how it is possible to improve flow performance in comparison to laminar interaction. The book mainly addresses academics and professionals whose work involves the aerodynamics of internal and external flows, as well as experimentalists working with compressible flows. It will also be of benefit for CFD developers and users, and for students of aviation and propulsion systems alike.
Numerical Computations Of Turbulence Amplification In Shock Wave Interactions
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Author : Thomas A. Zang
language : en
Publisher:
Release Date : 1983
Numerical Computations Of Turbulence Amplification In Shock Wave Interactions written by Thomas A. Zang and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1983 with Shock waves categories.
Numerical Simulation Of Experiments On Shock Wave Interactions In Hypervelocity Flows With Chemical Reactions
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Author : J. Van Keuk
language : en
Publisher:
Release Date : 2003
Numerical Simulation Of Experiments On Shock Wave Interactions In Hypervelocity Flows With Chemical Reactions written by J. Van Keuk and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2003 with categories.
Shock Turbulence Interactions In A Reacting Flow
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Author : Institute for Computer Applications in Science and Engineering
language : en
Publisher:
Release Date : 1992
Shock Turbulence Interactions In A Reacting Flow written by Institute for Computer Applications in Science and Engineering and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1992 with categories.