An Adaptive Grid Algorithm For Nonequilibrium Hypersonic Flows
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An Adaptive Grid Algorithm For Nonequilibrium Hypersonic Flows
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Author : Michael John Aftosmis
language : en
Publisher:
Release Date : 1990
An Adaptive Grid Algorithm For Nonequilibrium Hypersonic Flows written by Michael John Aftosmis and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1990 with Fluid dynamics categories.
An Adaptive Grid Algorithm For Nonequilibrium Hypersonic Flows
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Author : Michael John Aftosmis
language : en
Publisher:
Release Date : 1989
An Adaptive Grid Algorithm For Nonequilibrium Hypersonic Flows written by Michael John Aftosmis and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1989 with Fluid dynamics categories.
The use of unstructured, adaptive, embedded grids has been applied to hypersonic nonequilibrium CFD problems. Grid adaptation was accomplished by sub-dividing computational cells for 2-D and axisymmetric blunt body configurations. The high temperature gas mixture was described by Lighthill's dissociating gas model which was extended to include multiple coupled reaction paths in both viscous and inviscid flows. Ni's finite volume Lax-Wendroff scheme was used to integrate the governing equations. This algorithm was extended to include shock fitting and adaptation on general, unstructured, time dependent grids. The explicit real-gas algorithm and shock fitting procedure were validated by comparisons with experimental and computational results for perfect gas, dissociating gas, and multiple reaction cases. These comparisons also emphasized the importance of chemical length scale effects in predicting nonequilibrium gas behavior. Such effects were linked not only to species concentration profiles throughout the shock layer, but also to the excess production of Nitric Oxide frequently reported off the symmetry plane in reacting air blunt body flows. A detailed study of basic nonequilibrium flow phenomena has been completed for freestream Mach numbers from 10 to 15 over blunted cones and wedges. These flows demonstrated degrees of nonequilibrium ranging from nearly frozen to near equilibrium. In all cases the adaptive procedure correctly located and resolved perfect gas and nonequilibrium features. Adaptation was shown to be particularly useful in capturing the steep chemical gradients which appear within the shock layer. (jhd).
Masters Theses In The Pure And Applied Sciences
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Author : Wade H. Shafer
language : en
Publisher: Springer Science & Business Media
Release Date : 2012-12-06
Masters Theses In The Pure And Applied Sciences written by Wade H. Shafer and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-12-06 with Science categories.
Masters Theses in the Pure and Applied Sciences was first conceived, published, and disseminated by the Center for Information and Numerical Data Analysis and Synthesis (CINDAS) * at Purdue University in 1957, starting its coverage of theses with the academic year 1955. Beginning with Volume 13, the printing and dissemination phases of the activity were transferred to University Microfilms/Xerox of Ann Arbor, Michigan, with the thought that such an arrangement would be more beneficial to the academic and general scientific and technical community. After five years of this joint undertaking we had concluded that it was in the interest of all con cerned if the printing and distribution of the volumes were handled by an interna tional publishing house to assure improved service and broader dissemination. Hence, starting with Volume 18, Masters Theses in the Pure and Applied Sciences has been disseminated on a worldwide basis by Plenum Publishing Cor poration of New York, and in the same year the coverage was broadened to include Canadian universities. All back issues can also be ordered from Plenum. We have reported in Volume 34 (thesis year 1989) a total of 13,377 theses titles from 26 Canadian and 184 United States universities. We are sure that this broader base for these titles reported will greatly enhance the value of this important annual reference work. While Volume 34 reports theses submitted in 1989, on occasion, certain univer sities do report theses submitted in previous years but not reported at the time.
Aiaa 24th Thermophysics Conference
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Author :
language : en
Publisher:
Release Date : 1989
Aiaa 24th Thermophysics Conference written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1989 with Space vehicles categories.
Proceedings Of The International Conference On Finite Element Methods In Flow Problems
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Author :
language : en
Publisher:
Release Date : 1989
Proceedings Of The International Conference On Finite Element Methods In Flow Problems written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1989 with Finite element method categories.
Aiaa 90 1471 Aiaa 90 1520
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Author :
language : en
Publisher:
Release Date : 1990
Aiaa 90 1471 Aiaa 90 1520 written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1990 with Fluid dynamics categories.
Super And Hypersonic Aerodynamics And Heat Transfer
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Author : V.Z. Parton
language : en
Publisher: Routledge
Release Date : 2018-03-29
Super And Hypersonic Aerodynamics And Heat Transfer written by V.Z. Parton and has been published by Routledge this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-03-29 with Technology & Engineering categories.
Recent government and commercial efforts to develop orbital and suborbital passenger and transport aircraft have resulted in a burgeoning of new research. The articles in this book, translated from Russian, were contributed by the world's leading authorities on supersonic and hypersonic flows and heat transfer. This superb book addresses the physics and engineering aspects of ultra high-speed aerodynamic problems. Thorough coverage is given to an array of specific problem-solving equations. Super- and Hypersonic Aerodynamics and Heat Transfer will be essential reading for all aeronautical engineers, mechanical engineers, mathematicians, and physicists involved in this exciting field of research.
Scientific And Technical Aerospace Reports
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Author :
language : en
Publisher:
Release Date : 1995
Scientific And Technical Aerospace Reports written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1995 with Aeronautics categories.
Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
Characteristic Based Methods For The Time Domain Maxwell Equations
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Author : J. S. Shang
language : en
Publisher:
Release Date : 1993
Characteristic Based Methods For The Time Domain Maxwell Equations written by J. S. Shang and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1993 with Maxwell equations categories.
Numerical procedures for solving the time-domain Maxwell equations based on the theory of characteristics were successfully developed. Both explicit and implicit methods were formulated by the time-central and spatial-windward algorithm to better describe wave motion. A new trapezoidal consistent implicit scheme was shown to be unconditionally stable for the linear initial value system and was able to generate numerical solutions comparable to those of the established explicit method. The formulation of the three-dimensional system including generalized coordinate system was completed but not explored. The present 2-D results on Cartesian frame demonstrated a potential for numerical efficiency improvement. Time-domain Maxwell equation, Trapezoidal consistent implicit scheme, Cartesian frame.
Nasa Technical Memorandum
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Author :
language : en
Publisher:
Release Date : 1992
Nasa Technical Memorandum written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1992 with Aeronautics categories.