Numerical Simulation of Supersonic Plane Mixing Layer Using High Resolution Scheme
Author : Pong-Jeu Lu
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Page : pages
File Size : 33,60 MB
Release : 1990
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Author : Pong-Jeu Lu
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Page : pages
File Size : 33,60 MB
Release : 1990
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Author : John Philip Drummond
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Page : 112 pages
File Size : 29,84 MB
Release : 1988
Category : Fluid mechanics
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Author : C. E. Grosch
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Page : 66 pages
File Size : 13,37 MB
Release : 1996
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Author : National Aeronautics and Space Administration (NASA)
Publisher : Createspace Independent Publishing Platform
Page : 108 pages
File Size : 14,61 MB
Release : 2018-07-17
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ISBN : 9781722913984
Research has been undertaken to achieve an improved understanding of physical phenomena present when a supersonic flow undergoes chemical reaction. A detailed understanding of supersonic reacting flows is necessary to successfully develop advanced propulsion systems now planned for use late in this century and beyond. In order to explore such flows, a study was begun to create appropriate physical models for describing supersonic combustion, and to develop accurate and efficient numerical techniques for solving the governing equations that result from these models. From this work, two computer programs were written to study reacting flows. Both programs were constructed to consider the multicomponent diffusion and convection of important chemical species, the finite rate reaction of these species, and the resulting interaction of the fluid mechanics and the chemistry. The first program employed a finite difference scheme for integrating the governing equations, whereas the second used a hybrid Chebyshev pseudospectral technique for improved accuracy. Drummond, J. Philip Langley Research Center BOUNDARY LAYERS; CHEMICAL REACTIONS; FLUID MECHANICS; MIXING; MIXING LAYERS (FLUIDS); NUMERICAL ANALYSIS; SIMULATION; SUPERSONIC FLOW; CHEBYSHEV APPROXIMATION; COMPUTER PROGRAMS; FINITE DIFFERENCE THEORY; HYPERSONIC AIRCRAFT; SUPERSONIC COMBUSTION RAMJET ENGINES...
Author : J. Philip Drummond
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Page : 112 pages
File Size : 10,13 MB
Release : 1988
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Author : J. Philip Drummond
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Page : 14 pages
File Size : 18,94 MB
Release : 1987
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Author : John Philip Drummond
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Page : 328 pages
File Size : 30,38 MB
Release : 1987
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Author :
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Page : 702 pages
File Size : 21,14 MB
Release : 1995
Category : Aeronautics
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Author : National Aeronautics and Space Administration (NASA)
Publisher : Createspace Independent Publishing Platform
Page : 36 pages
File Size : 45,8 MB
Release : 2018-07-02
Category :
ISBN : 9781722192457
Direct Numerical Simulation (DNS) is used to study the mechanism of generation and evolution of turbulence structures in a temporally evolving supersonic swirling round jet and also to examine the resulting acoustic radiations. Fourier spectral expansions are used in the streamwise and azimuthal directions and a 1-D b-spline Galerkin representation is used in the radial direction. Spectral-like accuracy is achieved using this numerical scheme. Direct numerical simulations, using the b-spline spectral method, are carried out starting from mean flow initial conditions which are perturbed by the most unstable linear stability eigenfunctions. It is observed that the initial helical instability waves evolve into helical vortices which eventually breakdown into smaller scales of turbulence. 'Rib' structures similar to those seen in incompressible mixing layer flow of Rogers and Moserl are observed. The jet core breakdown stage exhibits increased acoustic radiations. Rao, Ram Mohan and Lundgren, Thomas S. Ames Research Center NCC2-5221...
Author : Ram Mohan Rao
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Page : 264 pages
File Size : 25,5 MB
Release : 1997
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