On upstream influence in supersonic flows
نویسندگان
چکیده
منابع مشابه
Asymmetry Effects in Numerical Simulation of Supersonic Flows with Upstream Separated Regions
In a previous paper1 the author and co-workers reported an unexpected numerical behavior in the simulation of dual-mode scramjet combustors. Under conditions of perfect symmetry in geometry, grid and boundary conditions, computational fluid dynamic (CFD) calculations showed an asymmetric response when a shock-train/separated-flow system was present in the flowfield. Other researchers using a co...
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Two distinct redistribution grids - adaptation techniques, spring analogy and elliptic grid generator are applied to two-dimensional steady, inviscid, shocked flows, and the ability of each technique is examined and compared. Euler equations are solved base on Roe's Reimann solver approach to simulate supersonic flow around a sphere, transonic flow about an airfoil and supersonic flow in a symm...
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1 Introduction A balance between the flame propagation speed and the fluid velocity must be maintained to maintain the flame in a chemically reacting flow. Since the fluid velocity exceeds the flame speed in supersonic combustion applications, the flameholding issue is solved by generation of some sort of recirculation region which ensures sufficient residence time so that the processes involve...
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We investigate diffusion in supersonic turbulent compressible flows. Supersonic turbulence can be characterized as network of interacting shocks. We consider flows with different rms Mach numbers and where energy necessary to maintain dynamical equilibrium is inserted at different spatial scales. We find that turbulent transport exhibits superdiffusive behavior due to induced bulk motions. In a...
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ژورنال
عنوان ژورنال: Journal of Fluid Mechanics
سال: 2005
ISSN: 0022-1120,1469-7645
DOI: 10.1017/s0022112005005513