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Showing 1 to 10 of 10 for “"Richtmyer-Meshkov instability"”.
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Richtmyer-Meshkov instability with reshock and particle interactions
Richtmyer-Meshkov instability (RMI) occurs when an interface of two fluids with different densities is impulsively accelerated. The main interest in RMI is to understand the growth of perturbations, and numerous theoretical models have been developed and validated against experimental/numerical …
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Study of magnetohydrodynamic effects for the Richtmyer-Meshkov instability
… experimental and computational studies of the Richtmyer-Meshkov (RM) instability with Magnetohydrodynamic (MHD) effects. The experimental work does not consider the instability or its growth, but rather developes an atmospheric plasma jet for use in future magnetohydrodynamic experiments. The …
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Observation and Measurement of the Growth of the Primary Instabilities of the Richtmyer-Meshkov Instability and Observation of Secondary Instabilities
… the change in two of the key features of the Richtmyer-Meshkov (RM) instability in a shock-accelerated, initially cylindrical gas column; that is, the counter-rotating vortex pair and the central spike; and the observation of secondary instabilities within the primary instability. The …
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Bioagent defeat in shock driven gas flow
… and in this case, the flow evolution driven by Richtmyer-Meshkov instability is well characterized (although, as this thesis shows, assumptions commonly made about the experimental conditions need to be carefully checked). However, for a similar oblique interaction, with the plane of the shock …
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Oblique shock interactions with gas cylinder interfaces
… (SF6) which generates the well-known Richtmyer-Meshkov Instability (RMI) when impulsively accelerated by a shock wave. This instability is formed due to the misalignment of the pressure and density gradients during the acceleration phase. The second is air. In this case, there is no …
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Behavior of the Embedded Phase in a Shock-Driven Two-Phase Flow
… used for the injection system during earlier Richtmyer-Meshkov Instability studies. The second test section has no surface features interfering with the flow, with smooth interfaces. The quiescent air seeded with propylene glycol droplets (diameter 0.5-3um) is impulsively accelerated with a …
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Incident shock Mach number effects on Richtmyer-Meshkov mixing with simultaneous density and velocity measurements
… shock Mach number (M) on the development of the Richtmyer-Meshkov instability after a shock wave impulsively accelerates a varicose-perturbed, heavy-gas curtain (air-SF6-air). Three cases of incident shock strength were experimentally investigated: M = 1.21, 1.36, and 1.50. The resulting …
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Oblique shock interactions With perturbed density interfaces
… (SF6), which generates the well known Richtmyer-Meshkov Instability (RMI) when accelerated by a shock wave. This instability is formed due to a mis-alignment of the pressure and density gradients during impulsive acceleration. The second gas is air. There is no density gradient between …
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Oblique Shock Wave Effects on Impulsively Accelerated Heavy Gas Column
… cylindrical interface produced a typical Richtmyer- Meshkov instability (RMI) consisting of a primary counter-rotating vortices. The streamwise extent of the vortex pair in the centerline plane (cross-section) images of the column is proportional to the square root of A divided by the …
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The impact and rupture of a water-filled balloon on a rigid surface
… is explained as consequence of the inherent instability of the Gaussian velocity field in the wake. Finally, the late-time growth of the interfacial amplitude is examined, and argued to be closely-related to the Richtmyer-Meshkov instability. A model is then derived for the case of a balloon …