Shock tube experiments and numerical simulation of the single-mode, three-dimensional Richtmyer–Meshkov instability

2009 ◽  
Vol 21 (11) ◽  
pp. 114104 ◽  
Author(s):  
C. C. Long ◽  
V. V. Krivets ◽  
J. A. Greenough ◽  
J. W. Jacobs
Keyword(s):  
Numerical Simulation ◽  
Shock Tube ◽  
Three Dimensional ◽  
Single Mode

scholarly journals Long-term effect of Rayleigh–Taylor stabilization on converging Richtmyer–Meshkov instability

2018 ◽  
Vol 849 ◽  
pp. 231-244 ◽  
Author(s):  
Xisheng Luo ◽  
Fu Zhang ◽  
Juchun Ding ◽  
Ting Si ◽  
Jiming Yang ◽  
...  
Keyword(s):  
Shock Tube ◽  
Phase Inversion ◽  
Three Dimensional ◽  
Single Mode ◽  
Term Effect ◽  
Testing Time ◽  
Perturbation Amplitude ◽  
Long Term Effect ◽  
Stabilization Effect

The Richtmyer–Meshkov instability on a three-dimensional single-mode light/heavy interface is experimentally studied in a converging shock tube. The converging shock tube has a slender test section so that the non-uniform feature of the shocked flow is amply exhibited in a long testing time. A deceleration phenomenon is evident in the unperturbed interface subjected to a converging shock. The single-mode interface presents three-dimensional characteristics because of its minimum surface feature, which leads to the stratified evolution of the shocked interface. For the symmetry interface, it is quantitatively found that the perturbation amplitude experiences a rapid growth to a maximum value after shock compression and finally drops quickly before the reshock. This quick reduction of the interface amplitude is ascribed to a significant Rayleigh–Taylor stabilization effect caused by the deceleration of the light/heavy interface. The long-term effect of the Rayleigh–Taylor stabilization even leads to a phase inversion on the interface before the reshock when the initial interface has sufficiently small perturbations. It is also found that the amplitude growth is strongly suppressed by the three-dimensional effect, which facilitates the occurrence of the phase inversion.

scholarly journals Blowing and drifting snow in Alpine terrain: numerical simulation and related field measurements

1998 ◽  
Vol 26 ◽  
pp. 174-178 ◽  
Author(s):  
Peter Gauer
Keyword(s):  
Numerical Simulation ◽  
Numerical Model ◽  
Three Dimensional ◽  
Field Measurements ◽  
Blowing Snow ◽  
Related Field ◽  
Drifting Snow ◽  
Physically Based ◽  
Snow Transport

A physically based numerical model of drifting and blowing snow in three-dimensional terrain is developed. The model includes snow transport by saltation and suspension. As an example, a numerical simulation for an Alpine ridge is presented and compared with field measurements.

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