Development of the Richtmyer-Meshkov instability upon interaction of a diffusion mixing layer of two gases with shock waves

2005 ◽  
Vol 46 (3) ◽  
pp. 307-314 ◽  
Author(s):  
G. A. Ruev ◽  
A. V. Fedorov ◽  
V. M. Fomin
Keyword(s):  
Shock Waves ◽  
Mixing Layer ◽  
Diffusion Mixing

LES study on flow features of the supersonic mixing layer affected by shock waves

2017 ◽  
Vol 85 ◽  
pp. 114-123 ◽  
Author(s):  
Donggang Cao ◽  
Guoqiang He ◽  
Fei Qin ◽  
Xianggeng Wei ◽  
Lei Shi ◽  
...  
Keyword(s):  
Shock Waves ◽  
Mixing Layer ◽  
Supersonic Mixing ◽  
Flow Features ◽  
Supersonic Mixing Layer

scholarly journals The role of waves on mixing in shallow waters

2019 ◽  
Vol 46 (2) ◽  
pp. 134-147 ◽  
Author(s):  
Shooka Karimpour ◽  
Vincent H. Chu
Keyword(s):  
Shock Waves ◽  
Shear Flow ◽  
Froude Number ◽  
Structural Changes ◽  
Mixing Layer ◽  
Vortex Sheet ◽  
Layer Growth ◽  
Shallow Waters ◽  
Critical Range

The role of waves on mixing is examined in a transverse shear flow in shallow waters for sub-critical, trans-critical, and super-critical flow over a range of convective Froude numbers. At low convective Froude numbers, the rollup of the vortex sheet to form an eddy defines the mixing. The mixing at higher convective Froude numbers, on the other hand, is affected by the shock waves and the radiation of the wave energy from an elongated vorticity element. Significant structural changes of the shear flow occur as the shock waves become discernible in the trans-critical and super-critical range of the convective Froude number. The shear layer growth is restrained while the momentum-thickness to vorticity-thickness ratio increases by a factor greater than 3. The fractional growth rate of the mixing layer in shallow waters and its dependence on the convective Froude number follows analogously the observed Mach-number dependence in gas dynamics.

Mixing Enhancement of Compressible Planar Mixing Layer Impinged by Oblique Shock Waves

2015 ◽  
Vol 31 (1) ◽  
pp. 156-169 ◽  
Author(s):  
Yunlong Zhang ◽  
Bing Wang ◽  
Huiqiang Zhang ◽  
Shuyan Xue
Keyword(s):  
Shock Waves ◽  
Mixing Layer ◽  
Oblique Shock ◽  
Mixing Enhancement

Evolution characteristics of subsonic-supersonic mixing layer impinged by shock waves

2020 ◽  
Vol 106 ◽  
pp. 106150 ◽  
Author(s):  
Kai Ma ◽  
Jiang Li ◽  
Qiang Li ◽  
Yang Liu ◽  
Xin Li ◽  
...  
Keyword(s):  
Shock Waves ◽  
Mixing Layer ◽  
Supersonic Mixing ◽  
Evolution Characteristics ◽  
Supersonic Mixing Layer

Investigation of shock-wave deformation history from recovered structure

1986 ◽  
Vol 44 ◽  
pp. 434-435
Author(s):  
M.A. Mogilevsky ◽  
L.S. Bushnev
Keyword(s):  
Shock Wave ◽  
Plastic Deformation ◽  
Dislocation Density ◽  
Shock Waves ◽  
Shock Front ◽  
Single Crystals ◽  
Residual Deformation ◽  
Deformation Structure ◽  
Deformation History ◽  
Deformation Velocity

Single crystals of Al were loaded by 15 to 40 GPa shock waves at 77 K with a pulse duration of 1.0 to 0.5 μs and a residual deformation of ∼1%. The analysis of deformation structure peculiarities allows the deformation history to be re-established.After a 20 to 40 GPa loading the dislocation density in the recovered samples was about 1010 cm-2. By measuring the thickness of the 40 GPa shock front in Al, a plastic deformation velocity of 1.07 x 108 s-1 is obtained, from where the moving dislocation density at the front is 7 x 1010 cm-2. A very small part of dislocations moves during the whole time of compression, i.e. a total dislocation density at the front must be in excess of this value by one or two orders. Consequently, due to extremely high stresses, at the front there exists a very unstable structure which is rearranged later with a noticeable decrease in dislocation density.

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