Experimental and numerical investigation of the Richtmyer-Meshkov instability under re-shock conditions

被引：123

作者：

Leinov, E. ^{[1
]}

Malamud, G. ^{[1
,2
]}

Elbaz, Y. ^{[2
]}

Levin, L. A. ^{[1
,2
]}

Ben-Dor, G. ^{[1
]}

Shvarts, D. ^{[1
,2
]}

Sadot, O. ^{[1
,2
]}

机构：

[1] Ben Gurion Univ Negev, Dept Mech Engn, Pearlstone Ctr Aeronaut Engn Studies, IL-84105 Beer Sheva, Israel

[2] Nucl Res Ctr Negev, Dept Phys, IL-84190 Beer Sheva, Israel

来源：

JOURNAL OF FLUID MECHANICS | 2009年 / 626卷

关键词：

RAYLEIGH-TAYLOR INSTABILITY; NONLINEAR-THEORY; MODEL; ACCELERATION; DEPENDENCE; INTERFACE; EVOLUTION; FLUIDS; WAVE; LAWS;

D O I：

10.1017/S0022112009005904

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

An experimental and numerical systematic study of the growth of the Richtmyer-Meshkov instability-induced mixing following a re-shock is made, where the initial shock moves from the light fluid to the heavy one, over an incident Mach number range of 1.15-1.45. The evolution of the mixing zone following the re-shock is found to be independent of its amplitude at the time of the re-shock and to depend directly oil the strength of the re-shock. A linear growth of the mixing zone with time following the passage of the re-shock and before the arrival of the reflected rarefaction wave is found. Moreover, when the mixing zone width is plotted as a function of the distance travelled, the growth slope is found to be independent of the re-shock strength. A comparison of the experimental results with direct numerical simulation calculations reveals that the linear growth rate of the mixing zone is the result of a bubble competition process.

引用

页码：449 / 475

页数：27

共 35 条

[1] SCALE-INVARIANT MIXING RATES OF HYDRODYNAMICALLY UNSTABLE INTERFACES [J].