斜界面Rayleigh-Taylor不稳定性混合实验研究  

Experimental Investigation of Mixing at Tilted Interface Induced by Rayleigh-Taylor Instability

作　　者：刘金宏[1] 谭多望[1] 张旭[1] 黄文斌[1] 邹立勇[1] 

机构地区：[1]中国工程物理研究院流体物理研究所冲击波物理与爆轰物理实验室,四川绵阳621900

出　　处：《高压物理学报》2012年第6期687-692,共6页Chinese Journal of High Pressure Physics

基　　金：国家自然科学基金(11072226);国防科技重点实验室基金(9140C6710011006)

摘　　要：实验研究了不相溶流体斜界面Rayleigh-Taylor(R-T)不稳定性湍流混合区的混合不对称性特征。利用高压气体加速装有不同液体的箱体,加速度方向由轻液体指向重液体,此时界面是R-T不稳定性的。利用阴影测试技术,研究了初始倾角9°的ZnCl2溶液/正己烷斜界面的演化规律,得出混合区内混合不对称、斜界面倾角渐增的规律。Experiments were performed to investigate dissymmetry of Rayleigh-Taylor（R-T） instability of immiscible liquid initialized with a oblique initial interface. High pressure gas was used to accelerate a container filled with various liquid, the direction of acceleration from the lighter liquid to the heavy liquid,at the moment the interface is instability. The results of tilted angle 9° interracial （ZnCl2 solution/Hexane） evolution and mixing,were obtained from flow visualization experiments by the shadow graph method. The obtained experimental result indicated that mixing ratio of TMZ is dissymmetry and the interracial tilted angle is increased.

关 键 词：Rayleigh—Taylor不稳定性 湍流混合区 阴影 

分 类 号：O357.5[理学—流体力学]