Rayleigh-Taylor turbulent mixing evolution under a shock influence

At the installation SOM, the experimental study of the impulse acceleration influence on the behavior of the turbulized layer obtained as a result of Rayleigh-Taylor instability (RTI) action on the system of two different den sity liquids with the density ratio n = 3, has been performed. After applic ation of impulse acceleration the systems were moving according to inertia, and by using the light method the coordinates of penetration of the heavie r liquid into the lighter one and vice versa were determined. The liquids s tudied were placed inside the ampoule that had internal working sizes (54 x 64 x 120) mm(3). There were initial accidental perturbations like a rough solid surface at the interface and the width of the initial perturbation zo ne was L-0 = 2.3 mm. The moving ampoule blow against metal plates created t he impulse acceleration. The relative impulse acceleration was deltag/g(11) = 22.2-66.6 where g(11) is the ampoule acceleration before the impact, the impulse duration was varied from 0.27 ms to 0.096 ms. The results concerne d with the turbulized layer extension after the impulse acceleration action were obtained.