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Title: Large-eddy simulation of Rayleigh-Taylor instability

Description: Rayleigh-Taylor instability is the baroclinic generation of vorticity at a perturbed interface subject to acceleration in a direction opposite the mean density gradient. The resulting interpenetration and mixing of materials has far-reaching consequences in many natural and man-made flows, ranging from supernovae to inertial confinement fusion. The first sequence shows heavy fluid (red, density=3) mixing with lighter fluid (blue, density=1) as the instability develops. The second animation portrays the evolution of the density field on a vertical slice through the mixing region. The third movie portrays this same slice but with the camera distance scaled by the vertical extent of the mixing region. The fourth sequence portrays the evolution of mixed fluid from the same scaled viewpoint.

Credits: William H. Cabot, Andrew W. Cook, Paul L. Miller, Daniel E. Laney, Mark C. Miller, and Henry R. Childs,

References:

Web Page: http://pof.aip.org/pof/gallery/video/2005/908509phfenhanced.mov

Contributed By: Tausif Billah