Numerical simulation of Rayleigh–Taylor instabilities involving solids has been carried out in a spherically converging geometry. A solid shell is driven toward the center by high-pressure gas outside. Low-pressure gas inside the shell is then compressed, causing the solid shell to slow down and eventually bounce back. Simulation results show the absence of the onset condition unlike in the planar geometry equivalent. Results also show that disturbance growth seems to be strongly associated with the deformation direction instead of the acceleration direction. For example, when the interface is compressed in the cross-stream direction, the disturbance at the gas–solid interface grows even under the Rayleigh–Taylor stable situation.

涉及固体的瑞利-泰勒不稳定性的数值模拟已在球形会聚几何形状中进行。外部的高压气体将固体外壳推向中心。壳内部的低压气体随后被压缩，导致固体壳变慢并最终反弹。仿真结果表明，不存在起始条件，这与平面几何等效条件不同。结果还表明，扰动增长似乎与变形方向而不是加速度方向密切相关。例如，当在横流方向压缩界面时，即使在瑞利-泰勒稳定情况下，气固界面的扰动也会增加。