ABSTRACT
The Rayleigh-Taylor (RT) instability occurs if a heavy fluid is supported by a light fluid in a gravitational field (Rayleigh 1883). Equivalently, one gets RT instability when a light fluid pushes and accelerates a heavy fluid (Taylor 1950) (see figure 11.1). In general, theRT instability occurswhenever a pressure gradient opposes a density gradient (rP is in an opposite direction to r).
