  Preliminary polytropic models of a pulsating star have been constructed using
the 3-D Hydrocode SPHC. An embedded Rayleigh-Taylor unstable layer is used to
study the interaction of pulsation and turbulence. The possible importance of
Richtmyer-Meshkov instability is noted for large amplitude pulsation. In
addition, this model spontaneously generates a strong, hot, shock driven
outflow at the upper boundary.
