INSTABILITY OF EVAPORATING SURFACE

The experimental facility and procedure are described for investigatio n of the stability of interface in the liquid-vapor system. The interf ace is the surface of a bubble formed in the volume of a thermal, wher e the liquid is locally superheated. The liquid under investigation is n-heptane. The range of liquid superheating in the experiments is 100 -200 degrees C. The diagram of characteristic states of interface is t reated. A model of transition to unstable state is proposed, based on the Landau instability mechanism.