Geometric and blast effects on thin film cavity protection schemes for IFE reactors

The flow of thin liquid films of liquids in geometric orientations and under blast conditions of an IFE reactor chamber is investigated. An inertial jet on an inverted hemispherical surface, indicative of the PROMETHEUS design, is modeled with a 1-D analysis. The behavior of the film and the conditions for adhesion of the jet are explored. Also, vertical film flow is modeled with a 2-D fluid code that tracts the free surface. A test case is presented where the development of a wavy surface is seen. This surface is subjected to pressure pulses typical of reactor cavity gas fluctuations and the surface is seen to be disrupted.