Abstract
Cryogenic Inducer Test Facility (CITF) had been constructed at Kakuda Rocket Engine Research Center, JAXA. By utilizing this facility, it is expected that inducer performance in cryogenic fluid could be mor clarified. For experimental investigation of thermodynamic effect on cavitation, it is valuable to observe the cavitation in cryogenic flow, but the visualization is difficult. For this reason, we tried to estimate the cavity region in iquid nitrogen based on unsteady pressure distribution. By this method, the cavitating region against cavitation number was observed.The comparison between the experiments in liquid nitrogen and in cold water allowed us to estimate the amplitude of the thermodynamic effct. The liquid nitrogen experiments were conducted at two kinds of temoperatures to estimate the relationship between thermdynamic effect and liquid temperature.
