Flow field simulation of N₂O cavitation Venturi

In order to get the distribution of cavitation flow field of N₂O in cavitation Venturi,governing equations of two-phase mixture flow were solved based on state equation for real gas and full cavitation model.According to the special properties of N₂O,numerical simulation was performed on a cavitation Venturi under three experimental states.Two different methods:with and without the influences of latent heat were used respectively and comparison and analysis of two different results were made.The cavitation area calculated by the method considering the influences of latent heat was smaller and obvious change of temperature in and around the cavitation area was found.The results indicate that the necessity and correctness of calculation considering the influences of latent heat,which can be a certain guide for the design of Venturi.