Influence of vaporization effect on gas-liquid two-phase flow field of ejection in combustion gas and vapor mode

To study the influence of vaporization effect on launching process of ejection in combustion gas and vapor mode, 2D axisymmetric model of an ejection device with water injection in block was established. The coupling of mixture multiphase model and species transport model was used to solve gas-liquid two-phase frozen flow field. A vaporization model of water was introduced by adding source terms to conservation equations. Soave-Redlich-Kwong real gas model was used to simulate the state change of vapor. The flow pattern and vaporization process of water were obtained. By comparison of two conditions and experimental results, the reliability of simulation results was verified. The research shows, compared with the condition without considering vaporization effect, the maximum average temperature of flow field with considering vaporization effect reduces 524 K, and the maximum average temperature nearing sabot reduces 223 K. Interior ballistic process with vaporization effect is more identical to the experimental results, which has guiding significance to the simulation and improvement of this kind of problems.