Numerical Analysis of the Flow Field in the Nozzle of Hot Water Rocket Motor

Wei Wei Sun; Zhi Jun Wei

doi:10.4028/www.scientific.net/AMR.1016.635

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Numerical Analysis of the Flow Field in the Nozzle of Hot Water Rocket Motor

Abstract:

Flashing is an important factor in the working process of hot water rocket motor. In order to deeply understand the performance characteristic of hot water rocket motor, a numerical simulation model of the flow field in the nozzle was established in this paper. According to the study of flow field in the nozzle of the motor,it is found that the phase change occurs at the position of the throat,and the flow reaches to supersonic after the throat because of the changing sound speed.The flow in the nozzle can be divided into three processes in this paper: single-phase flow process, flash process and expand-accelerating process.