数字海洋与水下攻防2025，Vol.8Issue(3)：319-326,8.DOI:10.19838/j.issn.2096-5753.2025.03.009
水下超声速燃气喷流形态及流场结构研究
Study on Shapes and Flow Field Structures of Underwater Supersonic Gas Jets
姚琰 1李长文 1陈瑛 2陈玮琪 1杨晓光1
作者信息
- 1. 北京机电工程研究所,北京 100074
- 2. 上海交通大学 船舶海洋与建筑工程学院,上海 200240
- 折叠
摘要
Abstract
The flow of high temperature and high pressure supersonic jet entering water is a complex physical process.There is not only an obvious velocity difference between gas and water at the gas-liquid interface,but also a sharp phase transition phenomenon.Based on the multiphase flow MIXTURE model,a non-equilibrium phase transition model considering the high temperature effect is established to study the change law of underwater supersonic gas jet morphology,the impact mechanism of flow field shock structure,pressure evolution,and the unsteady characteristics of the gas vapor-liquid interface.The results show that the jet continuously interacts with the surrounding flow field and exchanges momentum in the process of developing downstream,which has a great impact on the jet morphology and flow phenomenon,and the jet appears regular periodic necking oscillation stage.Under the condition of small back pressure,the components of the jet core are basically gas,and the phase transition is easy to occur at the edge of the high-temperature jet.With the increase of back pressure,water vapor is mainly distributed in the middle and rear of the jet and in the expansion air mass.关键词
燃气喷流/气液两相流/水蒸汽/相变Key words
gas jet/gas liquid two-phase flow/water vapor/phase transition分类
数理科学引用本文复制引用
姚琰,李长文,陈瑛,陈玮琪,杨晓光..水下超声速燃气喷流形态及流场结构研究[J].数字海洋与水下攻防,2025,8(3):319-326,8.
