摘要
本文对水－汽浸没凝结射流两相流动采用单流体模型及ｋ－ε－ｇ湍流模型进行了数值研究。得到了速度、温度、密度和气相体积分数等物理量的分布以及穿透区（含气区）的形状。穿透区的长度与相关的由实验得到的经验公式符合得很好。计算结果表明水的汽－液浸没凝结射流经历了气相流动、气液两相流动和液相流动等不同流动型态的变化，具有复杂的流场结构。
he steam jet submerged in cool water with condensation is simulated by using a single-fluid(no slip) model for multiphase flow and a k-ε-g model for turbulent mixing of water and steam.The distribution of velocity, temperature, density, avoid fraction and the shape of the penetrating region are obtained. The predicted length of the penetrating region is in good agreement with the empirical correlation obtained by experiment. It is shown that the steam jet submerged in cool water consists of the gas-phase flow, gas-liquid two-phase flow and liquid-phase flow both in radial direction and axial direction.
出处
《燃烧科学与技术》
CAS
CSCD
1996年第3期228-235,共8页
Journal of Combustion Science and Technology
关键词
浸没射流
数值模拟
凝结
两相流
Submerged jet, Numerical simulation, Condensation
