摘要
结合单颗粒动力学模型与普朗特混合长度理论 ,对二维气雾两相射流体系中颗粒的时均速度和脉动速度进行了求解 ,结果表明颗粒在径向上的轴向流速呈正态分布 ,射流轴心线附近紊动较强 ,随着射流向外发展 ,紊动逐渐降低。实验证明模型计算值与实验值吻合较好 ,能较好地体现二维气雾两相射流特性 ,具有一定的可行性和实用性。
Both single particles dynamics model and Prandtl mixing length model are combined together to deduce the two-phaser jet's calculation formulas for the mean and r.m.s velocity distribution of droplets. The results show that the mean axial velocity of droplets is normal distribution and the r.m.s velocity near the axis is larger than that of other places. The calculation examples and their comparison with experimental results presented in this paper confirm the feasibility and practicability of the model.
出处
《化工设计》
CAS
2001年第2期19-21,共3页
Chemical Engineering Design
基金
国家自然基金会资助!(No.29976026)
