Particle-Free Zone of the Gas-Particle Two-Phase Flow in a Nozzle

被引：0

作者：

Li, Xing ^{[1
]}

Zhang, Haibin ^{[1
]}

Bai, Bofeng ^{[1
]}

机构：

[1] State Key Laboratory of Multiphase Flow in Power Engineering, School of Chemical Engineering and Technology, Xi'an Jiaotong University, Xi'an,710049, China

来源：

Kung Cheng Je Wu Li Hsueh Pao/Journal of Engineering Thermophysics | 2022年 / 43卷 / 06期

关键词：

Efficiency - Lagrange multipliers - Nozzles - Rocket engines - Solid propellants - Two phase flow;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

The gas-particle two-phase flow is encountered in various industrial applications, such as the solid-propellant rocket motors. However, the condition for the emergence of the particle-free zone is still ambiguous, and the influence of the particle-free zone on the two-phase interaction and thrust is still unclear. In this work, we built an Eulerian-Lagrangian method for the simulation of the gas-particle flow in a JPL 45°∼15° nozzle. Various parameters, such as the range of the particle-free zone, the thrust, the specific impulse, the two-phase loss and the nozzle efficiency, were examined. We found that the particle-free zone does exist only for 1 μm particles. Moreover, the thrust does not change monotonously with particle size, which has not been noticed before. On the contrary, the two-phase loss, the specific impulse and the nozzle efficiency change logarithmically with particle size. © 2022, Science Press. All right reserved.

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页码：1535 / 1540

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