Numerical Simulation of Two-Phase Internal Flow Field in SRM with Continuum-Discrete Particles Coupled Hybrid Mode

被引：0
|
作者：
Zhou W. [1 ]
Xie F. [1 ]
Ning C. [1 ]
Su Q.-D. [1 ]
机构：
[1] College of Missile Engineering, Rocket Force University of Engineering, Xi'an
来源：
Tuijin Jishu/Journal of Propulsion Technology | 2019年 / 40卷 / 05期
关键词：
Coupled hybrid model; Equilibrium Eulerian method; Lagrangian method; Solid rocket motor; Turbulent gas-particle two-phase flow;
D O I：
10.13675/j.cnki.tjjs.180310
中图分类号：
学科分类号：
摘要：
To deal with the problem of two-phase flow inside a Solid Rocket Motor(SRM)with aluminized propellant, a two-way coupling hybrid model was established by utilizing a comprehensive approach that consider particles as a combination of continuum and discrete particles. Large particles are described by the Lagrangian method, small particles are described by the equilibrium Eulerian method, which overcome the problem of accuracy reduced due to the difficulty of fully considering the particle size. The model was verified by an example and a numerical simulation of turbulent gas-particle two-phase flow in SRM with Al propellant was conducted. It shows that the size of large particles changed significantly across the nozzle with an average decrease of 30%. Particles with a diameter of 40μm and above were easily broken, and its combustion efficiency entered the platform area, with a decrease of more than 50% compared with that of 10μm particles, and the Al composition was greater than 60%. The distribution of particles with different sizes and their influence on flow field and structural performance of the SRM are analyzed. It provides a new effective method that improving numerical simulation accuracy of full-scale three-dimensional two-phase internal flow field of aluminized propellant SRM with a submerged nozzle. © 2019, Editorial Department of Journal of Propulsion Technology. All right reserved.
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页码：1107 / 1117
页数：10
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