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Journal of Projectiles, Rockets, Missiles and Guidance >

2023 , Vol. 43 >Issue 2: 72 - 79

DOI: https://doi.org/10.15892/j.cnki.djzdxb.2023.02.013

Simulation Research on Two-phase Flow Characteristics in Angle-cut Nozzle of Solid Rocket Motor

  • WEN Xiongfei ,
  • ZHAO Yu ,
  • MA Xinjian ,
  • ZHAO Zhi ,
  • MENG Hao
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  • Shanghai Space Propulsion Technology Research Institute, Shanghai 201109, China

Received date: 2022-09-25

  Online published: 2025-02-24

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Abstract

Focus on the problem of the two-phase flow in angle-cut nozzle of solid rocket motor, the particle trajectory model and Realizable k-ε turbulence model are applied to calculate the three-dimensional two phase flow coupling by using the particle source method in the computational unit. The characteristic of two-phase flow in angle-cut nozzle and the interaction between gas phase and particles is researched. The effect of particle diameter on the two-phase flow characteristic and thrust is also analyzed based on the Rosin-Rammler particle size distribution. The results show that the existence of particle phase leads to a region with high temperature and low flow velocity of gas near the nozzle axis, and a region without particles near the wall of the angle-cut section. With the increase of particle diameter, particles are concentrated near the axis and the trajectory is straight, and the region without particles is larger. At the same time, the gas phase velocity increases first and then decreases along the nozzle axis, the gas temperature decreases first and then increases. And the larger the particle diameter, the smaller are temperature and velocity change. In the two-phase flow state, the thrust of the angle-cut nozzle is larger than the gas phase thrust. And with the increase of particle diameter, the thrust decreases.

Key words： solid rocket motor; angle-cut nozzle; two-phase flow; numerical simulation; thrust

Cite this article

WEN Xiongfei , ZHAO Yu , MA Xinjian , ZHAO Zhi , MENG Hao . Simulation Research on Two-phase Flow Characteristics in Angle-cut Nozzle of Solid Rocket Motor[J]. Journal of Projectiles, Rockets, Missiles and Guidance, 2023 , 43(2) : 72 -79 . DOI: 10.15892/j.cnki.djzdxb.2023.02.013

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