高温燃气中铝凝相粒子壁面碰撞行为影响因素研究

Zhi Wei Ma, Ying Feng, Zhi Jun Wei, Ding Jiang Xie, Wei Dong, Ning Fei Wang, Bao Lu Shi

科研成果: 期刊稿件文章同行评审

1 引用 (Scopus)

摘要

To investigate the deposition pattern of condensed-phase aluminium inside the engine,a high-temperature methane/oxygen flame was used to simulate the high-temperature environment of a solid rocket motor. Based on the previous study,this work focuses on the effects of wall temperature and material on the deposition probability of condensed-phase aluminium. The experimental results show that the collision velocity,as well as the wall material and temperature,affect the post-collision behaviour and deposition probability of aluminium droplets. The main mechanism of deposition is that the heat transfer of droplets on the wall leads to cooling and solidification of particles,resulting in a strong adhesion force. However,a much low wall temperature leads to rapid cooling of particles and reduces the adhesion force between particles and the wall,thus reducing the deposition probability. The thermal conductivity and mechanical properties of the wall material also have an impact on the deposition probability.

投稿的翻译标题Influencing Factors of Collision Behavior Between Aluminum Particles and Wall in High-Temperature Gas
源语言繁体中文
文章编号210841
期刊Tuijin Jishu/Journal of Propulsion Technology
43
11
DOI
出版状态已出版 - 11月 2022

关键词

  • Aluminum particles
  • Collision
  • Deposition
  • Slag accumulation
  • Solid rocket motor

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