| 固冲发动机补燃室内硼颗粒点火和燃烧数值研究 |
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| 引用本文： | 胡建新,夏智勋.固冲发动机补燃室内硼颗粒点火和燃烧数值研究[J].弹道学报,2006,18(1):68-71. |
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| 作者姓名： | 胡建新 夏智勋 |
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| 作者单位： | 国防科学技术大学,航天与材料工程学院,长沙,410073 |
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| 摘 要： | 采用颗粒轨道模型进行了含硼贫氧推进剂固体火箭冲压发动机补燃室两相流的数值模拟,其中硼颗粒的点火和燃烧模型采用的是King模型,建立了发动机补燃室内简单反应流模型,并在该模型下对某实验发动机进行了模拟,得出颗粒在补燃室内的分布,结果表明:进入头部回流区的硼颗粒能够快速点火,并且颗粒直径增大后,点火时间增加,颗粒燃烧效率显著降低.
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| 关 键 词： | 固体火箭冲压发动机 硼颗粒 点火 燃烧 两相流 突扩燃烧室 |
| 文章编号： | 1004-499X(2006)01-0068-04 |
| 收稿时间： | 2005-03-18 |
| 修稿时间： | 2005年3月18日 |
A Numerical Study on Ignition and Combustion of Boron Particles in the Flowfield of a Ducted Rocket Secondary Combustor |
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| HU Jian-xin,XIA Zhi-xun.A Numerical Study on Ignition and Combustion of Boron Particles in the Flowfield of a Ducted Rocket Secondary Combustor[J].Journal of Ballistics,2006,18(1):68-71. |
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| Authors: | HU Jian-xin XIA Zhi-xun |
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| Affiliation: | Institute of Aerospace and Material Engineering, NUDT, Changsha 410073, China |
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| Abstract: | The numerical simulation of two-phase flow in a boron based propellant ducted rocket based on discrete phase model was discussed. The ignition and combustion of boron particles was controlled by King model. Simple reaching flow model was established and used to simulate an experimental motor, and the distribution of particles in the supplementary combustion chamber was obtained. The results show that the particles which go into the dome head recirulation can be ignited easily, and the increase of the particle diameter bring out the ignition time increase. The efficiency will decrease. |
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| Keywords: | ducted rocket motor boron particle ignition combustion two phase flow side dump combustor |
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