| 铝颗粒点火数值模拟 |
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| 引用本文： | 吴婉娥,郭而铃,朱左明,焦金路. 铝颗粒点火数值模拟[J]. 化学推进剂与高分子材料, 2009, 7(1): 52-54 |
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| 作者姓名： | 吴婉娥 郭而铃 朱左明 焦金路 |
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| 作者单位： | 第二炮兵工程学院,陕西西安,710025;96322部队,湖南怀化,418400 |
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| 摘 要： | 分析了准稳态铝颗粒在高温氧化剂中由于传热和表面的化学反应导致升温-熔化-升温-点火的过程，建立了铝颗粒点火模型，并对点火过程进行数值模拟。计算结果给出了对流传热、辐射传热、熔化热和异相表面反应热等对点火的影响。研究结果表明在点火过程中，铝的氧化在颗粒温度达到一定温度（T〉1000K）时才比较明显；点火时铝单质质量分数随环境温度的升高而略有增加，与颗粒尺寸无关；点火延时随着环境温度升高和颗粒半径的减小而缩短。
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| 关 键 词： | 铝颗粒 点火机制 数值模拟 点火延时 |
Numerical Simulation of Single Aluminum Particle Ignition |
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| WU Wan-e,GUO Er-ling,ZHU Zuo-ming,JIAO Jin-lu. Numerical Simulation of Single Aluminum Particle Ignition[J]. Chemical Propellants & Polymeric Materials, 2009, 7(1): 52-54 |
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| Authors: | WU Wan-e GUO Er-ling ZHU Zuo-ming JIAO Jin-lu |
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| Affiliation: | WU Wan-e1,GUO Er-ling1,ZHU Zuo-ming1,JIAO Jin-lu2 |
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| Abstract: | The calefaction-melting-calefaction-ignition course of quasi-steady aluminium particles due to the heat transfer and the chemical reaction in high-temperature oxidant was analysed. The ignition model of the aluminium particles was presented. The numerical simulation for the ignition course was carried out. The calculated results gave the effects of heat transter from convection and radiation, melting heat, heat released by heterogeneous suface reaction, etc. on ignition. The studied results show that in the... |
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| Keywords: | aluminum particle ignition mechanism numerical simulation ignition delay time |
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