| 固体火箭冲压发动机补燃室流场三维数值计算研究 |
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| 引用本文： | 张永芝,李卓,李海龙.固体火箭冲压发动机补燃室流场三维数值计算研究[J].航空发动机,2009,35(3):22-26. |
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| 作者姓名： | 张永芝 李卓 李海龙 |
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| 作者单位： | 1. 内蒙古工业大学理学院,呼和浩特,010051
2. 中国航天科工集团第六研究院,呼和浩特,010030 |
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| 摘 要： | 应用概率密度函数非预混模型，对固体火箭冲压发动机补燃室内的湍流燃烧进行了数值模拟。模拟结果表明：补燃室内发生着复杂的三维化学反应流动，存在对掺混燃烧有重要影响的头部回流和轴向涡流。补燃室内复杂的温度分布和空气与燃气的掺混、燃烧及流动状态有密切关系。提高空燃比，可增强补燃室中燃气的回流和轴向涡流强度，加大掺混力度，从而提高燃烧效率。
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| 关 键 词： | 固体火箭冲压发动机 补燃室 燃烧效率 概率密度函数 空燃比 数值模拟 |
Three-DimensionaI Numerical Simulation of Afterburner Flow Field of Solid Rocket Ramjet |
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| Authors: | ZHANG Yong-zhi LI zhuo LI Hai-long |
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| Institution: | ZHANG Yong-zhi, LI zhuo, LI Hai-long (1. College of Science, Inner Mongolia University of Technology, Huhehot 010051, China; 2. The 6th Academy of China Aerospace Science ＆ Industry Corp., Huhehaote 010030, China) |
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| Abstract: | The numerical simulation of turbulent combustion in the afterburner of solid rocket ramjet was performed by applying the probability density function non-premixed mode. The simulation results indicate that the afferburner has complicated three-dimensional chemical reaction flow and the effects of the nase backflow and axial swirl on the dilution combustion. In the afterburner, the complicated temperature distribution has close relation with the dilution, combustion and flow of the air and gas. The intensity of the gas backflow and axial swirl ond the dilution in the afterburner are enhanced by increasing the air-to-fuel ratio, and then the combustion efficiency is improved. |
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| Keywords: | solid rocket ramjet afterburner combustion efficiency probability density function air-to-fuel ratio numerical simulation |
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