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论文:2018,Vol:36,Issue(6):1193-1201 |
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引用本文： |
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常江, 吴功平, 吴浩东, 郝雪杰. 点火通道对点火装置工作过程影响分析[J]. 西北工业大学学报 |
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Chang Jiang, Wu Gongping, Wu Haodong, Hao Xuejie. Analyzing Influence of Ignition Gas Flow Pipe of Igniter on Working Process[J]. Northwestern polytechnical university |
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| 点火通道对点火装置工作过程影响分析 |
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| 常江1, 吴功平1, 吴浩东2, 郝雪杰2 |
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1. 武汉大学 动力与机械学院, 湖北 武汉 430072;
2. 中国航天科工集团 第四研究院, 湖北 孝感 432100 |
| 摘要: |
| 基于气体动力学和计算流体力学的相关理论，采用FLUENT流场计算软件，对液体火箭发动机固体式点火装置在2种工况（Ⅰ为无点火通道、Ⅱ为经过点火通道）工作时的稳态流场进行了数值模拟，在此基础上分析了点火通道对液体火箭发动机固体式点火装置工作特性的影响。结果表明：在燃烧室压强为大气压时，点火装置在工况Ⅱ状态下，喉部燃气速度达不到声速，声速位置移到点火通道某一位置；出口处燃气速度、喉部处压强和温度相对于工况Ⅰ增加；燃气流量、出口处压强和温度相对于工况Ⅰ减小。在不同燃烧室压强时，两种工况下出口处速度、压强、温度和流量均有一个稳定段；工况Ⅱ的燃气流量小于工况Ⅰ。 |
| 关键词:
流体力学
点火装置
燃烧室
稳态流场
数值模拟
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| Analyzing Influence of Ignition Gas Flow Pipe of Igniter on Working Process |
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| Chang Jiang1, Wu Gongping1, Wu Haodong2, Hao Xuejie2 |
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1. School of Power and Mechanical Engineering, Wuhan University, Wuhan 430072, China;
2. The Forth Research Academy, CASIC, Xiaogan 432100, China |
| Abstract: |
| Based on gas dynamics and computational fluid dynamics, the numerical simulation of the steady-state flow field of igniter working in the two conditions was conducted with FLUENT. The numerical simulation results were validated by experiments. Influences of ignition gas flow pipe on the igniter's working performance were analyzed on the basis of test validation. The analysis results show that the combustion chamber pressure has atmospheric pressure and that the igniter works with ignition gas flow pipe. The velocity of throat is lower than the speed of sound and the sonic position moves to the position of ignition gas flow pipe; the velocity, pressure and temperature of throat increase;but the flux, pressure and temperature of outlet decrease. Under the different conditions of combustion chamber pressure, the outlet velocity, pressure, temperature and flux have a stable section;but the flux decreases. |
| Key words:
computational fluid dynamics
ignition
combustion chambers
steady-state flow field
numerical simulation
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| 收稿日期: 2017-11-23
修回日期:
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| DOI: |
| 基金项目: 中国航天科工集团自主创新项目（天工研[2014]33号）资助 |
| 通讯作者: 吴功平(1961-),武汉大学教授,主要从事机械电子工程研究。邮箱:gpwu@whu.edu.cn
Email：gpwu@whu.edu.cn |
| 作者简介: 常江(1980-),武汉大学高级工程师、博士研究生,主要从事能源与动力研究。
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