| 射流屏点火方案及其验证 |
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| 引用本文： | 尹群.射流屏点火方案及其验证[J].航空动力学报,1992,7(1):69-71,100. |
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| 作者姓名： | 尹群 |
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| 作者单位： | 沈阳航空发动机研究所 沈阳428信箱110015 |
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| 摘 要： | 一、射流屏点火方案1.高速燃烧室点火条件 高速燃烧室内通常存在外层的高速主动流 ,它不但用作燃烧的氧源 ,而且带动核心气体形成稳定火焰的涡流结构 ,同时还起隔离火焰与室壁的作用。它的外层一般情况下是净空气 ,内层掺有燃油。为了在工作状态下点火器不被火焰烧毁 ,点火器的插入深度受到限制 ,其端部接近含油层的外边界。所以端部表面的释能点 (放电电极 )处在高速主动流中。高速气流使点火器释能表面紊流度高 ,热交换率大 ,又使电火花持续时间内流过电极的气体质量增加。两者都使火花生热不能集中加温质量恰当的气团 ,不利于生成温度足…
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| 关 键 词： | 射流 半导体电嘴 燃烧区 点火器 点火范围 火焰核心 流态 高速燃烧 点火系统 燃烧室 |
| 收稿时间： | 8/1/1990 12:00:00 AM |
THE JET SCREEN IGNITION SCHEME AND ITS EXPERIMENTAL VERIFICATION |
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| Yin Qun.THE JET SCREEN IGNITION SCHEME AND ITS EXPERIMENTAL VERIFICATION[J].Journal of Aerospace Power,1992,7(1):69-71,100. |
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| Authors: | Yin Qun |
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| Institution: | Shenyang Aeroengine Research Institute |
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| Abstract: | A jet screen ignition scheme has been developed based on the investigation of the ignition environment of the burning zone in the high speed flow combustor.It features a short time change of the flow pattern in the high speed flow near the wall during the ignition period,which is caused by a thin and bend high speed gas jet.A specially designed ignition experiment on a model of an aerogasturbine combustor verified success of the proposed scheme and showed its potentiality in enlarging the ignition range of the high speed flow combustor. |
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