NO激光诱导荧光在JF-10激波风洞中的应用

来源 :高温气体动力学国家重点实验室2017年度夏季学术研讨会 | 被引量 : 0次 | 上传用户：beret85

【摘要】

：

本文记述了利用激光诱导荧光技术对风洞中流场参数的测量工作.JF-10爆轰风洞中气流强烈的自发光以及由于设备庞大导致有限的光子收集效率成为本实验最大的挑战.为了克服该问

【作者】

：

严浩张少华余西龙

【机构】

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中国科学院力学研究所高温气体动力学国家重点实验室,北京市海淀区100190;中国科学院大学工程科学学院,北京邮编100049中国科学院力学研究所高温气体动力学国家重点实验室,北京市海淀区100190

【出处】

：

高温气体动力学国家重点实验室2017年度夏季学术研讨会

【发表日期】

：

2017年8期

【关键词】

：

激波风洞流场测量激光诱导荧光

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论文部分内容阅读

本文记述了利用激光诱导荧光技术对风洞中流场参数的测量工作.JF-10爆轰风洞中气流强烈的自发光以及由于设备庞大导致有限的光子收集效率成为本实验最大的挑战.为了克服该问题,将以往的激光诱导荧光使用的平面光束沿传播方向旋转90度,拍摄方向垂直于平面法线方向以及激光传播方向,使拍摄到的荧光信号集中在一条窄线上.这种设置下,即使在激波后依然能得到明显的荧光信号,而且信噪比得到很大的提升.

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NO激光诱导荧光在JF-10激波风洞中的应用

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