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在马赫4的卢德维格管中使用衍射光学元件的多点FLEET速度测量

Farhan Siddiqui, Mark Gragston

|March 4, 2024

概括

这项研究引入了一种使用衍射光学与秒激光电子激发标记 (FLEET) 速度计的新方法,用于高速风洞测量. 新的并行查看配置使墙壁正常流量诊断能够在没有激光冲击的情况下实现.

科学领域:

流体动力学和空气动力学
光学测量技术的使用
基于激光的诊断技术

背景情况:

高速风洞对于航空航天研究至关重要.
精确的流速测量对于理解空气动力学现象至关重要.
传统的速度测量方法在复杂的流环境中可能存在局限性.

研究的目的:

开发和评估用于秒激光电子激发标记 (FLEET) 速度计的新型配置.
调查用于增强FLEET测量的衍射光学元件的使用.
在马赫4路德维格管中展示这些技术的实用性.

主要方法:

一个衍射光学元件与FLEET速度测量的集成.
探索两个观看配置:直角和与激光束轴平行.
在马赫4的路德维格管中进行示范,用于高速流体表征.

主要成果:

平行查看配置允许进行墙壁正常的FLEET测量.
这种配置可以避免激光直接撞击表面.
在高速流动环境中成功探测了多个位置.

结论:

衍射光学和FLEET速度计的联合使用为高速流量诊断提供了一个多功能工具.
平行查看方法为墙壁边界流量测量提供了显著的优势.
这种技术提高了风洞测试中详细空气动力学分析的能力.

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