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    科学领域:

    • 流体动力学 流体动力学
    • 光学诊断仪器的使用.
    • 空气动力学 航空动力学

    背景情况:

    • 五秒激光电子激发标记 (FLEET) 速度测量对于无粒流量测量至关重要,特别是在超音速和超音速模式下.
    • 目前的方法通常使用单个激光线和相机提供一维的单元速度数据.
    • 虽然存在多点和多组件系统,但它们往往缺乏全面的空间覆盖.

    研究的目的:

    • 通过在多个点上实现三组分速度测量来增强FLEET速度测量.
    • 改进FLEET测量的空间分辨率和覆盖范围.
    • 为了展示一种新的断层成像方法,用于先进的流动诊断.

    主要方法:

    • 利用断层成像来重建多个FLEET生成的等离子斑点的3D位置.
    • 采用四角望远镜将四个不同的摄像头视图结合到一个单一的高速摄像头.
    • 引入了玻璃子,以产生九个距离很近的FLEET点,信号损失最小 (<10%).

    主要成果:

    • 成功地实现了多个FLEET点的断层重建,用于3D速度分析.
    • 证明了多点,三元件速度测量的能力.
    • 在未扩展的喷流中验证了该技术.

    结论:

    • 开发的断层扫描FLEET系统显著提高了测量维度和空间覆盖.
    • 这一进步为复杂的流场提供了更全面的理解.
    • 该技术显示出在具有挑战性的空气动力学环境中进行详细分析的前景.