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改善了深紫外平面激光诱导光技术的定位标准和成像方案

Hongchun Wu^1,2, Shutao Dai¹, Zhi Zhang¹

¹Key Laboratory of Optoelectronic Materials Chemistry and Physics, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Science, Fuzhou 350002, China.

|September 24, 2025

概括

研究人员开发了一种新的物理模型和算法,用于基于氧化的平面激光诱导光 (NO-PLIF),以准确测量高速流动. 这一进步提高了超高速风洞测试的准确性和适应性.

科学领域:

流体动力学和空气动力学
光学诊断和光谱学在
高力流量测量高力流量测量

背景情况:

基于氧化的平面激光诱导光 (NO-PLIF) 是流动可视化的关键诊断技术.
精确测量高热风洞中的高速流量存在重大挑战.
现有的NO-PLIF方法在准确性和适应高速背景噪声方面的局限性.

研究的目的:

开发一个物理模型,用于NO-PLIF信号在高度风洞的演变.
为了提高超高速流量的流速计算算法的准确性和稳定性.
为了提高短暂N2流量的测量准确度,使用了一种新的高速成像系统.

主要方法:

开发了一个物理模型来描述NO-PLIF信号的演变,并分析了影响光条纹对比度的因素.
通过实施中心定位定位标准,改进了流速计算算法.
设计并使用了一种具有显著缩短间隔的双高速紫外线成像系统.

主要成果:

中心定位定位标准在3公里/秒以上的流量中显示出更高的精度和比峰值方法更好的噪声适应性.
缩短的间隔有效地提高了超高速流程中的测量精度.
成功测量了短暂的N2流,其速度在3.2至5.2公里/秒之间.

结论:

开发的物理模型和改进的算法增强了NO-PLIF在高速流动诊断方面的功能.
中心定位标准和缩短的间隔对于准确的超高速流量测量是有效的.
未来的工作将将定位标准扩展到交叉相关算法,用于更高速度的测量.

关键词:

工程工程学工程学工程学材料科学材料科学材料科学物理物理物理物理物理

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