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Updated: Jun 24, 2025
11:59
High-speed Particle Image Velocimetry Near Surfaces
Published on: June 24, 2013
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概括
本研究介绍了一种新的仪器,用于同时进行1D温度和速度测量,而不使用痕迹仪. 它使用虚拟成像相位阵列 (VIPA) 进行增强的干扰测量雷利散射,使流中1D诊断成为可能.
科学领域:
- 流体力学和热力学 流体力学和热力学
- 光学诊断和光谱学等领域的研究.
- 流量计量学 流量计量学
背景情况:
- 干涉计雷利散射 (IRS) 是一种用于测量流体性质的技术.
- 传统的IRS仅限于0D (点或多点) 测量.
- 准确的温度和速度测量对于理解流体动力学至关重要.
研究的目的:
- 开发一种无痕迹仪,1D体积测量仪器,可同时测量温度和速度.
- 使用虚拟成像相位阵列 (VIPA) 调整干扰计雷利散射.
- 将IRS的功能从0D扩展到1D空间分辨率.
主要方法:
- 一个虚拟成像相位阵列 (VIPA) 取代了IRS仪器中的传统的法布里-佩罗标准.
- 雷利-布里卢恩光谱分析被用于对等体流的温度诊断.
- 一个具有法布里-佩罗 (FP) 标准的参考腿监测激光波长漂移.
主要成果:
- 基于VIPA的仪器成功实现了同时进行1D温度和速度测量.
- 准确性和精度在层状流体实验中得到验证.
- 该技术在加热的流式空气喷射中进行了演示,表明其在复杂的流中可应用.
结论:
- 基于VIPA的IRS仪器可以进行新的1D,无痕迹仪的温度和速度测量.
- 这一进步扩展了IRS的空间分辨率,为流量分析提供了新的可能性.
- 开发的技术适合在具有挑战性的环境中进行诊断,例如流喷气.
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