Combined two-dimensional velocity and temperature measurements using a high-speed camera and luminescent particles
Combined two-dimensional velocity and temperature measurements using a high-speed camera and luminescent particles
复制标题
使用高速相机和发光粒子进行二维速度和温度测量
DOI：
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发表时间：
2010
期刊：
影响因子：
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通讯作者：
K. Okamoto
中科院分区：
文献类型：
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作者：
S. Someya;S. Someya;D. Ochi;Yanrong Li;K. Tominaga;K. Ishii;K. Okamoto
提出了一种利用温敏粒子（TSParticles）、脉冲紫外激光器和高速摄像机测量二维温度和速度的组合方法。采用离子交换法和Eu（TTA）发光染料合成了TSParticles。用于合成TSParticles的颗粒的尺寸和材料是可选择的。TS粒子响应流中的温度变化，也可以作为速度场的示踪剂。将TS颗粒接种到由MEXFLON树脂构成的复杂形状通道中的加热水流中，MEXFLON树脂具有与水完全相同的折射率。可以无失真地记录结构外流动的粒子图像。通过UV脉冲激光激发TSParticles，并以每秒40，000帧的速度记录TSParticles的发光，作为用于基于寿命的温度分析的连续图像。我们的方法的另一个优点是，高时间分辨率的PIV可以在没有高频激光的情况下进行。记录的图像也用于粒子图像测速（PIV）计算。
This paper proposes a combined method for two-dimensional temperature and velocity measurements using temperature sensitive particles (TSParticles), a pulsed ultraviolet (UV) laser and a single high-speed camera. TSParticles were synthesized using ion-exchange particles and Eu(TTA) luminescent dye. The size and material of the particles for synthesizing TSParticles are selectable. TSParticles respond to temperature changes in a flow and can also serve as tracers for the velocity field. TSParticles were seeded into a heated water flow in a complex-shaped channel constructed of MEXFLON resin, which has a refractive index exactly equal to that of water. Particle images of flow beyond the structure can be recorded without any distortion. The TSParticles were excited by the UV pulsed laser and the luminescence from the TSParticles were recorded at 40,000 frames per second as sequential images for a lifetime-based temperature analysis. Another advantage of our approach is that high time-resolved PIV can be carried out without a high-frequency laser. The recorded images were also used for the particle image velocimetry (PIV) calculation.