用于低速非常规蒸汽流的粒子图像测速的可行性

2019/08/14   下载量: 1

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应用领域 其他
检测样本 其他
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采用LaVision的Davis 8.3.0软件平台,IagerHS4M高速相机,以及LDY300高重频激光器,构成一套时间分辨粒子成像测速系统(TR-PIV),并利用该系统对低速非常规蒸汽流流场进行了实验测量和理论分析。

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    This work assesses the feasibility of the planar PIV technique to study the characteristics of a siloxane vapor D4. Titanium dioxide (TiO2) seeding particles were used to track the motion around a rotating disk in a low speed flow. Vector fields of natural convection (NC) and a superposition of NC and rotating flow were selected as exemplary cases. The particles were capable of tracing the flow since the calculated Stokes number St is 6.5 × 10^-5. The quality of the experimental data is assessed by means of particle seeding density and particle
image Signal to Noise ratio (S/N). The final results are deemed acceptable for an accurate assessment of the flow field. Rejected outliers are below 2.3% and the relative uncertainties corresponding to the average velocity fields are below 1%.

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