环境光下旋转流记录速度和询问窗口的优化：PIV分析
Optimizing recording speed and interrogation window for rotating flow recorded in the ambient light: PIV analysis
摘要：
本研究报告了在环境光下使用智能手机相机而不是专业相机和高功率激光器/LED等高科技设备对表面流剖面进行PIV分析。此外，它提供了一个逐步的方法来优化记录速度和询问窗口大小的涡流产生在不同的旋转频率的磁搅拌器。并以磁力搅拌器产生的涡流为例说明了优化方法。使用基于Matlab的应用程序PIVlab进行了分析。最后，将优化后的参数与Burger涡模型进行了比较，结果表明优化后的参数与PIV数据吻合较好。该方法还可以测定不透明液体的表面流动。
英文摘要：
The present study reports PIV analysis of the surface flow profile using a smartphone camera in ambient light instead of high-tech equipment like a professional camera and high-power laser/ LEDs. Additionally, it provides a stepwise method for optimizing recording speed and interrogation window size for the vortex flow generated at different rotational frequencies of the magnetic stirrer. The optimization method has been explained with an example of the vortex flow generated by a magnetic stirrer. The analysis has been carried out using the Matlab-based application PIVlab. Finally, the optimized parameters have been compared with the Burger vortex model, which shows good agreement with the PIV data. The proposed method can also determine the sureface flow of opaque liquids.
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