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首页> 外文期刊>Experiments in Fluids: Experimental Methods and Their Applications to Fluid Flow >mu PIV measurement of the 3D velocity distribution of Taylor droplets moving in a square horizontal channel
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mu PIV measurement of the 3D velocity distribution of Taylor droplets moving in a square horizontal channel

机译：MU PIV测量泰勒滴在方形水平通道中移动的3D速度分布

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摘要

This paper presents a mu PIV measurement of the 3D2C velocity distribution of Taylor droplets moving in a square horizontal microchannel at Cac=0.005 = 0.005. We reconstruct the third velocity component and present an accuracy assessment of the reconstruction based on a volume flow balance of the 3D3C velocity field. The velocity field allows the investigation of the 3D flow features such as stagnation regions and the shear rate distribution. The maximum shear rate is located at the entrances and exits of the wall films and at the corner flow (gutter) bypassing the Taylor droplet. The regions of high strain correspond to the cap positions of the Taylor droplets. An experimental data set allows visualization of the streamlines of the velocity distribution on the interface of a Taylor droplet and to directly relate it to the main and secondary vortices of the droplet phase velocity field. The measurement data are provided as a digital resource for the validation of numerical simulation or further assessment.
机译：本文介绍了在CAC = 0.005 = 0.005的方形水平微通道中移动的泰勒液滴3D2C速度分布的MU PIV测量。我们重建第三速度分量，并基于3D3C速度场的体积流量平衡来重建的精度评估。速度场允许研究诸如停滞区域的3D流特征和剪切速率分布。最大剪切速率位于壁膜的入口和壁射线的入口和旁路（排水沟）处旁路塔勒液滴。高应变区域对应于泰勒液滴的盖位置。实验数据集允许在泰勒液滴的界面上可视化速度分布的流线，并将其直接涉及液滴相速度场的主涡流和次级涡流。将测量数据作为数字资源提供，用于验证数值模拟或进一步评估。

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