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Accuracy of volumetric flow rate inflow/outflow measurement by integrating PIV velocity fields
Measurement Science and Technology ( IF 2.4 ) Pub Date : 2020-09-24 , DOI: 10.1088/1361-6501/ab9bb7
Rick Cressall 1 , Robbie Schaap 2 , Douglas R Neal 3 , Alex Mychkovsky 4 , John Charonko 5 , Barton L Smith 6
Affiliation  

In this paper, the usefulness of planar Particle Image Velocimetry (PIV) measurements to determine the volumetric flow rate from a rectangular or round jet exit is assessed. Both two-component PIV (2C–PIV) and through-plane three-component (3C) stereo PIV (SPIV) data sets were acquired at the exit of a turbulent, rectangular nozzle and a round nozzle with Reynolds numbers between 10 000 and 100 000. The PIV data sets were processed using a variety of algorithms. The time-averaged results were then spatially integrated across the jet exits and compared to a calibrated flow meter. Recommendations for each method are developed and discussed with potential drawbacks. The accuracy of the measurement was found to be a weak function of the Reynolds number of the flow. Two-component PIV was found to underestimate the volumetric flow rate by 1%–4% depending on the integration scheme and SPIV underestimated volumetric flow rate by 2%.

中文翻译:

通过整合PIV速度场来测量体积流量流入/流出的精度

在本文中,评估了用平面粒子图像测速(PIV)测量来确定矩形或圆形射流出口的体积流量的有用性。在湍流,矩形喷嘴和雷诺数在10000和100之间的圆形喷嘴的出口处,均获得了两组分PIV(2C–PIV)和直通平面三组分(3C)立体PIV(SPIV)数据集000.使用各种算法处理了PIV数据集。然后将时间平均的结果在整个射流出口进行空间积分,并与经过校准的流量计进行比较。提出并讨论了每种方法的建议,并提出了潜在的缺点。发现测量的准确性是流的雷诺数的弱函数。
更新日期:2020-09-25
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