Time-resolved determination of velocity fields on the example of a simple water channel flow, using a real-time capable FPGA-based camera platform

IF 2.5 3区工程技术 Q2 ENGINEERING, MECHANICAL Experiments in Fluids Pub Date : 2023-03-21 DOI:10.1007/s00348-023-03617-8

Tino Steinmetz, Martin Schaeper, André Kleinwächter, Jonas Otto, Andreas Richter, Ralf Poosch, Nils Damaschke

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Abstract

Field Programmable Gate Arrays (FPGAs) have become a widely available computational resource for real-time image processing and can be used in time-critical optical process measurements. In this study, we investigate the applicability of the spatial filtering technique for time-resolved velocity field determination, on the example of a simple water tunnel flow. For this, the spatial filtering technique was implemented for a custom FPGA platform and analyzed regarding the effect of spatial and temporal resolution on the accuracy of the results. It was possible to prove the algorithm as suitable for velocity field estimation and identify algorithm parameters, which allow for increasing the accuracy of the results.

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以一个简单的水道流为例，利用一个实时的基于fpga的相机平台，进行了速度场的时间分辨测定

现场可编程门阵列(fpga)已成为一种广泛可用的实时图像处理计算资源，可用于时间要求严格的光学过程测量。在本研究中，我们以一个简单的水洞流为例，研究空间滤波技术在确定时间分辨速度场中的适用性。为此，在定制的FPGA平台上实现了空间滤波技术，并分析了空间分辨率和时间分辨率对结果精度的影响。可以证明该算法适用于速度场估计，并确定算法参数，从而提高结果的准确性。图形抽象

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来源期刊

Experiments in Fluids 工程技术-工程：机械

CiteScore

5.10

自引率

12.50%

发文量

157

审稿时长

3.8 months

期刊介绍： Experiments in Fluids examines the advancement, extension, and improvement of new techniques of flow measurement. The journal also publishes contributions that employ existing experimental techniques to gain an understanding of the underlying flow physics in the areas of turbulence, aerodynamics, hydrodynamics, convective heat transfer, combustion, turbomachinery, multi-phase flows, and chemical, biological and geological flows. In addition, readers will find papers that report on investigations combining experimental and analytical/numerical approaches.