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首页> 外文期刊>Applied radiation and isotopes: including data, instrumentation and methods for use in agriculture, industry and medicine >Study on the validation of the computer fluid dynamics modeling for a continuously flowing water vessel with the industrial SPECT using a radiotracer
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Study on the validation of the computer fluid dynamics modeling for a continuously flowing water vessel with the industrial SPECT using a radiotracer

机译：用放射性示踪剂对工业SPECT连续流动水容器的计算机流体动力学模型进行验证的研究

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摘要

The industrial Single Photon Emission Computerized Tomography (SPECT) system comprised of 30 sets of lead collimated 2. in. NaI(Tl) detectors was built and utilized for measuring the spatial distribution of radiotracers as a function of time at a predefined cross-sectional level of a tank with a diameter of 300. mm and a height of 780. mm. In a stable flow condition, a radiotracer was injected into the upstream of a tank and then the measurement data were processed for the two dimensional concentration mapping of the radiotracers with a time step of 1. s. The images were compared with numerical simulation results obtained from the Computational Fluid Dynamics modeling that has been incorporated with several different kinds of turbulence models. The comparison shows one model gives a better result than any others in terms of the similarity of the radiotracer distribution pattern. This study demonstrates the significant possibility of industrial SPECT technology for visualizing flow characteristics in a multi-dimensional way and for validating the CFD modeling.
机译：建立了工业单光子发射计算机断层扫描（SPECT）系统，该系统由30组准直的2. in。NaI（Tl）铅探测器组成，并用于在预定的横截面水平上测量随时间变化的放射性示踪剂的空间分布直径为300. mm，高度为780. mm的水箱。在稳定的流动条件下，将放射性示踪剂注入储罐的上游，然后以1 s的时间步长对放射性示踪剂的二维浓度分布进行测量数据处理。将图像与从计算流体动力学模型获得的数值模拟结果进行了比较，该模型已与几种不同类型的湍流模型结合在一起。比较显示，就放射性示踪剂分布模式的相似性而言，一个模型给出的结果优于任何其他模型。这项研究证明了工业SPECT技术以多维方式可视化流动特性并验证CFD建模的巨大可能性。

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