FSVPy:用于荧光条纹测速(FSV)的基于python的软件包

IF 3 2区 工程技术 Q2 MECHANICS Journal of Rheology Pub Date : 2022-09-02 DOI:10.1122/8.0000521
Han Lin, Brendan C. Blackwell, Connor C. Call, Shanliangzi Liu, Claire Liu, M. Driscoll, J. J. Richards
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引用次数: 0

摘要

设计先进的热电系统需要将易于测量的输运特性(如粘度和电导率)与系统性能变量(如功耗和效率)联系起来的预测本构方程。在这项工作中,我们探索了使用荧光粒子条纹分析来直接测量压力驱动流的局部速度场,并引入了一个新的Python包(FSVPy)来执行分析。荧光条纹测速法将高速成像与高荧光颗粒相结合,产生含有荧光条纹的图像,荧光条纹的长度和强度与局部流速有关。通过捕获整个样品体的图像,可以对三维速度场进行量化和重构。我们通过表征几种非牛顿流体(胶束十六烷基吡啶氯化溶液、卡波波尔940和聚乙二醇)的通道流动曲线来证明这种技术。然后我们探索更复杂的流,其中由于流中遇到的微尺度特征而产生显着的加速度。我们展示了FSVPy处理各种形状条纹的能力,并使用沿条纹的可变强度从单个图像中提取特定位置的速度测量值。因此,我们证明了FSVPy是一种灵活的工具,可用于从各种流体和流动条件中提取局部速度测量结果。
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FSVPy: A python-based package for fluorescent streak velocimetry (FSV)
Predictive constitutive equations that connect easy-to-measure transport properties (e.g., viscosity and conductivity) with system performance variables (e.g., power consumption and efficiency) are needed to design advanced thermal and electrical systems. In this work, we explore the use of fluorescent particle-streak analysis to directly measure the local velocity field of a pressure-driven flow, introducing a new Python package (FSVPy) to perform the analysis. Fluorescent streak velocimetry combines high-speed imaging with highly fluorescent particles to produce images that contain fluorescent streaks, whose length and intensity can be related to the local flow velocity. By capturing images throughout the sample volume, the three-dimensional velocity field can be quantified and reconstructed. We demonstrate this technique by characterizing the channel flow profiles of several non-Newtonian fluids: micellar Cetylpyridinium Chloride solution, Carbopol 940, and Polyethylene Glycol. We then explore more complex flows, where significant acceleration is created due to microscale features encountered within the flow. We demonstrate the ability of FSVPy to process streaks of various shapes and use the variable intensity along the streak to extract position-specific velocity measurements from individual images. Thus, we demonstrate that FSVPy is a flexible tool that can be used to extract local velocimetry measurements from a wide variety of fluids and flow conditions.
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来源期刊
Journal of Rheology
Journal of Rheology 物理-力学
CiteScore
6.60
自引率
12.10%
发文量
100
审稿时长
1 months
期刊介绍: The Journal of Rheology, formerly the Transactions of The Society of Rheology, is published six times per year by The Society of Rheology, a member society of the American Institute of Physics, through AIP Publishing. It provides in-depth interdisciplinary coverage of theoretical and experimental issues drawn from industry and academia. The Journal of Rheology is published for professionals and students in chemistry, physics, engineering, material science, and mathematics.
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