The rheology of non‐Newtonian fluids in agitated vessels is complex making equipment sizing more an art than a science. To increase our understanding and to resolve the data gap for computational fluid dynamics validation, we present a detailed particle image velocimetry study of the hydrodynamics of Carbopol encountered in a 70 L mechanically mixed (A310) tank at three different rotational speeds (100, 250, 500 rpm). Bulk flow visualizations show that the flow field below the impeller is highly influenced by the rheological behavior of the fluid. Moreover, an analysis of the shear rate and viscosity revealed important spatial heterogeneities. An estimation of the Reynolds number classified the rotational speeds as the onset of the transitional regime (100), in the transitional regime (250) and turbulent conditions (500 rpm). This data set consists of local mean and fluctuating velocities at different locations below the impeller, which are available for validation and further study.

中文翻译：

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非牛顿流体中轴向叶轮的流体动力学分析

非牛顿流体在搅拌容器中的流变特性很复杂，使得设备的尺寸比艺术更重要。为了加深我们的理解并解决用于计算流体动力学验证的数据鸿沟，我们提供了详细的颗粒图像测速研究，研究了在三种不同转速（100、250， 500 rpm）。大量流动的可视化结果显示，叶轮下方的流场受流体的流变行为的影响很大。此外，对剪切速率和粘度的分析显示出重要的空间异质性。雷诺数的估计将转速分类为过渡状态（100），过渡状态（250）和湍流状态（500 rpm）的开始。