In this work, the power draw and shear profile of a novel in-line rotor-stator mixer were studied experimentally and the laminar flow regime was simulated. The power draw of the rotor-stator mixer was investigated experimentally using viscoplastic shear-thinning fluid and the results of the obtained power consumptions were verified through simulations. The power draw constant and Otto-Metzner coefficient were determined from the result of experimental data and through simulations. A new method is suggested for the determination of the Otto-Metzner coefficient for the Herschel–Bulkley model and the term efficiency is introduced. It was shown that the proposed method can be applied successfully for the prediction of the Otto-Metzner coefficient for the mixing of viscoplastic shear-thinning fluids. The effect of geometry and rotor speed on power consumption and shear rate profile in the investigated mixer is discussed from the results of the simulations. It was found that numerical methods are a convenient tool and can predict the power draw of the in-line rotor-stator mixer successfully.

中文翻译：

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粘塑性流体在线转子-定子混合器的功率输入分析

在这项工作中，实验研究了新型在线转子-定子混合器的功率消耗和剪切曲线，并模拟了层流状态。使用粘塑性剪切稀化流体对转子-定子混合器的功率消耗进行了实验研究，并通过仿真验证了所获得的功率消耗的结果。从实验数据的结果并通过仿真确定了功率消耗常数和奥托-梅茨纳系数。建议使用一种新方法来确定Herschel-Bulkley模型的Otto-Metzner系数，并引入效率一词。结果表明，所提出的方法可以成功地用于粘塑性剪切稀化流体混合的Otto-Metzner系数的预测。从仿真结果中讨论了几何形状和转子速度对所研究的混合器中的功率消耗和剪切速率分布的影响。发现数值方法是一种方便的工具，可以成功地预测在线转子-定子混合器的功率消耗。