In this paper, the mixing efficiency of two slightly different fluted mixing elements is studied. RGB spectral analysis is used for the quantification of the mixing. The overall mixing appears to be equal after sufficient mixing time. The mixer without the wiping flight, however, creates a stagnation layer of material which rotates between the mixer and the barrel. This layer is characterized by a long residence time. The residence time of the layer is twice as long as for a mixer with the wiping flight. The long residence time is again measured by RGB spectral analysis and also visualized in the video. The results of a 3D FEM simulation shows that the mass flow rate of the stagnation layer represents almost 50% of the total mass flow rate.
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机译：在本文中，研究了两个略微不同的凹槽混合元件的混合效率。 RGB光谱分析用于定量混合。 在充分的混合时间后，总混合似乎是相等的。 然而，没有擦拭飞行的混合器产生旋转在混合器和桶之间的滞隙材料层。 该层的特征在于长期停留时间。 层的停留时间是与擦拭飞行的混合器的两倍。 通过RGB光谱分析再次测量长停留时间，并在视频中可视化。 3D FEM模拟的结果表明，停滞层的质量流量占总质量流量的几乎50％。
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