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首页> 外文期刊>International Journal of Heat and Mass Transfer >Development of the horizontal swirl mixer with a fillet shape
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Development of the horizontal swirl mixer with a fillet shape

机译：圆角形状的卧式旋流混合机的开发

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In this study, a new shaped continuous mixer with simple mixing structure is proposed, aiming to suppress the short pass phenomenon to gain high mixing performance. Therefore, fluid motion of secondary flow by centrifugal force and swirling flow is focused. Furthermore, validity was examined by numerical analysis.Flow visualization was performed, and the mixing performance was verified using the electric conductivity method and transmission luminance measurement.As a result, a horizontal disc mixing tank with a fillet shape as the shape of the mixer was proposed. In the radial direction, it is predicted that forced vortex occurs near the center and Quasi-free vortices occurs at the opposite edge. Moreover, at opposite edge in the vertical direction, a pair of upper and lower vortices was observed. It was confirmed that a secondary flow was generated at the opposite edge.Concentration dispersion rapidly progresses in the vicinity of the side opposite edge of the mixing tank. It is confirmed that dispersion in the vicinity of the outlet part is small and uniformly mixed in the mixing tank regardless of the angle. It is regard as the consequence of the shear effect caused by the swirl flow generated near the outlet portion and the cross-sectional mixing due to the secondary flow generated at the opposite edge. It was found that it has mixing performance of about N = 9–14, comparing to the complete mixing tank train model.
机译：本研究提出一种新型的具有简单混合结构的连续混合器，旨在抑制短程现象，从而获得较高的混合性能。因此，集中了由离心力和回旋流引起的二次流的流体运动。此外，通过数值分析检验了有效性，进行了流动可视化，并使用电导率法和透射亮度测量法验证了混合性能，结果，以圆角形状作为混合器形状的卧式圆盘混合罐为建议。在径向方向上，预计强迫涡旋会在中心附近发生，准无涡旋会在相对的边缘发生。此外，在垂直方向的相对边缘处，观察到一对上下涡旋。确认在相反的边缘产生了二次流。浓度分散在混合槽的相反的侧面附近迅速进行。可以确认，与角度无关，出口部附近的分散较小，在混合槽内均匀地混合。可以认为是由于在出口部分附近产生的涡流和在相反边缘产生的二次流所引起的横截面混合所引起的剪切效应的结果。与完整的混合罐列模型相比，发现其混合性能约为N = 9-14。

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