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首页> 外文期刊>Journal of visualization >Quantitative visualization of the mixing characteristics of a multilayer static mixer by planar laser-induced fluorescence
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Quantitative visualization of the mixing characteristics of a multilayer static mixer by planar laser-induced fluorescence

机译：通过平面激光诱导的荧光进行多层静态混合器混合特性的定量可视化

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摘要

Mixing is an inseparable part of many industries. Static mixers are motionless inserts that are widely used for mixing. In this study, planar laser-induced fluorescence (PLIF) was used to study the mixing characteristics of a multilayer static mixer. The effects of the arrangement angle of layer elements of the static mixer were examined. Arrangement angles of 0°, 45°, and 90° were investigated at four different flow-rate ratios of two mixing fluids. The mixing performance of each angle was evaluated with both qualitative and quantitative approaches. The volume fractions of the flows were obtained from the PLIF results, and the mixing index was calculated. The friction factor was measured to assess the pressure loss of each arrangement angle. The results show that the arrangement angles do not affect the mixing index for higher flow ratios. However, at the lowest flow ratio, the angle of 45° resulted in the highest mixing index of 74.9%, while at 0° and 90°, the values reached 66.4% and 69.8%, respectively. In regard to pressure loss, 45° also resulted in the lowest friction factor.
机译：混合是许多行业的不可分割的一部分。静态混合器是广泛用于混合的一系列动态插入件。在该研究中，使用平面激光诱导的荧光（PLIF）研究多层静态混合器的混合特性。检查了静态混合器层元素的排列角的影响。在两个混合流体的四种不同的流速比下进行0°，45°和90°的布置角度。通过定性和定量方法评估每个角度的混合性能。流动的体积分数是从PLIF结果获得的，并计算混合指数。测量摩擦因子以评估每个排列角的压力损失。结果表明，布置角度不会影响更高的流量比的混合指数。然而，在最低流量比下，45°的角度导致最高混合指数为74.9％，而在0°和90°时，值分别达到66.4％和69.8％。关于压力损失，45°也导致摩擦系数最低。

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