Abstract An image analysis based method is developed in this work to quantitatively evaluate the mixing performance of a special soft-elastic reactor (SER), which promotes mixing through elastic wall movement. The source data collected are RGB values in each pixel of consecutive colour images taken by a CCD camera. The method can determine global indicators such as the average mixing level (i.e., the degree of homogeneity, uniquely characterized by the “distance” away from the ideally mixed state) and the mixing time. More importantly, it allows tracking of localized mixing performance throughout the entire mixing process by quantifying spatial and frequency-domain distributions of the mixing level. This simple, generic, and cost-effective method should be a powerful tool for mixing performance evaluation of most reactors with a variety of mixing mechanisms. It can be readily applied in the future to improved design and optimized operation of the SER.

中文翻译：

---

在使用基于 RGB 的图像分析方法表征的软弹性反应器 (SER) 中混合

摘要 在这项工作中开发了一种基于图像分析的方法来定量评估特殊软弹性反应器 (SER) 的混合性能，该反应器通过弹性壁运动促进混合。收集的源数据是由 CCD 相机拍摄的连续彩色图像的每个像素中的 RGB 值。该方法可以确定全局指标，例如平均混合水平（即均匀度，唯一表征为与理想混合状态的“距离”）和混合时间。更重要的是，它允许通过量化混合级别的空间和频域分布来跟踪整个混合过程中的局部混合性能。这种简单、通用、且经济高效的方法应该是对大多数具有多种混合机制的反应器进行混合性能评估的有力工具。将来可以很容易地将其应用于 SER 的改进设计和优化操作。