Experimental Study of the Effect of the Surfactant on the Single Bubble Rising in Stagnant Surfactant Solutions and a Mathematical Model for the Bubble Motion,Industrial & Engineering Chemistry Research

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Experimental Study of the Effect of the Surfactant on the Single Bubble Rising in Stagnant Surfactant Solutions and a Mathematical Model for the Bubble Motion
Industrial & Engineering Chemistry Research ( IF 3.8 ) Pub Date : 2022-06-23 , DOI: 10.1021/acs.iecr.2c01620
Yi Luo _{1,

2} , Zhengchao Wang _{1,

2} , Bo Zhang _{1,

2} , Kai Guo _{1,

2} , Longyun Zheng _{1,

2} , Wenyu Xiang _{1,

2} , Hui Liu _{1,

2} , Chunjiang Liu _{1,

2}

Affiliation

Bubble behavior has a significant effect on the gas–liquid mass transfer in bubbly flows. In this study, the bubble rising velocity and bubble shape in ultrapure water and surfactant solutions are experimentally measured by high–speed photography. The bubble velocity decreases and the bubble shape tends to be spherical due to the presence of the surfactant. As the bubble diameter increases, the rising velocity increases and bubble deformation becomes significant. The variations of the bubble velocity and shape exhibit different features under different surfactant concentrations. The effect of surface contamination on the bubble velocity is analyzed. Based on the stagnant cap model, a mathematical model coupling the surfactant adsorption and desorption on the bubble surface and the dynamic bubble motion in stagnant solutions is further proposed. The proposed model is validated by comparing the calculated bubble velocities with experimental values.

中文翻译：

表面活性剂对停滞表面活性剂溶液中单个气泡上升影响的实验研究及气泡运动的数学模型

气泡行为对气泡流中的气液传质具有显着影响。在这项研究中，通过高速摄影实验测量了超纯水和表面活性剂溶液中的气泡上升速度和气泡形状。由于表面活性剂的存在，气泡速度降低，气泡形状趋于球形。随着气泡直径的增加，上升速度增加，气泡变形变得显着。在不同的表面活性剂浓度下，气泡速度和形状的变化表现出不同的特征。分析了表面污染对气泡速度的影响。在停滞帽模型的基础上，进一步提出了将表面活性剂在气泡表面的吸附和解吸与停滞溶液中的动态气泡运动耦合的数学模型。

更新日期：2022-06-23

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