Abstract The behavior of a pair bubble column rising in an insulating liquid in the presence of a high voltage electric field was investigated. The purpose of this study was to investigate the bubble column flow regime and the possibility of transferring it without changing the basic parameters of the bubble column. The use of the electric field was the main factor in applying this change to the bubble column. The results show that the employment of an external electric field significantly changes the size, detachment frequency and the pattern of the bubble column. With an increase in electrical potential, the bubble growth time and detachment volume (bubble size) decline continuously due to electrical stress on the bubble surface. Moreover, at sufficiently high electric potential, the electric field intensifies the bubble collision and coalescence, which subsequently leads to more enhancements of the heat and mass transfer in the bubble column reactor. The use of the electric field increased the bubble detachment for D b = 1.12 m m by 250%, and for the largest bubble in range D b = 3.32 m m , this increase was about 80%.

中文翻译：

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高压直流电场下成对气泡柱的实验研究

摘要 研究了一对气泡柱在高压电场作用下在绝缘液体中上升的行为。本研究的目的是研究泡罩塔流态以及在不改变泡罩塔基本参数的情况下转移它的可能性。电场的使用是将这种变化应用于气泡柱的主要因素。结果表明，外部电场的使用显着改变了气泡柱的尺寸、脱离频率和图案。随着电位的增加，由于气泡表面的电应力，气泡生长时间和脱离体积（气泡尺寸）不断下降。此外，在足够高的电势下，电场加强了气泡的碰撞和聚结，从而进一步增强了气泡塔反应器中的传热和传质。电场的使用使 D b = 1.12 mm 的气泡脱离增加了 250%，对于 D b = 3.32 mm 范围内的最大气泡，这种增加约为 80%。