Abstract
BackgroundAdvanced-Flow Reactor (AFR) can produce excellent mixing and is proven to be highly efficient and easy to expand, which is closely related to the fluid flow characteristics. MethodThe visualization experimental study was carried out to study the behavior and mechanism of the bubble breakup in a single Corning G1 module. Significant findingsThe results showed that the breakup behavior in AFR had a significant regularity at low Reynolds numbers (Re<1000). The breakup behavior was closely related to the capillary number Ca and the virtual length l0 of bubbles, and the criterions was also obtained. Most of bubbles in arc-shaped junction divergence of AFR were breakup with permanent obstruction (POB), which could be divided into two stages: squeezing stage and rapid pinch-off stage. The modified equation obtained in this paper can roughly describe the change of the bubble neck at the squeezing stage of POB. The research results provide a theoretical basis for industrial application of AFR and the development of next-generation reactors.
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