The bubble breakups in a jet bubbling reactor are captured using a high‐speed camera and the velocity field is measured by particle image velocimetry. Two typical breakup patterns, jet breakup and jet‐vortex breakup are observed. The breakup time interval of the jet‐vortex breakup is two orders of magnitude higher than the jet breakup. The probability of the jet‐vortex breakup and the jet breakup accounting in the total breakup events increases and decreases with the jet velocity and the mother bubble size, respectively. The bubble breakup region increases with the jet velocity. The bubble breakup frequency increases with the turbulent dissipation rate and the mother bubble size. The average number of daughter bubbles increases with the Weber number. An L‐shaped daughter bubble size distribution is observed. Empirical correlations are established for the bubble breakup frequency, the average number of daughter bubbles and daughter bubble size distribution, and fitted well with the experimental results.

中文翻译：

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喷射鼓泡反应器中气泡破裂的实验测量

使用高速相机捕获喷射鼓泡反应器中的气泡破裂，并通过粒子图像测速仪测量速度场。观察到两种典型的破裂模式，即喷射破裂和涡旋破裂。射流涡旋破裂的破裂时间间隔比射流破裂高两个数量级。在总破裂事件中，射流涡旋破裂和射流破裂占几率分别随射流速度和母泡大小而增加和减小。气泡破裂区域随射流速度而增加。气泡破裂频率随着湍流耗散率和母气泡尺寸的增加而增加。子气泡的平均数目随韦伯数增加。观察到L形子气泡尺寸分布。