Plumes of air and carbon-dioxide (CO_2) bubbles in stratified water were studied experimentally and numerically. It is important to understand the plume behavior of droplets or bubbles in the ocean in marine environmental engineering. In sequestration of CO_2 in the ocean, liquid CO_2 is injected in the form of droplets, and thermal stratification in enclosed seas is possibly destroyed by a bubble generator. This study focuses on the relationship between intrusion depth and strati- fication intensity, gas flow rate, and bubble size. A desktop- sized tank was used to achieve no-background-flow conditions for salt stratification.
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