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Satellites in the inviscid breakup of bubbles
1Departamento de Ingenieŕia Aeroespacial y Mećanica de Fluidos, Universidad de Sevilla, Sevilla, Spain. jgordill@us.es
Gas inertia significantly influences bubble breakup, leading to the formation of tiny satellite bubbles. This phenomenon is linked to high gas velocities during pinch-off, with satellite bubble size decreasing as gas-to-liquid density ratio lessens.
Area of Science:
- Fluid dynamics
- Bubble dynamics
- Multiphase flow
Background:
- Bubble breakup is a critical phenomenon in various industrial and natural processes.
- Previous studies have often neglected the role of gas inertia in bubble fragmentation.
Purpose of the Study:
- To investigate the essential role of gas inertia in the breakup of gas bubbles.
- To understand the formation mechanism of satellite bubbles during bubble pinch-off.
Main Methods:
- Theoretical analysis of gas bubble breakup dynamics.
- Inclusion of gas inertia effects in the modeling of bubble pinch-off.
Main Results:
- Gas inertia plays a crucial role in the breakup of gas bubbles.
- Tiny satellite bubbles are formed due to large gas velocities near pinch-off when the gas-to-liquid density ratio (Lambda) is non-zero.
- A closed-form expression for satellite bubble diameter was derived, showing a decrease with decreasing Lambda.
Conclusions:
- Gas inertia is a key factor governing satellite bubble formation during gas bubble breakup.
- The derived expression for satellite diameter agrees with experimental observations of micron-sized bubbles.
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