Abstract
Submerged gas injection is widely used in process industries to enhance reaction rates through better mixing in
liquids. A common side effect of massive gas injection is the occasional local backflow of the liquid towards
the nozzle outlet known as ‘back attack’or ‘bubble knocking’. This local backflow occurs randomly and is still
not fully understood. Based on experimental observations and complimentary numerical simulations, this study
presents a physics-based explanation for the back-attack mechanism, and provides new insights for design and
optimization of massive gas injection systems.
liquids. A common side effect of massive gas injection is the occasional local backflow of the liquid towards
the nozzle outlet known as ‘back attack’or ‘bubble knocking’. This local backflow occurs randomly and is still
not fully understood. Based on experimental observations and complimentary numerical simulations, this study
presents a physics-based explanation for the back-attack mechanism, and provides new insights for design and
optimization of massive gas injection systems.
| Original language | English |
|---|---|
| Title of host publication | Proceedings of the 12th International Conference on Multiphase Flows |
| Subtitle of host publication | ICMF 2025, Toulouse, France, May 12-16, 2025 |
| Number of pages | 2 |
| Edition | 1 |
| Publication status | Published - 2025 |
Fields of science
- 203 Mechanical Engineering
- 211104 Metallurgy
- 204007 Thermal process engineering
- 103043 Computational physics
- 203024 Thermodynamics
- 204006 Mechanical process engineering
- 103032 Fluid mechanics
- 203016 Measurement engineering
JKU Focus areas
- Sustainable Development: Responsible Technologies and Management
- Digital Transformation