Computational Study in Bottom Gas Injection Using the Conservative Level Set Method
| Autor: | Carlos A. Ávila-Orta, Alejandro Cruz-Ramírez, José A. Romero-Serrano, Jorge E. Rivera-Salinas, Heidi A. Fonseca-Florido, Karla M. Gregorio-Jáuregui, Seydy Lizbeth Olvera-Vazquez, Victor Hugo Gutiérrez-Pérez |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Level set method
Materials science Buoyancy Bubble Bioengineering Richardson extrapolation engineering.material lcsh:Chemical technology 01 natural sciences 010305 fluids & plasmas lcsh:Chemistry Physics::Fluid Dynamics 0103 physical sciences Chemical Engineering (miscellaneous) free surface lcsh:TP1-1185 0101 mathematics bottom gas injection Jet (fluid) Process Chemistry and Technology Mechanics conservative level set method 010101 applied mathematics lcsh:QD1-999 Free surface engineering Liquid bubble Body orifice bubble formation |
| Zdroj: | Processes Volume 8 Issue 12 Processes, Vol 8, Iss 1643, p 1643 (2020) |
| ISSN: | 2227-9717 |
| DOI: | 10.3390/pr8121643 |
| Popis: | This paper presents a computational study on bottom gas injection in a cylindrical tank. The bubble formation at submerged orifices, bubble rising, and interactions between bubbles and bubbles with the free surface were studied using the conservative level set method (CLSM). Since the gas injection is an important technique in various fields and this process is quite complicated, the scenario was chosen to quantify the efficacy of the CLSM to describe the gas-liquid complex interactions with fast changes in the surface tension force and buoyancy force. The simulation accuracy is verified with the grid convergence index (GCI) approach and Richardson Extrapolation (RE) and is validated by comparing the numerical results with experimental observations, theoretical equations, and published data. The results show that the CLSM accurately reproduces the bubble formation frequency, and that it can handle complicated bubble shapes. Moreover, it captures the challenging phenomena of interaction between bubbles and free surface, the jet of liquid produced when bubbles break through the free surface, and the rupture of the film of liquid. Therefore, the CLSM is a robust numerical technique to describe gas-liquid complex interactions, and it is suited to simulate the gas injection operation. |
| Databáze: | OpenAIRE |
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