TY - JOUR
T1 - Computational study in bottom gas injection using the conservative level set method
AU - Rivera-Salinas, Jorge E.
AU - Gregorio-Jáuregui, Karla M.
AU - Cruz-Ramírez, Alejandro
AU - Gutierréz-Pérez, Víctor H.
AU - Romero-Serrano, José A.
AU - Olvera-Vazquez, Seydy L.
AU - Fonseca-Florido, Heidi A.
AU - Ávila-Orta, Carlos A.
N1 - Publisher Copyright:
© 2020 by the authors. Licensee MDPI, Basel, Switzerland.
PY - 2020/12
Y1 - 2020/12
N2 - 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.
AB - 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.
KW - Bottom gas injection
KW - Bubble formation
KW - Conservative level set method
KW - Free surface
UR - http://www.scopus.com/inward/record.url?scp=85097963879&partnerID=8YFLogxK
U2 - 10.3390/pr8121643
DO - 10.3390/pr8121643
M3 - Artículo
AN - SCOPUS:85097963879
SN - 2227-9717
VL - 8
SP - 1
EP - 18
JO - Processes
JF - Processes
IS - 12
M1 - 1643
ER -