Computational Study in Bottom Gas Injection Using the Conservative Level Set Method

Processes

JorgeE. Rivera-Salinas¹  SeydyL. Olvera-Vazquez²  VíctorH. Gutierréz-Pérez²  KarlaM. Gregorio-Jáuregui³  JoséA. Romero-Serrano³  Alejandro Cruz-Ramírez³  HeidiA. Fonseca-Florido⁴  CarlosA. Ávila-Orta⁴ 

[1] Catedrático CONACyT—Departamento de Procesos de transformación, Centro de Investigación en Química Aplicada—CIQA, Saltillo 25294, Coahuila, Mexico;Departamento de Formación Profesional Específica, Instituto Politécnico Nacional—Unidad Profesional Interdisciplinaria de Ingeniería campus Zacatecas—UPIIZ, Zacatecas 98160, Mexico;Departamento de Ingeniería en Metalurgia y Materiales, Instituto Politécnico Nacional, Escuela Superior de Ingeniería Química e Industrias Extractivas—ESIQIE, UPALM, México City 07738, Mexico;Departamento de Materiales Avanzados, Centro de Investigación en Química Aplicada—CIQA, Saltillo 25294, Coahuila, Mexico;

关键词: bottom gas injection;    bubble formation;    free surface;    conservative level set method;   

DOI  :  10.3390/pr8121643

来源: DOAJ

【 摘 要 】

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.

【 授权许可】

Unknown