| Revista: | Brazilian journal of chemical engineering |
| Base de datos: | PERIÓDICA |
| Número de sistema: | 000308614 |
| ISSN: | 0104-6632 |
| Autores: | Scheid, C.M1 Puget, F.P Halasz, M.R.T2 Massarani, G |
| Instituciones: | 1Universidade Federal Rural do Rio de Janeiro, Instituto de Tecnologia, Seropedica, Rio de Janeiro. Brasil 2Universidade Federal do Rio de Janeiro, Instituto Alberto Luiz Coimbra de Pos-Graduacao e Pesquisa de Engenharia, Rio de Janeiro. Brasil |
| Año: | 1999 |
| Periodo: | Dic |
| Volumen: | 16 |
| Número: | 4 |
| Paginación: | 351-358 |
| País: | Brasil |
| Idioma: | Inglés |
| Tipo de documento: | Artículo |
| Enfoque: | Experimental |
| Resumen en inglés | Results gathered from the literature on the dynamics of bubbles in liquid are correlated by means of a formulation traditionally employed to describe the dynamics of isometric solid particles. It is assumed that the shape of the bubble depends, by means of the Eotvos number, on its diameter and on the gas-liquid surface tension. The analysis reported herein includes the dynamics of the isolated bubble along with wall and concentration effects. However, the effects of gas circulation in the bubble, which result in terminal velocities higher than those of a rigid sphere, are not being considered. A limited number of experimental points are obtained employing a modified version of the Mariotte flask which permits the precise measure of bubble volume. A classic bubble column is also employed in order to measure gas holdup in the continuous phase. Experiments were carried out employing air, with distilled water, potable water, water with variable amounts of surfactant and glycerin as the liquid phase |
| Disciplinas: | Física y astronomía |
| Palabras clave: | Dinámica de fluidos, Burbujas, Efectos de concentración, Velocidad terminal |
| Keyword: | Physics and astronomy, Fluid dynamics, Bubbles, Concentration effects, Terminal velocity |
| Texto completo: | Texto completo (Ver HTML) |
