| Full text | |
| Author(s): |
Kurimoto, Ryo
;
Neumeister, Roberta Fatima
;
Komine, Ryuya
;
Ribatski, Gherhardt
;
Hayashi, Kosuke
Total Authors: 5
|
| Document type: | Journal article |
| Source: | Chemical Engineering Science; v. 299, p. 11-pg., 2024-07-29. |
| Abstract | |
The shapes and terminal velocities of single bubbles in the surface tension force and the inertial force dominant regime were measured in a vertical bundle consisting of fluorinated ethylene propylene fibers of 2 mm diameter. Three kinds of fiber arrangements were tested with the fiber pitches Lp of 18, 12, and 6 mm. The terminal velocities in the bundles were larger than those in the absence of a fiber bundle and increased with decreasing Lp. The bubble shapes were significantly deformed by fibers, which would be the cause of the velocity increase, i.e., a reduction in the form drag. The terminal velocities in the bundles were well predicted by the combination of the drag correlation in the absence of a fiber bundle and the multiplier for bubbles in fiber bundles. (AU) | |
| FAPESP's process: | 22/03832-6 - Theoretical and experimental study of the flow development for single-phase flow and dispersed bubbles flow in vertical tube bundles |
| Grantee: | Roberta Fátima Neumeister |
| Support Opportunities: | Scholarships in Brazil - Post-Doctoral |
| FAPESP's process: | 23/09527-3 - Two-dimensional and three-dimensional measurements of fluid velocity in rod bundle applying spatial filter velocimetry |
| Grantee: | Roberta Fátima Neumeister |
| Support Opportunities: | Scholarships abroad - Research Internship - Post-doctor |