Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7060258 | International Journal of Multiphase Flow | 2016 | 8 Pages |
Abstract
The velocity of Taylor bubbles in inclined pipes is reduced if a lubricating liquid film between the bubble and the pipe wall is not present. An analytical model predicting the gravity-driven drainage of the lubricating film is presented in this article. The model is then used to establish a criterion for film breakup: if t¯bubble=tbubble/Ï<0.01 the thin film would not break up, where tbubble is the bubble's passage time, and Ï is the characteristic film drainage time based on the fluid properties, pipe geometry, and critical film thickness. The model is validated experimentally with Taylor bubbles in inclined pipes (5° to 90°, the latter being vertical) with stagnant liquids (ethanol, methanol, and mixtures of deionized water and methanol).
Keywords
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Fluid Flow and Transfer Processes
Authors
E. Lizarraga-Garcia, J. Buongiorno, M. Bucci,