Path instabilities of air bubbles rising in clean water
patt-sol
2007-05-23 v1 Pattern Formation and Solitons
Abstract
Experiments are conducted to study the path and shape of single air bubbles (diameter range 0.10- 0.20cm) rising freely in clean water. The experimental results demonstrate that the bubble shape has a bistable state, i. e. the bubble chooses to be in spherical or ellipsoidal shape depending on its generation mechanism. The path of a spherical/ellipsoidal bubble is found to change from a straight path to a zigzag/spiral path via a supercritical/subcritical bifurcation when the Reynolds number of the bubble exceeds a threshold.
Keywords
Cite
@article{arxiv.patt-sol/9804002,
title = {Path instabilities of air bubbles rising in clean water},
author = {Mingming Wu and Moteza Gharib},
journal= {arXiv preprint arXiv:patt-sol/9804002},
year = {2007}
}
Comments
3 pages, RevTeX, 4 figures, submitted to Physics of Fluids