Numerical study on the deformation of a gas bubble in uniform flow
Ocean Engineering, ISSN: 0029-8018, Vol: 254, Page: 111164
2022
- 3Citations
- 6Captures
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Article Description
The deformation of a gas bubble in uniform flow is numerically investigated using a dynamic body force method. In our parametric range, bubble steady shape is the superposition of two types of deformation: O-type deformation (corresponding to oblate eccentricity) and D-type deformation (corresponding to fore-aft symmetry). The calculation results show that O-type deformation mainly depends on surface tension, so the aspect ratio is mainly correlated with We ( ρldeUslip2/σ ). D-type deformation is mainly depends on the competition between pressure and viscous normal stress on bubble surface. Therefore, bubble fore-aft symmetry has a more significant correlation with Re ( ρldeUslip/μl ). We find that the critical Re of fore-aft symmetry slightly increases as We increases, and the interval of critical Re becomes narrower. When We exceeds 7, bubble will loss its fore-aft symmetry. A new power-law correlation of aspect ratio related to We and a phase diagram of bubble symmetry mapped to Re – We are given to predict bubble shape.
Bibliographic Details
http://www.sciencedirect.com/science/article/pii/S0029801822005728; http://dx.doi.org/10.1016/j.oceaneng.2022.111164; http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=85129765155&origin=inward; https://linkinghub.elsevier.com/retrieve/pii/S0029801822005728; https://dx.doi.org/10.1016/j.oceaneng.2022.111164
Elsevier BV
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