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PreprintCC BY-NC-ND 4.0arXiv

On the rise of a Taylor bubble-drop assembly in a vertical tube

  • Quan Yao
  • Guangzhao Zhou
Open at sourcePDFDOICite

Abstract

In a liquid-filled vertical tube, a Taylor drop typically rises far more slowly than a Taylor bubble owing to the much larger density and dynamic viscosity of the former. In this work, we demonstrate experimentally and numerically that instead of being slowed down by the attached drop, a Taylor bubble-drop assembly rises at the same velocity as an isolated Taylor bubble, leading to a significantly faster rise of the Taylor drop. We discuss the underlying mechanism and use an analytical model to predict the drop radius within the assembly. This phenomenon offers a means for bubble-assisted rapid transport of an immiscible liquid phase in vertical tubes, with potential applicability in gas-lifting systems in confined environments.

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Cite

BibTeXRIS
BibTeX
@misc{yao2026rise,
  title = {{On the rise of a Taylor bubble-drop assembly in a vertical tube}},
  author = {Quan Yao and Guangzhao Zhou},
  howpublished = {arXiv},
  year = {2026},
  month = oct,
  doi = {10.48550/arxiv.2610.39586},
  eprint = {2610.39586},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2610.39586},
  note = {CC BY-NC-ND 4.0},
}
RIS
TY  - UNPB
TI  - On the rise of a Taylor bubble-drop assembly in a vertical tube
AU  - Quan Yao
AU  - Guangzhao Zhou
PY  - 2026
DA  - 2026/10/29
PB  - arXiv
DO  - 10.48550/arxiv.2610.39586
UR  - https://arxiv.org/abs/2610.39586
AB  - In a liquid-filled vertical tube, a Taylor drop typically rises far more slowly than a Taylor bubble owing to the much larger density and dynamic viscosity of the former. In this work, we demonstrate experimentally and numerically that instead of being slowed down by the attached drop, a Taylor bubble-drop assembly rises at the same velocity as an isolated Taylor bubble, leading to a significantly faster rise of the Taylor drop. We discuss the underlying mechanism and use an analytical model to predict the drop radius within the assembly. This phenomenon offers a means for bubble-assisted rapid transport of an immiscible liquid phase in vertical tubes, with potential applicability in gas-lifting systems in confined environments.
ER  -