open access

https://hdl.handle.net/2115/97584

Bubble-bearing fluid flows on an inclined plane

英語

2025-04-01

AIP Publishing

Physics of fluids

37(4)

041701

The effect of bubble-bearing state on fluid flows on an inclined plane is clarified. The deceleration or acceleration compared to the single-phase state is determined by a non-dimensional parameter Pi, a ratio of the gravity-induced shear stress to the restoring force originated by the surface tension. At Pi<O(1), the spherical bubbles contribute to increasing the viscosity and decelerating the flow. At Pi>O(1), the deformed bubbles decrease the viscosity and accelerate the flow. The result is validated in experiments under the former condition, and this framework is applied to predict the arrival time of the bubble-bearing fluid flows. Through this work, it is shown that extending the application of the rheology model beyond just materials science to fluid mechanics offers new avenues for elucidating the underlying physics of bubble-bearing fluid flows across diverse disciplines.

学術雑誌論文

Version of Record

This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in Kohei Ohie, Yuji Tasaka, Yuichi Murai; Bubble-bearing fluid flows on an inclined plane. Physics of Fluids 1 April 2025; 37 (4): 041701 and may be found at https://doi.org/10.1063/5.0261398.

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