We are conducting fundamental researches on a variety of fluid flow phenomena including multiphase, cavitating, non-Newtonian and liquid metal flows. We are theoretically, numerically and experimentally addressing the issues in practical view of the utilization of passive/positive functions, the optimized control, and the avoidance of negative effects. We are also developing prediction and measurement methods to realize data acquisition and analysis for large-scale and multi-scale systems.


April 14th, 2024 (research info)
A paper has been published in Eur. Phys. J. E:
Watamura, Iwata and Sugiyama, Free surface oscillation driven by rotating stirrer

April 8th, 2024 (research info)
A paper has been published in Ocean Engineering:
Kidaka and Sugiyama, Three-phase flow analysis of rising shallow methane hydrate in gas lift system

April 2024 (Lab guidance for bachelor course students in FY2024)

March 25th, 2024 (award)
A master's course student Hirohata won Engineering Science Award

March 23rd, 2023 (award)
A master's course student Kidaka won Engineering Science Award

March 15th, 2023 (research info)
A paper has been published in Journal of Fluid Mechanics:
Zhang et al., Drag force on an oscillatory spherical bubble in shear-thinning fluid

August, 2022 (award)
A former student Kinami, a former Assistant Professor Watamura, and Professor Sugiyama won JSMF (Japan Society for Multiphase Flow) Award

June 22nd, 2021 (research info)
A paper has been published in Physical Review E:
Watamura et al., Bubble cascade may form not only in stout beers

March 24th, 2021 (award)
Naoyuki Kinami won JSME Miura Award

April 5th, 2019 (research info)
A paper has been published:
Watamura, T., Iwatsubo, F., Sugiyama, K., Yamamoto, K., Yotsumoto, Y. and Shiono, T., "Bubble cascade in Guinness beer is caused by gravity current instability"
Scientific Reports, 2019, DOI:10.1038/s41598-019-42094-0

Press release from Osaka Univ (May, 2019) Mystery of texture of Guinness beer
News article for the earlier study (APS DFD, Nov. 2017) Bubbles Clustering While Pouring Stout Beers? )

September 2018 For Prospective Students/ Admission
See www.entrance.es.osaka-u.ac.jp/features-news/830

January 2018 (research info)
"Bubbles and physics in a glass of drink" on the website at School of Engineering Science

March 2015 (research info)
"On the flow phenomena including gas-liquid interface" on the website at School of Engineering Science

July 2013
The final WEB lecture of Y. Tsujimoto