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ISSN Печать: 0276-1459
ISSN Онлайн: 1943-6181
Indexed in
THREE DIMENSIONAL INTERACTION OF BUBBLES AT INTERMEDIATE REYNOLDS NUMBERS
Краткое описание
Three-dimensional bubble-bubble interaction in quiescent liquid is investigated experimentally using a stereoscopic bubble-tracking technique. An accurate labeling method and a three-dimensional stereo-matching method are applied to the measurement of the three-dimensional centroid for individual bubbles. The velocity vectors of the bubbles are measured by a 3-D four-time-step tracking algorithm and then the relative velocity vectors of two nearest-neighbor bubbles are captured with high statistic reliability. With the measurement data for intermediate Reynolds numbers ranging from 5 to 75, the vertical attraction and the horizontal repulsion are confirmed for Re < 10 as known by a past study based on Navier-Stokes simulation. The new finding of the present measurement is that bubbles of Re > 30 have more repulsive velocity both in the horizontal and the vertical directions because they rise closely. Moreover, the three-dimensional structure of the bubble-bubble interaction is discussed with the data analysis of the interaction vector fields.
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Ninomiya N, Takanashi Y, Measurement about the interaction between two falling droplets, Journal of Physics: Conference Series, 147, 2009. Crossref
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Murai Yuichi, Frictional drag reduction by bubble injection, Experiments in Fluids, 55, 7, 2014. Crossref
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OGASAWARA Toshiyuki, SHIRAI Shota, TAKAHIRA Hiroyuki, Experimental analysis of the clustering behavior of spherical bubbles rising along an inclined flat plate, Transactions of the JSME (in Japanese), 82, 837, 2016. Crossref
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Ogasawara Toshiyuki, Takahira Hiroyuki, The effect of contamination on the bubble cluster formation in swarm of spherical bubbles rising along an inclined flat wall, Nuclear Engineering and Design, 337, 2018. Crossref
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Ninomiya Nao, Tsukada Shogo, Ikeda Motohiro, Doh Deog-Hee, Interaction between two falling droplets in the liquid–liquid two-phase flow, Journal of Visualization, 21, 6, 2018. Crossref
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Oishi Y., Tohge Y., Tasaka Y., Murai Y., Bubble clustering in a horizontal turbulent channel flow investigated by bubble-tracking velocimetry, International Journal of Multiphase Flow, 120, 2019. Crossref
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Velasco Lívio José, Venturi Diego Nei, Fontes Douglas Hector, de Souza Francisco José, Numerical simulation of drag reduction by microbubbles in a vertical channel, European Journal of Mechanics - B/Fluids, 92, 2022. Crossref