Shape and Steady Drag on Single Rising Bubbles
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- SATO Ayaka
- 九州大学大学院工学府
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- SHIROTA Minori
- 産業総合技術研究所
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- SANADA Toshiyuki
- 静岡大学工学部
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- WATANABE Masao
- 九州大学大学院工学研究院
Bibliographic Information
- Other Title
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- 単一気泡の形状と定常抗力
- タンイツ キホウ ノ ケイジョウ ト テイジョウ コウリョク
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Abstract
Relations between drag coefficients CD and bubble shapes are investigated by comparing our experimental results with both analytical [Moore, J. Fluid Mech., 23, 749-766 (1965)] and numerical results [Blanco & Magnaudet, Phys. Fluids, 7(6), 1265-1274(1995)] on ellipsoidal bubbles rising in a quiescent clean liquid. We clarify that the analytically obtained CD overestimates the experimental results especially in the case of either high aspect ratio or low Reynolds number, and that numerically obtained results for ellipsoidal bubbles well predict our experimental results. We also show that the effect of the deviation in the shape from the ellipsoid, i.e., fore-aft asymmetry, on CD is negligible; CD for fore-aft asymmetry bubbles is in good agreement with the numerically obtained CD for ellipsoidal bubbles.
Journal
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- Progress in Multiphase Flow Research
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Progress in Multiphase Flow Research 3 35-41, 2008
THE JAPANESE SOCIETY FOR MULTIPHASE FLOW
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Details 詳細情報について
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- CRID
- 1390001205274661120
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- NII Article ID
- 10021154319
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- NII Book ID
- AA12204080
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- ISSN
- 18816088
- 18815804
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- NDL BIB ID
- 9553787
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
- KAKEN
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- Abstract License Flag
- Disallowed