Abstract
An experiment on bubble motion in a simple shear layer was performed in order to obtain fundamental knowledge of the force on the bubble and its lateral motion induced by the surrounding flow field. We explored the flow structure in the vicinity of the bubble in one plane and its deformation in two planes by particle image velocimetry (PIV)–laser-induced fluorescence (LIF) and a projection technique for two perpendicular planes, respectively. For our experiment, we chose a single air bubble with an equivalent bubble diameter D eq of 2~6 mm in a vertical shear flow. Velocity measurements were made using a digital high-speed CCD camera for PIV with fluorescent tracer particles. The second and third CCD cameras were used to detect the bubble’s shape and motion via backlighting from an array of infrared LEDs. We quantitatively studied the three-dimensional wake structure from measurements of the two-dimensional vortex structure and approximated three-dimensional shape deformation arranged from two perpendicular bubble images.
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References
Batchelor GK (1967) An introduction to fluid dynamics. Cambridge University Press, Cambridge
Bhaga D, Weber ME (1981) Bubbles in viscous liquid: shapes, wakes and velocities. J Fluid Mech 105:61–85
Birkhoff G (1950) Hydrodynamics. A study in logic, fact, and similitude. Princeton University Press, Princeton
Brücker C (1999) Structure and dynamics of the wake of bubbles and its relevance for bubble interaction. Phys Fluids 11:1781–1796
Bunner B, Tryggvason G (2002a) Dynamics of homogeneous bubbly flows. 1. Rise velocity and microstructure of the bubbles. J Fluid Mech 466:17–52
Bunner B, Tryggvason G (2002b) Dynamics of homogeneous bubbly flows. 2. Velocity fluctuations. J Fluid Mech 466:53–84
Clift R, Grace JR, Weber ME (1978) Bubbles, drops, and particles. Academic, New York
Duineveld PC (1995) The rise velocity and shape of bubbles in pure water at high Reynolds number. J Fluid Mech 292:325–332
Fan LS, Tsuchiya K (1990) Bubble wake dynamics in liquids and liquid-solid suspensions. Butterworth-Heinemann, Boston
Fujiwara A, Tokuhiro A, Hishida K (2000) Application of PIV/LIF and shadow image to a bubble rising in a linear shear flow field. In: Proc 10th international symposium on applications of laser technique to fluid mechanics, paper no 38-2
Hartunian RA, Sears WR (1957) On the instability of small gas bubbles moving uniformly in various liquids. J Fluid Mech 3:27–47
Kariyasaki A (1987) Behavior of a single gas bubble in a liquid flow with a linear velocity profile. In: Proc ASME–JSME Thermal Eng Joint Conference, pp 261–267
Kushch VI, Sangani AS, Spelt PDM, Koch DL (2002) Finite-Weber-number motion of bubbles through a nearly inviscid liquid. J Fluid Mech 460:241–280
Lamb H (1932) Hydrodynamics. Cambridge University Press, Cambridge
Levich VG (1962) Physicochemical hydrodynamics. Prentice-Hall, Englewood Cliffs, NJ
Lunde K, Perkins RJ (1997) Observation on wakes behind spheroidal bubbles and particles. In: Proc. ASME Fluids Eng Div Summer Meeting, Vancouver, paper no 97–3530
Magnaudet J, Eames I (2000) The motion of high-Reynolds number bubbles in inhomogeneous flows. Annu Rev Fluid Mech 43:659–708
Milne-Thomson LM (1968) Theoretical hydrodynamics. Dover, New York
Murai Y, Matsumoto Y, Yamamoto F (2001) Three-dimensional measurement of void fraction in a bubble plume using statistic stereoscopic image processing. Exp Fluids 30:11–21
Ohashi K, Shakutsui H, Tomiyama A, Hosokawa S (2001) Improvement of the accuracy of measurement for image proceeding of bubbles. In: Proc JSMF Annual Meeting, pp 195–196
Rust AC, Manga M (2002) Bubble shapes and orientations in low Re simple shear flow. J Colloid Interface Sci 249:476–480
Sakakibara J, Hishida K, Maeda M (1993a) Quantitative visualization of convective heat transfer near the stagnation region of an impinging jet. Exp Num Flow Visualiz ASME, FED 172:93–99
Sakakibara J, Hishida K, Maeda M (1993b) Measurement of thermally stratified pipe flow using image-processing techniques. Exp Fluids 16:82–96
Tokuhiro A, Maekawa M, Iizuka K, Hihsida K, Maeda M (1998) Turbulent flow past a bubble and ellipsoid using shadow-image and PIV techniques. Int J Multiphase Flow 24:1383–1406
Tokuhiro A, Fujiwara A, Iizuka K, Hihsida K, Maeda M (1999) Measurement in the wake region of two bubbles in close proximity by combined shadow-image and PIV techniques. J Fluids Eng121:191–197
Tomiyama A (1998) Computational bubble dynamics. J Jpn Soc Simulation Tech 17:196–204
Tsuge H, Hibino SI (1977) The onset conditions of oscillatory motion of single gas bubbles rising in various liquids. J Chem Eng Jpn 10:66–68
Zapryanov Z, Tabakova S (1999) Dynamics of bubbles, drops and rigid particles. Kluwer Academic, Dordrecht
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This research was conducted at the Center for Smart Control of Turbulence and was funded by the Japanese Ministry of Education, Culture, Sports, Science and Technology.
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Fujiwara, A., Danmoto, Y., Hishida, K. et al. Bubble deformation and flow structure measured by double shadow images and PIV/LIF. Exp Fluids 36, 157–165 (2004). https://doi.org/10.1007/s00348-003-0691-0
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DOI: https://doi.org/10.1007/s00348-003-0691-0