Turbulent Structure of a Gas-Liquid Impinging Jet

被引：0

作者：

S. V. Alekseenko

D. M. Markovich

V. I. Semenov

机构：

来源：

Fluid Dynamics | 2002年 / 37卷

关键词：

submerged impinging jet; gas-liquid; turbulence; coherent structures;

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学科分类号：

摘要：

The turbulent structure of a submerged axisymmetric impinging jet containing small gas bubbles is studied experimentally under conditions of periodic external excitation. On the basis of measuring the surface-friction pulsatory component in the jet impinging on an obstacle, the effect of the suppression of large-scale eddies at large gas volume fractions is registered. The conditions of resonant growth of coherent structures and the suppression of wide-band turbulence are determined for both the single-phase and the two-phase impinging jet. An analysis of the development of different pulsatory friction components in the impinging-jet gradient region is presented.

引用

页码：684 / 694

页数：10

共 33 条

[1]

Serizawa A.(1975)Turbulence structure of air-water bubbly flow. 2. Local properties Intern. J. Multiphase Flow 2 235-246

[2]

Kataoka I.(1987)3-D turbulence structure and phase distribution measurements in bubbly two-phase flows Intern. J. Multiphase Flow 13 327-343

[3]

Michiyuoshi I.(1989)Effect of particle size on modulating turbulent intensity Intern. J. Multiphase Flow 15 279-285

[4]

Wang S.K.(1992)Turbulence modulation in particulate flows — a theoretical approach Intern. J. Multiphase Flow 18 779-785

[5]

Lee S.J.(1994)Flow modulation of planar free shear layer with large bubbles— direct numerical simulations Intern. J. Multiphase Flow 20 1109-1128

[6]

Jones O.C.(1971)Orderly structure in jet turbulence J. Fluid. Mech. 48 547-591

[7]

Gore R.A.(1974)On density effects and large structure in turbulent mixing layer J. Fluid. Mech. 64 775-816

[8]

Crowe C.T.(1982)Subharmonics and vortex merging in mixing layers J. Fluid. Mech. 119 443-473

[9]

Yuan I.(1983)Mean flow in round bubble plumes J. Fluid. Mech. 133 345-376

[10]

Michaelides E.E.(1986)Structure of turbulent bubbly jets. I; II Intern. J. Multiphase Flow 12 99-126

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