近岸破碎波水体掺气及气泡输运过程研究

doi:10.11978/2018013

Abstract

Abstract:

To investigate how air is entrained and the formation and transport of bubbles under breaking waves, we carry out studies using particle image velocimetry (PIV), high-speed camera, bubble measuring system, and a three-dimensional numerical model based on the Navier-Stokes equations. The results show that the established numerical model can reasonably capture the air entrainment and bubble transport process under the action of breaking wave. A large bubble cavity is formed during wave breaking phase, which in turn produces a large amount of bubble cloud. Bubbles increase the turbulence of water, resulting in the formation of a large number of vortexes and water splash near the interface with the air. The burst of bubbles consumes a large amount of wave energy, and the larger turbulent kinetic energy is related to bubble generation. Moreover, we find that the number of bubbles increases linearly with the increase of average turbulent kinetic energy.

Key words: breaking wave, air entrainment, bubble, OpenFOAM, turbulent kinetic energy

CLC Number:

P731.22

Bin DENG, Yao TANG, Changbo JIANG, Mengfei WANG. Air entrainment and bubble movement processes in breaking waves[J].Journal of Tropical Oceanography, 2018, 37(6): 33-40.

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[1]	韩磊, 袁业立, 2007. 波浪破碎卷入气泡的泡径分布理论模型[J]. 中国科学 D辑: 地球科学, 37(9): 1273-1279.
[2]	蒋昌波, 王刚, 邓斌, 等, 2015. 不同尺度水平并列气泡运动特性三维数值研究[J]. 应用基础与工程科学学报, 23(2): 233-245.
	JIANG CHANGBO, WANG GANG, DENG BIN, et al, 2015. Three-dimensional numerical simulation of movement characteristic of two parallel rising bubbles with different scales[J]. Journal of Basic Science and Engineering, 23(2): 233-245 (in Chinese with English abstract).
[3]	张阿漫, 2006. 水下爆炸气泡三维动态特性研究[D]. 哈尔滨: 哈尔滨工程大学.
	ZHANG AMAN, 2006. 3D dynamic behavior of underwater explosion bubble[D]. Harbin:Harbin Engineering University (in Chinese with English abstract).
[4]	张淑君, 吴锤结, 2008. 气泡之间相互作用的数值模拟[J]. 水动力学研究与进展, 23(6): 681-686.
	ZHANG SHUJU, WU CHUIJIE, 2008. Numerical Simulation of the Interactions Between two three-dimensional deformable bubbles[J]. Chinese Journal of Hydrodynamics, 23(6): 681-686 (in Chinese with English abstract).
[5]	张书文, 2008. 波浪破碎气体的卷入过程及相关统计量的估计[J]. 物理学报, 57(5): 3287-3292.
	ZHANG SHUWEN, 2008. Air bubble entrainment by breaking waves and estimation of the related statistical quantities[J]. Acta Physica Sinica, 57(5): 3287-3292 (in Chinese with English abstract).
[6]	BESANT W H, 1859. Hydrostatics and hydrodynamics[M]. London: Cambridge University press.
[7]	BLENKINSOPP C E, CHAPLIN J R, 2007. Void fraction measurements in breaking waves[J]. Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences, 463(2088): 3151-3170.
[8]	BLENKINSOPP C E, CHAPLIN J R, 2010. Bubble size measurements in breaking waves using optical fiber phase detection probes[J]. IEEE Journal of Oceanic Engineering, 35(2): 388-401.
[9]	BLENKINSOPP C E, CHAPLIN J R, 2011. Void fraction measurements and scale effects in breaking waves in freshwater and seawater[J]. Coastal Engineering, 2011, 58(5): 417-428.
[10]	DEIKE L, LENAIN L, MELVILLE W K, 2017. Air entrainment by breaking waves[J]. Geophysical Research Letters, 44(8): 3779-3787.
[11]	DEIKE L, MELVILLE W K, POPINET S, 2016. Air entrainment and bubble statistics in breaking waves[J]. Journal of Fluid Mechanics, 801: 91-129.
[12]	HOQUE A, AOKI S I, 2005. Distributions of void fraction under breaking waves in the surf zone[J]. Ocean Engineering, 32(14-15): 1829-1840.
[13]	HOQUE A, 2008. Studies of water level rise by entrained air in the surf zone[J]. Experimental Thermal and Fluid Science, 32(4): 973-979.
[14]	HOQUE A, AOKI S I, 2014. Wave-energy dissipation and wave setup caused by entrained air bubbles in plunging wave breaking[J]. Journal of Waterway, Port, Coastal, and Ocean Engineering, 140(5): 172-182.
[15]	INAMURO T, OGATA T, OGINO F, 2004. Numerical simulation of bubble flows by the lattice Boltzmann method[J]. Future Generation Computer Systems, 20(6): 959-964.
[16]	JACOBSEN N G, FUHRMAN D R, FREDSØE J, 2012. A wave generation toolbox for the open-source CFD library: OpenFoam®[J]. International Journal for Numerical Methods in Fluids, 70(9): 1073-1088.
[17]	LIM H J, CHANG KUANGAN, HUANG ZHICHENG, et al, 2015. Experimental study on plunging breaking waves in deep water[J]. Journal of Geophysical Research: Oceans, 120(3): 2007-2049.
[18]	WELLER H G, 2002. Derivation modelling and solution of the conditionally averaged two-phase flow equations[R]., Technical Report No. TR/HGW/02, London: Nabla Ltd.
[19]	WILLMOTT C J, 1981. On the validation of models[J]. Physical Geography, 2(2): 184-194.
[20]	ZHANG LIXI, HAN FANGCHAO, GAO SHIYUAN, 2011. Numerical simulations and comparisons of air bubbling process through single hole[M]//JIN D, LIN S. Advances in computer science, intelligent system and environment. Berlin Heidelberg: Springer: 371-377.

Air entrainment and bubble movement processes in breaking waves

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