Numerical Simulation Study on the Air Amount Scale of Air Bubbles Breakwater

Abstract:

The numerical simulation of air bubbles breakwater was presented in this paper. The two-phase fluid of water and air was assumed as a variable density fluid. The numerical models were developed by FLUENT in order to explore the air amount scale in the system of air bubbles breakwater . The continuity equation, the Reynolds average equations and the standard k-e equations were selected as the governing equations and the interface of water and air was traced by the VOF method, the additional mass source was added to the continuity equation by The Macro of UDF. The relationship between the air amount scale and the length scale was obtained, which illuminated that the air amount scale of air bubbles breakwater agrees to the gravity similarity law. Furthermore, the effect of air amount and the incident wave periods on the performance of the air bubbles breakwater was analyzed.

• Periodical: Applied Mechanics and Materials (Volumes 170-173)
• Pages: 2298-2302
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.170-173.2298
• Online since: May 2012
• Authors: Cheng Xing Zhang, Lu Bai
• Keywords: Air Amount Scale, Air Bubbles Breakwater, Numerical Simulation, Transmission Coefficient

References

[1] Brasher, P. Compressed air magazine[J]. vol.20(1915), P.752

[2] Bulson, P. S., The theory and design of bubble breakwater[C]. Proceeding of 11th conference on coastal Engineering, (1968), P.995

[3] Yang Guang-xu, Air bubbles curtain design and calculation for shock prevention[J]. Blasting, No.2(1990), P.48

[4] Liang Bin, Air bubble gradation of high velocity aerated flow[J]. Hydro-Science and Engineering, No.2 (2002), P.66

[5] Wang Guo-yu, Experimental study on the performance of air bubbles breakwater[J]. Shipbuilding of China, vol.45 special(2004), P.103

[6] Wang Guo-yu, Investigation on the Structure Type and Performance of the Special Breakwaters[D]. Dalian: Dalian University of Technology, (2005)

[7] Han Zhan-zhong, Fluids engineering simulation examples and applications of Fluent[M]. Beijing: Beijing Institute of Technology Press, (2004)

[8] Wang Rui-jin, The technical bases and application examples of Fluent[M]. Beijing: Tsinghua University Press, (2007)

[9] Li Ling, The Numerical Simulation of Interaction of Water Waves and Floating Structures in a Viscous Fluid[D]. Shanghai: Shanghai Jiaotong University, (2007)

[10] Li Ling, The numerical wave flume of the viscous fluid based on the momentum source method[J]. Journal of hydrodynamics. A, 22(1)(2007), P.76