Study on the Effect of Porosity on the Reflection Coefficient and Wave Pressure on the Partially Perforated Plates

Abstract:

2D numerical wave flume is established based on the VOF method and k- model to numerically simulate the interaction of wave with perforated plates. The internal source generation of wave is applied in making wave area whose end is placed the sponge layer to absorb the reflection of wave. The numerical results of reflection coefficient before perforated plate are compared with the experimental results of reference (Liu, 2008) to verify the numerical method. By changing porosity, the effect of porosity on reflection coefficient can be analyzed. Moreover, the pressure difference between the outer and inner of perforated plate was studied, and then the mutual influence of porosity on the pressure difference is obtained according to the substantive numerical results.

• Periodical: Advanced Materials Research (Volume 680)
• Pages: 177-182
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.680.177
• Online since: April 2013
• Authors: Xue Feng Chen, Mei Zhang
• Keywords: Perforated Plate, Pressure Difference, Reflection Coefficient, VOF Method

References

[1] Tanimoto K，Yoshimoto Y. Theoretical and experimental Study of reflection coefficient for wave dissipating caisson with a permeable front wall. Report of the Port and Harbor Research Institute, Japan, 1982, 21(3): 846-850.

[2] Tabet-Aoul, E.H., Lambert, E., Tentative new formula for maximum horizontal wave pressures acting on perforated caisson [J]. Journal of Waterway, Port, Coastal and Ocean Engineering, 2003, 129(1): 34-40.

DOI: 10.1061/(asce)0733-950x(2003)129:1(34)

[3] Dai Guanying. Reflection and transmission Performances of vertical Perforated structure under wave action. Hydro-Science and Engineering, 1993, 3: 291-300. (in Chinese).

[4] Chen Xuefeng, LI Yucheng, WANG Yongxue, DONG Guohai and BAI Xue, Numerical simulation of wave interaction with perforated caisson breakwaters, China Ocean Engineering, Vol. 17, No. 1, pp.33-43, (2003).

[5] Yongxue Wang, Xiaozhong Ren，Ping Dong, Guoyu Wang. Three-dimensional numerical simulation of wave interaction with perforated quasi-ellipse caisson. Water Science and Engineering, 2011, 4(1): 46-60. (in Chinese).

[6] Zhenhua Huang, Yucheng Li, Yong Liu. Hydraulic performance and wave loadings of perforated/slotted coastal structures: A review . Ocean Engineering, 2011, 1-24.

DOI: 10.1016/j.oceaneng.2011.03.002

[7] Yong Liu, Yucheng Li, Bin Teng, Hao Wu．Theoretical study of diagonal wave forces acting on partially perforated caisson breakwater with transverse walls [J]. Acta Oceanologica Sinica, 2008, 30(2): 137-146.

[8] Rodi, W., 1980. Turbulence models and their application in hydraulics – A state of the art review. Book Publication of International Association for Hydraulic Research, Delft, Netherlands.

[9] Hirt, C,W. and Nichols B.D. Volume of Fluid(VOF)method for the dynamics of Free Boundaries.J. Compt. Phys., 1981, Vol. 39, pp.201-225.

DOI: 10.1016/0021-9991(81)90145-5

[10] Chen Xuefeng, Li Yucheng, Teng Bin, Numerical calculation and simplified methods on the wave force acting on perforated caissons with top cover, Coastal Engineering, Vol. 54, pp.67-75, (2007).

DOI: 10.1016/j.coastaleng.2006.08.002