Simulating three dimensional wave run-up over breakwaters covered by antifer units
2
조회
0
다운로드
1
인용
0
참고문헌
키워드
초록
The paper presents the numerical analysis of wave run-up over rubble-mound breakwaters covered by antifer units using a technique integrating Computer-Aided Design (CAD) and Computational Fluid Dynamics (CFD) software. Direct application of Navier-Stokes equations within armour blocks, is used to provide a more reliable approach to simulate wave run-up over breakwaters. A well-tested Reynolds-averaged Navier-Stokes (RANS) Volume of Fluid (VOF) code (Flow-3D) was adopted for CFD computations. The computed results were compared with experimental data to check the validity of the model. Numerical results showed that the direct three dimensional (3D) simulation method can deliver accurate results for wave run-up over rubble mound breakwaters. The results showed that the placement pattern of antifer units had a great impact on values of wave run-up so that by changing the placement pattern from regular to double pyramid can reduce the wave run-up by approximately 30%. Analysis was done to investigate the influences of surface roughness, energy dissipation in the pores of the armour layer and reduced wave run-up due to inflow into the armour and stone layer.
Abstract
The paper presents the numerical analysis of wave run-up over rubble-mound breakwaters covered by antifer units using a technique integrating Computer-Aided Design (CAD) and Computational Fluid Dynamics (CFD) software. Direct application of Navier-Stokes equations within armour blocks, is used to provide a more reliable approach to simulate wave run-up over breakwaters. A well-tested Reynolds-averaged Navier-Stokes (RANS) Volume of Fluid (VOF) code (Flow-3D) was adopted for CFD computations. The computed results were compared with experimental data to check the validity of the model. Numerical results showed that the direct three dimensional (3D) simulation method can deliver accurate results for wave run-up over rubble mound breakwaters. The results showed that the placement pattern of antifer units had a great impact on values of wave run-up so that by changing the placement pattern from regular to double pyramid can reduce the wave run-up by approximately 30%. Analysis was done to investigate the influences of surface roughness, energy dissipation in the pores of the armour layer and reduced wave run-up due to inflow into the armour and stone layer.
참고문헌 (14)
- Altomare, C., "Improved accuracy in modeling armoured breakwaters with SPH", 7th SPHERIC Workshop, pp.395~402 (2012)
- Bakhtyar, R., "Air-water two-phase flow modeling of tur-bulent surf and swash zone wave motions", Advances in Water Resources, 33(12), pp.1560~1574 (2010)
- Cavallaro, L., "Rubble mound breakwater overtopping estimation of the reliability of a 3D numerical simulation", 33rd International Conference on Coastal Engineering, pp.1~9 (2012)
- Dentale, F., "Wave run up and reflection on tridimensional virtual breakwater", Journal Hydrogeol Hydrol Engineering, 1(1), pp.102~110 (2012)
- Dentale, F., "Rubble mound breakwater: run-up, reflection and over-topping by numerical 3D simulation", ICE Conference, pp.120~130 (2013)
- Dentale, F., "Innovative numerical simulation to study the fluid motion within rubble mound breakwaters and the armour stability", 17th Armourstone user meeting (2009)
- Frens, A. B., "The impact of placement method on Antifer-bloack stability", pp.2007
- Hsu, T., "Experimental and numerical studies on wave propagation over coarse grained sloping beach", Coastal Engineering Proceedings, 1(32), pp.681~ (2011)
- Latham, J. P., "New modelling and analysis methods for concrete armour unit systems using FEMDEM", Coastal Engineering, 77, pp.151~166 (2013)
- Latham, J. P., "Modelling of massive particulates for breakwater engineering using coupled FEMDEM and CFD", Particuology, 6, pp.572~583 (2008)
- Najafi-Jilani, A., "Laboratory investigations on wave run-up and transmission over breakwaters covered by antifer units", Scientia Iranica, 17(6), pp.457~470 (2010)
- Van Der Meer, J., "Applications of a neural network to predict wave overtopping at coastal structures", 5th International Conference on Coastlines, Structures and Breakwaters, pp.259~268 (2005)
- Xiang, J., "Coupled fluidity.Y3D technology and simulation tools for numerical breakwater modeling", Coastal Engineering Proceedings (2012)
- Yagci, O., "Alternative placement technique for Antifer blocks used on breakwaters", Ocean Engi-neering, 30(11), pp.1433~1451 (2003)