SPH-DEM modeling of the hydraulic stability of 2D blocks on a slope

The numerical simulations of wave interactions with armor blocks on rubble mound breakwaters will enable a stronger understanding of breakwater failure and therefore increased malfunction prevention. This paper presents a two-dimensional (2D) SPH-DEM model that simulates the wave-structure interaction on a slope and predicts the hydraulic stability of the 2D structure. A particle method combined with a Riemann solver evaluates the hydrodynamic loads on the discrete blocks, while a multi-sphere discrete element method describes the movement of the solids from the wave attacks. An interfacial force balance condition enables coupling between the fluids and the solids. A series of experimental tests were conducted to validate the SPH model. The simulation of water entry of the wedge was compared with previous experiments. The wave interactions with massive cross-shaped blocks on a slope were also simulated in 2D. Numerical results are presented showing the details of large deformations of the free surface on the slope, the velocity field and the hydraulic pressures on the armor units, and the nature of the changes in position of the blocks near the toe of the slope during the wave attack. These results facilitate an improved understanding of the interaction between waves and breakwaters.

• Record URL:
  • https://doi.org/10.1061/(ASCE)WW.1943-5460.0000247
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/0733950X
• Supplemental Notes:
  • Copyright 2013 by the American Society of Civil Engineers
• Authors:
  • Ren, Bing
  • Jin, Zhao
  • Gao, Rui
  • Wang, Yong-xue
  • Xu, Zhi-lin
• Publication Date: 2014-11

Language

• English

Media Info

• Media Type: Digital/other
• Features: References;
• Pagination: 0000247
• Serial:
  • Journal of Waterway, Port, Coastal, and Ocean Engineering
  • Volume: 140
  • Issue Number: 6
  • Publisher: American Society of Civil Engineers
  • ISSN: 0733-950X
  • EISSN: 1943-5460
  • Serial URL: http://ascelibrary.org/journal/jwped5

Subject/Index Terms

• TRT Terms: Computer models; Concrete blocks; Discrete element method; Hydraulics; Hydrodynamics; Rubble mound breakwaters; Wave motion
• Subject Areas: Hydraulics and Hydrology; Marine Transportation; Planning and Forecasting; I72: Traffic and Transport Planning;

Filing Info

• Accession Number: 01501608
• Record Type: Publication
• Files: TRIS, ASCE
• Created Date: Dec 23 2013 7:52AM