SPH-DEM model for free-surface flows containing solids applied to river ice jams. Issue 1 (2nd January 2016)

• Record Type: Journal Article
• Authors: Robb, Daniel M.; Gaskin, Susan J.; Marongiu, Jean-Christophe
• Is Part Of: Journal of hydraulic research. Volume 54:Issue 1(2016)
• Page Start: 27
• Page End: 40
• Publication Date: 2016-01-02
• Subjects: Discrete element method -- ice streams -- open channel flow -- river ice jams -- smoothed particle hydrodynamics models; Hydraulics -- Research -- Periodicals; Hydraulic engineering -- Periodicals; Hydraulic engineering; Electronic journals; Periodicals; 621.2
• DOI: 10.1080/00221686.2015.1131203
• Languages: English
• ISSNs: 0022-1686

Abstract

ABSTRACT: A meshless method is used to simulate free-surface fluid flows containing solid particles, motivated by the need to simulate river ice dynamics problems. A smoothed particle hydrodynamics model (SPH), with an arbitrary Lagrangian–Eulerian formulation for the fluid phase, is two-way coupled with the discrete element method (DEM) for the solid phase. Validation test cases include a bouncing sphere on a level surface, a collapse of a granular column, wedge entry into still water and solids of different densities falling into still water. The computed results using the SPH-DEM model agree quantitatively with the expected behaviour in the test cases. Numerical convergence is demonstrated for the wedge entry validation case. The SPH-DEM model is then used to simulate the stability of floating ice blocks approaching a stationary cover and ice accumulation upstream of an obstruction. The results show promise to serve as a useful quantitative engineering tool.