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A novel two-way method for dynamically coupling a hydrodynamic model with a discrete element model (DEM)

Lookup NU author(s): Samantha Mahaffey, Professor Mohamed Rouainia

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Abstract

The effect of floating objects has so far been little considered for hazard risk assessment and structure design, despite being an important factor causing structural damage in flood-prone and coastal areas. In this work, a novel two-way method is proposed to fully couple a shock-capturing hydrodynamic model with a discrete element model (DEM) for simulation of complex debris-enriched flow hydrodynamics. After being validated against an idealized analytical test, the new coupled model is used to reproduce flume experiments of floating debris driven by dam-break waves. The numerical results agree satisfactorily with the experimental measurements, demonstrating the model’s capability and efficiency in simulating complex fluid-debris interactions induced by violent shallow flows.

Publication metadata

Author(s): Xiong Y, Liang Q, Mahaffey S, Rouainia M, Wang G

Publication type: Article

Publication status: Published

Journal: Journal of Hydrodynamics

Year: 2018

Volume: 30

Issue: 5

Pages: 966-969

Print publication date: 01/10/2018

Online publication date: 09/08/2018

Acceptance date: 02/08/2018

ISSN (print): 1001-6058

ISSN (electronic): 1878-0342

Publisher: Springer

URL: https://doi.org/10.1007/s42241-018-0081-y

DOI: 10.1007/s42241-018-0081-y

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