Fluid–rigid-body interaction simulations and validations using a coupled stabilized ISPH–DEM incorporated with the energy-tracking impulse method for multiple-body contacts

Asai, Mitsuteru; Li, Yang; Chandra, Bodhinanda; Takase, Shinsuke

doi:10.1016/j.cma.2021.113681

Cited by 35 publications

(11 citation statements)

References 36 publications

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“…In the DEM and SPH coupled simulations, the time increment is governed by the DEM stability condition in general. To overcome this difficulty, Asai et al [44] successfully apply the ETI: Energy…”

Section: Tracking Of the Caisson Block Motionmentioning

confidence: 99%

Seepage failure prediction of breakwater using an unresolved ISPH-DEM coupling method incoprporated with Terzaghi's critical hydraulic gradient

Tsuji

Asai²,

Kasama

2022

Preprint

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This study develops a new numerical simulation model for rubble mound failure prediction caused by piping destruction under seepage flows. The piping has been pointed out as a significant cause of breakwater failure during tsunamis. Once boiling and heaving occur on the mound surface, the piping suddenly propagates in the opposite direction of seepage flow. For the seepage failure prediction, a coupled fluid-soil-structure simulator is developed by combining the ISPH for fluid and the DEM for rubble mounds and caisson blocks. The ISPH, a Lagrangian particle method for incompressible fluids, can simulate seepage and violent flows such as tsunamis. The DEM has been applied for discrete particle and rigid body simulations that include discontinuous deformation as in the rubble mounds failure and large displacement of the caisson block. ISPH-DEM coupling simulations have already been proposed as a technique for multi-phase flows. Still, the technique cannot reproduce the sudden onset of piping from a stable mound. Two simple assumptions are applied to reduce the numerical cost for the fluid-soil-structure simulators of a breakwater structure composed of rubble mound and the caisson block. Firstly, each rubble is modeled as an idealized spherical DEM particle with the mean diameter of rubble. The ISPH particle size is assumed to be the same size as the DEM particle. Under these assumptions, the unresolved coupling model between rubble mound particle and fluid, which obtains the interaction through empirical drag force, should be applied. Whereas the interaction between the fluid and the caisson block is fully resolved with the spatial resolution with the ISPH and DEM particle size. Our new contribution in this paper is how to model the interaction as an unresolved coupling between seepage flow simulated by ISPH and rubble mound particle modeled with DEM. Our original seepage failure experiment is simulated using the proposed ISPH-DEM coupling simulator. We recognized the conventional drag force models as the unresolved coupling model are insufficient to initiate the boiling and piping observed in the experiment. It may be due in one part to excessive averaging of flow velocities caused under unresolved coupling. Therefore, Terzaghi's critical hydraulic gradient is introduced to initiate the boiling and heaving. Unstable DEM particles, judged by Terzaghi's critical hydraulic gradient, gradually lose their mass to represent unresolved suspended fine rubble mound particles. Our models qualitatively reproduce the sand boiling and backward erosion in the opposite direction of the seepage flow, as shown in the experiment.

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Section: Tracking Of the Caisson Block Motionmentioning

confidence: 99%

Seepage failure prediction of breakwater using an unresolved ISPH-DEM coupling method incoprporated with Terzaghi's critical hydraulic gradient

Tsuji

Asai²,

Kasama

2022

Preprint

Self Cite

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“…An extension to a macroscale approach, i.e., a normal distance-based contact interaction [12,52,53], is possible in a straightforward manner. In addition, also a momentum-based energy tracking method [54] was recently applied for collision modeling of fully resolved rigid bodies [55,56].…”

Section: Remark 18mentioning

confidence: 99%

An SPH framework for fluid–solid and contact interaction problems including thermo-mechanical coupling and reversible phase transitions

Fuchs

Meier

Wall

et al. 2021

Adv. Model. and Simul. in Eng. Sci.

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The present work proposes an approach for fluid–solid and contact interaction problems including thermo-mechanical coupling and reversible phase transitions. The solid field is assumed to consist of several arbitrarily-shaped, undeformable but mobile rigid bodies, that are evolved in time individually and allowed to get into mechanical contact with each other. The fluid field generally consists of multiple liquid or gas phases. All fields are spatially discretized using the method of smoothed particle hydrodynamics (SPH). This approach is especially suitable in the context of continually changing interface topologies and dynamic phase transitions without the need for additional methodological and computational effort for interface tracking as compared to mesh- or grid-based methods. Proposing a concept for the parallelization of the computational framework, in particular concerning a computationally efficient evaluation of rigid body motion, is an essential part of this work. Finally, the accuracy and robustness of the proposed framework is demonstrated by several numerical examples in two and three dimensions, involving multiple rigid bodies, two-phase flow, and reversible phase transitions, with a focus on two potential application scenarios in the fields of engineering and biomechanics: powder bed fusion additive manufacturing (PBFAM) and disintegration of food boluses in the human stomach. The efficiency of the parallel computational framework is demonstrated by a strong scaling analysis.

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“…出多分辨率 ISPH-SPH 耦合方法模拟海洋工程中流固耦合问题, 在保证一定计算精度的情况下可提高计算效率. Asai 等 [27] 基于 ISPH-DEM 耦合方法提出模拟流体和刚体的接触算法, 可有效模拟自由流体冲击多个刚体的问题. Khayyer 等 [28]…”

Section: -3unclassified

Dynamic modeling and simulation of fluid-filled flexiblemultibody system based on ISPH-TLSPH method

Kong¹,

Chen²,

Tian³

2021

Sci. Sin.-Phys. Mech. Astron.

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Fluid–rigid-body interaction simulations and validations using a coupled stabilized ISPH–DEM incorporated with the energy-tracking impulse method for multiple-body contacts

Cited by 35 publications

References 36 publications

Seepage failure prediction of breakwater using an unresolved ISPH-DEM coupling method incoprporated with Terzaghi's critical hydraulic gradient

Seepage failure prediction of breakwater using an unresolved ISPH-DEM coupling method incoprporated with Terzaghi's critical hydraulic gradient

An SPH framework for fluid–solid and contact interaction problems including thermo-mechanical coupling and reversible phase transitions

Dynamic modeling and simulation of fluid-filled flexiblemultibody system based on ISPH-TLSPH method

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