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Article

A WCSPH Particle Shifting Strategy for Simulating Violent Free Surface Flows

Department of Civil, Geological and Mining Engineering, Polytechnique Montréal, 2900 Boulevard Edouard-Montpetit, Montréal, QC H3T 1J4, Canada
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Water 2020, 12(11), 3189; https://doi.org/10.3390/w12113189
Received: 5 October 2020 / Revised: 9 November 2020 / Accepted: 10 November 2020 / Published: 14 November 2020
(This article belongs to the Special Issue Meshless Methods for Water Dynamics and Complex Flows)
In this work, we develop an enhanced particle shifting strategy in the framework of weakly compressible δ+-SPH method. This technique can be considered as an extension of the so-called improved particle shifting technology (IPST) proposed by Wang et al. (2019). We introduce a new parameter named ϕ to the particle shifting formulation, on the one hand to reduce the effect of truncated kernel support on the formulation near the free surface region, on the other hand, to deal with the problem of poor estimation of free surface particles. We define a simple criterion based on the estimation of particle concentration to limit the error’s accumulation in time caused by the shifting in order to achieve a long time violent free surface flows simulation. We propose also an efficient and simple concept for free surface particles detection. A validation of accuracy, stability and consistency of the presented model was shown via several challenging benchmarks. View Full-Text
Keywords: smoothed particle hydrodynamics; particle shifting technique; violent flows; δ+-SPH method; tensile instability smoothed particle hydrodynamics; particle shifting technique; violent flows; δ+-SPH method; tensile instability
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MDPI and ACS Style

Krimi, A.; Jandaghian, M.; Shakibaeinia, A. A WCSPH Particle Shifting Strategy for Simulating Violent Free Surface Flows. Water 2020, 12, 3189. https://doi.org/10.3390/w12113189

AMA Style

Krimi A, Jandaghian M, Shakibaeinia A. A WCSPH Particle Shifting Strategy for Simulating Violent Free Surface Flows. Water. 2020; 12(11):3189. https://doi.org/10.3390/w12113189

Chicago/Turabian Style

Krimi, Abdelkader; Jandaghian, Mojtaba; Shakibaeinia, Ahmad. 2020. "A WCSPH Particle Shifting Strategy for Simulating Violent Free Surface Flows" Water 12, no. 11: 3189. https://doi.org/10.3390/w12113189

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