Numerical investigation on the water entry of a 3D circular cylinder based on a GPU-accelerated SPH method

Zhang, Hua‐Shan; Zhang, Zhilang; He, Fulian; Liu, Moubin

doi:10.1016/j.euromechflu.2022.01.007

Cited by 39 publications

(6 citation statements)

References 44 publications

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“…Initially, both the wedge and the semi‐cylinder are placed on the centerline, just above the free surface. Similar water entry cases were reported by experiments and simulations, 6,64–68 where fluid–structure interaction is considered. However, the FSI analysis is out of the scope of this article, and will be further discussed in future works.…”

Section: Numerical Examplessupporting

confidence: 75%

“…When the rigid bodies impact the free surface, some free surface nodes are defined as slip boundary nodes by the prediction algorithm. As the entry develops, the fluid domain under the incompressible constraint is driven by the rigid bodies and moves toward left and right, producing splashes, producing reasonable fluid movement that is similar to References 64, 67. The pressure contours are smooth from the moving rigid bodies to the fixed water tank boundary, showing good stabilization properties of the proposed SNS‐PFEM‐FIC algorithm.…”

Section: Numerical Examplesmentioning

confidence: 86%

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A novel stabilized nodal integration formulation using particle finite element method for incompressible flow analysis

Yu,

Jin,

Yin

et al. 2024

Numerical Methods in Fluids

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In simulations using the particle finite element method (PFEM) with node‐based strain smoothing technique (NS‐PFEM) to simulate the incompressible flow, spatial and temporal instabilities have been identified as crucial problems. Accordingly, this study presents a stabilized NS‐PFEM‐FIC formulation to simulate an incompressible fluid with free‐surface flow. In the proposed approach, (1) stabilization is achieved by implementing the gradient strain field in place of the constant strain field over the smoothing domains, handling spatial and temporal instabilities in direct nodal integration; (2) the finite increment calculus (FIC) stabilization terms are added using nodal integration, and a three‐step fractional step method is adopted to update pressures and velocities; and (3) a novel slip boundary with the predictor–corrector algorithm is developed to deal with the interaction between the free‐surface flow with rigid walls, avoiding the pressure concentration induced by standard no‐slip condition. The proposed stabilized NS‐PFEM‐FIC is validated via several classical numerical cases (hydrostatic test, water jet impinging, water dam break, and water dam break on a rigid obstacle). Comparisons of all simulations to the experimental results and other numerical solutions reveal good agreement, demonstrating the strong ability of the proposed stabilized NS‐PFEM‐FIC to solve incompressible free‐surface flow with high accuracy and promising application prospects.

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Section: Numerical Examplessupporting

confidence: 75%

Section: Numerical Examplesmentioning

confidence: 86%

A novel stabilized nodal integration formulation using particle finite element method for incompressible flow analysis

Yu,

Jin,

Yin

et al. 2024

Numerical Methods in Fluids

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“…It has some advantages, such as easy implementation, high parallelism, and effective treatment of complicated geometries. As for the mesh-free particle methods, e.g., the smooth particle hydrodynamics (SPH) [12][13][14][15][16] and the moving particle semi-implicit/simulation (MPS) method [17][18][19], the strong capability in solving fluid flows with free surfaces and large displacements has been well documented. However, this approach cannot simulate structural deformation and stress distribution well.…”

Section: Introductionmentioning

confidence: 99%

A Multi-Resolution MPS/FEM Coupling Method for Three-Dimensional Fluid–Structure Interaction Analysis

Zheng

Zhou

Mitsume

et al. 2023

JMSE

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This work aims to propose an efficient MPS/FEM coupling method for the simulation of fluid–structure interaction (FSI), where the MPS and FEM are respectively employed to account for fluid flows and structural deformation. The main idea of our method is to develop a multi-scale multi-resolution MPS method for efficient fluid simulations in the context of MPS/FEM coupling. In the developed multi-scale MPS method, the fluid domain is discretized into particles of different resolutions before calculation, where particles close to the interest domain will be discretized into high resolution, while the rest are discretized into low resolution. A large particle interacting with small particles is divided into several small particles virtually, and weight functions are redefined to maintain the simulation stability. A bucket-sort-based algorithm is developed for the fast search of multi-resolution neighboring particles. The capacity of a newly proposed ghost cell boundary model is further enhanced, so as to accurately treat wall boundary problems with particles of different resolutions. On this basis, the multi-resolution MPS method is coupled with the FEM for FSI simulations. Finally, several numerical examples are conducted to demonstrate the accuracy and efficiency of the development method.

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“…e finite particle method (FPM) proposed by Liu et al [27,28] is a modified SPH scheme with better accuracy [28]. In recent years, the SPH and FPM scheme have been applied to solving different coastal engineering problems, such as wave breaking and overtopping [29][30][31][32][33][34][35], fluid-structure interactions [36][37][38][39][40], and porous media [41][42][43][44][45][46][47].…”

Section: Introductionmentioning

confidence: 99%

Numerical Study of Wave Dynamics over Island Reefs Based on Smoothed Particle Hydrodynamics Method

Wang

Sun

et al. 2022

Mathematical Problems in Engineering

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Coastal areas are suffering from an increasing number of hazards like storm surge or flooding. Luckily, reefs can reduce the risk because of their particular wave dynamic characteristics. In this study, a numerical wave flume is established to simulate the topography of fringing reefs around islands. The smoothed particle hydrodynamics- (SPH-) finite particle method (FPM) scheme is used to deal with Navier–Stokes equations, and the boundary repulsion method is used to deal with the solid wall boundary. The wave propagating and breaking processes over island reefs under regular wave incidence are simulated. The results are compared with the experimental results in the literature, showing that the numerical model can simulate the wave propagating process on the island reef terrain very well. The wave propagation over the island reef terrain experienced the processes of shoaling, breaking, reforming, and so on, and most waves break in the plunging form. The processes of wave-induced setup accompanied with wave breaking before and after the reef ridge were also simulated.

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Numerical investigation on the water entry of a 3D circular cylinder based on a GPU-accelerated SPH method

Cited by 39 publications

References 44 publications

A novel stabilized nodal integration formulation using particle finite element method for incompressible flow analysis

A novel stabilized nodal integration formulation using particle finite element method for incompressible flow analysis

A Multi-Resolution MPS/FEM Coupling Method for Three-Dimensional Fluid–Structure Interaction Analysis

Numerical Study of Wave Dynamics over Island Reefs Based on Smoothed Particle Hydrodynamics Method

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