Article
Engineering, Multidisciplinary
Daniel S. Morikawa, Mitsuteru Asai
Summary: This work introduces a two-way coupling technique between SPH method and EISPH technique for simulating fluid-structure interaction problems. The paper discusses the solid and fluid parts, coupling approach, stability methods, and validation through numerical tests and experimental data comparisons, highlighting the significance and details of the proposed methodology.
COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING
(2021)
Article
Computer Science, Interdisciplinary Applications
Yicong Lan, Yapei Zhang, Wenxi Tian, G. H. Su, Suizheng Qiu
Summary: This paper presents an extended ISPH method with a solid-liquid phase change model, which is capable of simulating free-surface flow coupled with solid-liquid phase change. The improved method includes a novel implicit viscosity solver, accurate wall boundary conditions, an enhanced implicit viscosity Laplacian operator, a dynamic solid boundary criterion, and various heat transfer and viscosity models. The simulation results demonstrate the effectiveness and advantages of the proposed ISPH method, providing potential engineering applications.
JOURNAL OF COMPUTATIONAL PHYSICS
(2023)
Correction
Engineering, Mechanical
Fei Xu, Jiayi Wang, Yang Yang, Lu Wang, Zhen Dai, Ruiqi Han
Summary: This article discusses the methodology and application of smoothed particle hydrodynamics in fluid, solid, and biomechanics. The authors have decided to make the article an Open Access publication and distribute it under a Creative Commons Attribution 4.0 International License.
ACTA MECHANICA SINICA
(2023)
Article
Engineering, Multidisciplinary
Wei Hu, Milad Rakhsha, Lijing Yang, Ken Kamrin, Dan Negrut
Summary: A continuum approach for treating discrete granular flows is proposed and validated through experiments, tests, and numerical simulations. The implementation of this approach leverages GPU computing and is publicly available on GitHub.
COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING
(2021)
Article
Engineering, Marine
Qiuzu Yang, Fei Xu, Yang Yang, Zhen Dai, Jiayi Wang
Summary: In this paper, a GPU implementation of adaptive particle refinement (APR) in the SPH framework is used to simulate multi-phase flow and fluid-structure coupling. The authors present SPH models for multi-phase flow and fluid-structure coupling based on the Riemann solver and use a local particle refinement technique to split particles. They propose a particle shifting technique to regularize the particle distribution and use a dynamic resource management algorithm for efficient GPU-accelerated APR. Precision analysis shows the effect of fine and coarse particle smooth length ratio on numerical accuracy. Tests demonstrate that the proposed GPU-accelerated APR is accurate and stable with low computational cost and comparable precision compared to uniform particles.
Article
Computer Science, Interdisciplinary Applications
Xiangda Cui, Wagdi G. Habashi
Summary: In this study, a freezing model is incorporated into a multiphase smoothed particle hydrodynamics (SPH) formulation to enrich the calculation method of supercooled large droplets (SLD) impingement and solidification. The model is validated against experimental data and applied to test cases with different supercooling degrees and impact speeds to investigate their effects on residual ice layers. This research provides a comprehensive toolset for parametric studies of single SLD impingement and solidification and paves the way for macroscopic models in in-flight icing CFD codes.
COMPUTERS & FLUIDS
(2023)
Article
Thermodynamics
Zhongyi Liu, Siqi Li, Xiaolong Pan, Haisheng Fang
Summary: The paper presents a numerical model based on the SPH method to predict the outcome of nanofluid droplets in detail. The model takes into consideration the surface tension of droplets and the properties of nanofluids. The results show that the SPH model is capable of predicting the evolution of droplet surface and thermal distribution.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2022)
Article
Engineering, Marine
Ting Long, Can Huang, Dean Hu, Moubin Liu
Summary: The paper proposes a coupling method of ES-FEM and SPH for solving FSI problems, with correction algorithms integrated into the SPH method to improve computational stability and accuracy. The virtual particle coupling scheme was used for implementing the coupling of ES-FEM and SPH, which is found to be effective in simulating FSI problems.
Article
Computer Science, Interdisciplinary Applications
Yalan Zhang, Xiaojuan Ban, Yu Guo, Mohammad S. Obaidat
Summary: This paper proposes a new system for simulating collisions and coupling between non-Newtonian fluids and solids to address the unreasonable boundary conditions in existing SPH non-Newtonian fluid simulations. By sampling solids as boundary particles and optimizing the calculation formula of interaction forces, fluid particles interact directly with the boundary in an iterative manner, improving the physical accuracy of the simulation.
SIMULATION MODELLING PRACTICE AND THEORY
(2021)
Article
Environmental Sciences
Jianwei Zhang, Bingpeng Wang, Qi Jiang, Ge Hou, Zhirui Li, Hongze Liu
Summary: This paper investigates the fluid-solid interaction problem involving structural movement and deformation. It proposes an SPH interaction method to establish a numerical fluid-solid model. The method demonstrates good accuracy by comparing with experimental results.
Article
Mechanics
Kshitiz Kumar Subedi, Song-Charng Kong
Summary: In this study, the impact of molten droplets on a cold substrate in thermal spray conditions was simulated using a particle-based approach. The validation of the simulation results was conducted using experimental data for different materials. It was found that the cooling rates were influenced by the impingement velocity and the thermal diffusivity of the substrate.
INTERNATIONAL JOURNAL OF MULTIPHASE FLOW
(2023)
Article
Mechanics
K. C. Ng, Hailong Chen
Summary: This paper presents an improved failure model for brittle fracture simulation using the mesh-less Lattice Particle Method (LPM). By utilizing the Remove Bond (RB) approach, a new formulation is developed to predict the mode-I Stress Intensity Factor (SIF) near the crack tip more accurately than the conventional Remove Particle (RP) approach. Benchmark test cases are conducted to verify the numerical accuracy and convergence of the proposed method. Furthermore, the LPM method is combined with the Smoothed Particle Hydrodynamics (SPH) method to study Fluid Structure Interaction (FSI) problems involving solid fracture and free surface. The coupled SPH-LPM method is implemented in the open-source code, DualSPHysics, and can effectively model fracture phenomena caused by natural hazards.
ENGINEERING FRACTURE MECHANICS
(2023)
Article
Engineering, Chemical
Ting Qiao, Lu Liu, Shunying Ji
Summary: This study develops a coupling method based on superquadric elements to describe the interaction between non-spherical solid particles and fluids. The discrete element method (DEM) and smoothed particle hydrodynamics (SPH) are used to simulate granular materials and fluids, respectively. The coupling force is calculated using a repulsive force model, and a contact detection method is established to capture the shape of the superquadric element and calculate the distance between the fluid particle and the surface of the superquadric element. Simulation cases verify the validity of the proposed coupling method, which accurately represents the water entry process of spherical solid particles and can simulate fluid-particle systems with solid particles of multiple shapes.
Article
Engineering, Marine
Ada Yilmaz, Selahattin Kocaman, Mustafa Demirci
Summary: This paper extends the implementation of DualSPHysics-Project Chrono coupling to hydroelasticity problems, achieving stable and accurate simulation results. The model is validated by experiments and literature cases, showing reasonable agreement with experimental measurements and other model computations.
Article
Mathematics, Interdisciplinary Applications
Ada Yilmaz, Selahattin Kocaman, Mustafa Demirci
Summary: A numerical model based on TLSPH and WCSPH coupling is developed for hydroelastic FSI problems. The model is verified using benchmark tests and compared to other numerical models. The effect of time integration on the solution accuracy is also investigated. The proposed model shows reasonable agreement with experimental results and provides smooth pressure/stress fields without instability.
COMPUTATIONAL PARTICLE MECHANICS
(2023)
