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An overview of particle-based numerical manifold method and its application to dynamic rock fracturing

Journal of Rock Mechanics and Geotechnical Engineering 2019年第3期11卷 684-700页

作者： Xing Li Jian Zhao School of Civil Engineering Southeast UniversityNanjing211189China Department of Civil Engineering Monash UniversityClaytonVIC3800Australia

This review summarizes the development of particle-based numerical manifold method(PNMM)and its applications to rock *** fundamental principle of numerical manifold method(NMM)is first briefly ***,the history of the newly developed PNMM is *** idea of PNMM and its simulation procedure are *** that PNMM could be regarded as an NMM-based model,a comparison of PNMM and NMM is discussed from several points of view in this ***,accomplished applications of PNMM to the dynamic rock fracturing are also ***,some recommendations are provided for the future work of PNMM.

关键词： Dynamic rock fracturing Numerical modeling Numerical manifold method(NMM) particle-based numerical manifold method(PNMM)

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Hydrodynamic Simulation of Wave Energy Converter Using particle-based Computational Fluid Dynamics

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Journal of Marine Science and Application 2019年第1期18卷 48-53页

作者： Yodchai Tiaple Department of Maritime Engineering Faculty of International Maritime Studies Kasetsart UniversitySriracha Campus

Wave energy from the ocean is currently a very popular renewable energy, and its development has primarily focused on the shape of the wave energy converter(WEC) used to efficiently convert wave energy into electrical energy. However, the free surface ocean wave problem is very complex and the parameters affecting WEC behavior are difficult to understand. In this paper, based on the Lattice-Boltzmann method, we present particle-based CFD simulation results for the pivoted-type WEC that exhibits both vertical and horizontal motions. In this method, the computation domain need not be a mesh and complex geometry is not a limiting factor. Using a free-surface turbulence model, we simulated the fluid-structure interaction. We detail our simulation results, which show good agreement with those in the literature.

关键词： Wave energy converter Pivoted buoy Lattice-Boltzmann particle-based CFD

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A Research on particle-based Parallel Methods for Fluid Animation

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Journal of Mathematics and System Science 2015年第6期5卷 225-231页

作者： Fengquan Zhang Junli Qin College of Computer Science North China University of Technology Beij'ing I O0144 China.

In this paper, we present an acceleration strategy for Smoothed particle Hydrodynamics （SPH） on multi-GPU platform. For single-GPU, we first use a neighborhood search algorithm of compacting cell index combined with spatial domain characteristics For multi-GPU, we focus on the changing patterns of SPH＇s computational time. Simple dynamic load balancing algorithm works well because the computational time of each time step changes slowly compared to previous time step. By further optimizing dynamic load balancing algorithm and the communication strategy among GPUs, a nearly linear speedup is achieved in different scenarios with a scale of millions particles. The quality and efficiency of our methods are demonstrated using multiple scenes with different particle numbers.

关键词： CFD particle-based Fluid GPU

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