Search Results 1-20 of 45

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  • Recent Progress on Mesh-free Particle Methods for Simulations of Multi-phase Flows: A Review

    Sakai Mikio , Mori Yuki , Sun Xiaosong , Takabatake Kazuya

    … <p>The discrete element method (DEM) and the moving particle semi-implicit (MPS) method are the most popular mesh-free particle methods in the discontinuum and continuum. … The phase change simulation is shown to be efficiently performed through an implicit algorithm and a heat flux model in the MPS method. …

    KONA Powder and Particle Journal 37(0), 132-144, 2020

    J-STAGE 

  • TOPOLOGY OPTIMIZATION FOR ELASTIC STRUCTURES WITH FINITE DEFORMATION USING HMPS METHOD AND IESO METHOD  [in Japanese]

    FUJII Daiji , YAMASHITA Masaki , MANABE Masatoshi

    … That is, HMPS (Hamiltonian Moving Particle Semi-implicit) method [12-14] is used instead of MPS method [11], and IESO (Improved Evolutionary Structural Optimization) method with finishing algorithm is used instead of CA-ESO method.</p><p> In Section 2, the formulation of HMPS method is shown so that our created program can be understood. … In Section 3, the outline of IESO method with finishing algorithm using HMPS method is explained. …

    Journal of Structural and Construction Engineering (Transactions of AIJ) (764), 1337-1344, 2019-10

    J-STAGE  AIJ 

  • Topology optimization for fluid flows using the MPS method incorporating the level set method

    Sasaki Y. , Sato Y. , Yamada T. , Izui K. , Nishiwaki S.

    … The moving particle semi-implicit (MPS) method is one of the particle methods, which can be used to analyze incompressible free surface fluid flows. … The optimization algorithm is constructed based on those formulations, and the validity and the availability of the proposed method are confirmed through several numerical examples. …

    Computers & Fluids (188), 86-101, 2019-06-30

    IR 

  • Computational Fluid Dynamics with Cavitations in a Fuel Nozzle Using Particle Method  [in Japanese]

    SEKINE Akihiro , KOSHIZUKA Seiichi , SHIBATA Kazuya , YOSHIMURA Kazuki , ISHII Eiji

    … <br>本研究では粒子法の利点を活かすべく, 粒子法の一種であるMPS (Moving Particle Semi-implicit) 法を用いてノズル内キャビテーション解析のための新たなキャビテーションモデルの開発を行い, 検証を行った. …

    Transactions of the Japan Society for Computational Engineering and Science 2017(0), 20170013-20170013, 2017

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  • Coupled Analysis by Viscoelastic Body with Rigid Body for Design of MRE Soft Actuator  [in Japanese]

    Murao Shunta , Mitsufuji Kenta , Hirata Katsuhiro , Miyasaka Fumikazu

    … We developed a coupled analysis method by combining the moving particle semi-implicit/simulation (MPS) method with the finite element method (FEM) for the design of the MRE actuator. … The numerical algorithm is described, and the calculated results are shown.</p> …

    IEEJ Transactions on Industry Applications 137(8), 647-653, 2017

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  • Level Set Based Topology Optimization of A Flexible Multibody Dynamic System Described by ANCF  [in Japanese]

    Sun Jialiang , Tian Qiang , Hu Haiyan

    … Then, the semi-implicit level set method (LSM) with the additive operator splitting (AOS) algorithm is employed to solve the corresponding Hamilton-Jacobi partial differential equation (PDE). …

    The Proceedings of the Asian Conference on Multibody Dynamics 2016.8(0), 17_1288951, 2016

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  • An Enhanced Coupled Lagrangian Solver for Incompressible Fluid and Non-linear Elastic Structure Interactions  [in Japanese]

    KHAYYER Abbas , FALAHATY Hosein , GOTOH Hitoshi , KOGA Takazumi

    … The fluid solver provides solutions to the continuity and Navier-Stokes equations on the basis of the projection-based Moving Particle Semi-implicit (MPS) method. … The fluid and structure solvers are properly coupled through a consistent coupling algorithm. …

    Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering) 72(2), I_1117-I_1122, 2016

    J-STAGE 

  • An Enhanced Fully Lagrangian Coupled MPS-based Solver for Fluid-Structure Interactions  [in Japanese]

    KHAYYER Abbas , GOTOH Hitoshi , PARK Jong-Chun , HWANG Sung-Chul , KOGA Takazumi

    … The solver is based on Moving Particle Semi-implicit (MPS) method which solves the governing equations corresponding to incompressible fluid flows as well as elastic structures and includes a consistent coupling algorithm. …

    Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering) 71(2), I_883-I_888, 2015

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  • Moving particle semi-implicit method for fluid simulation with implicitly defined deforming obstacles

    Kanetsuki Yasutomo , Nakata Susumu

    … For defining the geometric information of time-varying obstacles, we employ the implicit function form that varies along the time axis. … Our fluid simulation is based on the Moving Particle Semi-implicit (MPS) method, one of the typical particle-based methods for incompressible flow, and we add a new formulation for implicitly defined deforming obstacles. …

    Journal of Advanced Simulation in Science and Engineering 2(1), 63-75, 2015

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  • Level Set-Based Topology Optimization in an Incompressible Viscous Flow using the Finite Volume Method  [in Japanese]

    KOGUCHI Atsushi , YAJI Kentaro , YAMADA Takayuki , IZUI Kazuhiro , NISHIWAKI Shinji

    … 随伴方程式は連続系に基づき導出し, 有限体積法により離散化して数値安定性に優れている半陰解法のSIMPLE法(Semi-Implicit Method for Pressure Linked Equation) を用いて解析している. …

    Transactions of the Japan Society for Computational Engineering and Science 2015(0), 20150002-20150002, 2015

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  • ICONE23-1572 SIMULATION OF A SINGLE MOLTEN METAL DROPLET PENETRATING INTO SODIUM POOL USING MOVING PARTICLE SEMI-IMPLICIT METHOD

    Yang Zhi , Zhang Zhi-gang , Guo Ming , Wang Fang

    … Based on so many difficulties with large deformation and numerical incontinuous problems in mesh method, a meshless moving particle semi-implicit (MPS) method is introduced in this study. … The improved MPS algorithm with surface tension model is adopted to a series of simulation of a single molten stainless steel droplet penetrating into the sodium pool in the range of 1 < …

    The Proceedings of the International Conference on Nuclear Engineering (ICONE) 2015.23(0), _ICONE23-1-_ICONE23-1, 2015

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  • 031 A semi-implicit surface tension modeling for the particle methods  [in Japanese]

    Tamai Tasuku , Koshizuka Seiichi

    … In this study, a semi-implicit time integration algorithm of surface tension effects for incompressible flows is proposed. …

    The Proceedings of The Computational Mechanics Conference 2015.28(0), _031-1_-_031-3_, 2015

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  • Numerical analysis of high viscous non-Newtonian fluid flow using the MPS method  [in Japanese]

    FUKUZAWA Yohei , TOMIYAMA Hideki , SHIBATA Kazuya , KOSHIZUKA Seiichi

    本論文では、メッシュを必要としない粒子法の一種であるMPS法を高粘性非ニュートン流体(樹脂流体)の流動解析に適用した。<br>MPS法を用い、樹脂流動を示す擬塑性流体モデルとした流動解析手法を開発した。また 従来のMPS法で高粘性流体を計算する際には刻み時間を微小に設定しなければならず、計算時間が莫大になるといった問題があった。この問題を克服するため、粘性項の速度演算を従来のMPS法で …

    Transactions of the Japan Society for Computational Engineering and Science 2014(0), 20140007-20140007, 2014

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  • Accurate Incompressible SPH Method for Simulation of Wave Breaking on Vertical Seawall  [in Japanese]

    GOTOH Hitoshi , ARIKAWA Taro , KHAYYER Abbas , IKARI Hiroyuki , SHIMOSAKO Kenichiro , ARAKI Kazuhiro , UEHARA Yasushi

    … The SPH, which is the predominant method in the international research society, contains unphysical artificial viscosity due to its explicit algorithm. … The ISPH method evades the artificial viscosity by introducing semi-implicit algorithm, however it suffers from another drawback, namely a pressure fluctuation. …

    Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering) 70(2), I_21-I_25, 2014

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  • Coupled Simulation of Seismic Wave Propagation and Failure Phenomena by Use of an MPS Method

    Takekawa Junichi , Mikada Hitoshi , Goto Tada-nori , Sanada Yoshinori , Ashida Yuzuru

    … This study deals with the coupled simulation of elastic wave propagation and failure phenomena by use of a moving particle semi-implicit (MPS) method. … In the application of the MPS, the algorithm is basically the same as in the previous calculation except for the introduction of a failure criterion. … We applied the developed algorithm to a suspended specimen that was modeled as a long bar consisting of thousands of particles. …

    Pure and Applied Geophysics 170(4), 561-570, 2013-04

    IR 

  • A Topology Optimization Method for Geometrically Nonlinear Problems Incorporating Level Set Boundary Expressions and a Particle Method

    YAMADA Takayuki , MANABE Masatoshi , IZUI Kazuhiro , NISHIWAKI Shinji

    … In the proposed method, the MPS (Moving Particle Semi-implicit) method is used for solving the state equation, since it does not use a mesh for geometrically nonlinear analysis. … The reaction-diffusion equation that updates the level set function is then derived and an optimization algorithm, which uses the FEM to solve the reaction-diffusion equation when updating the level set function, is constructed. …

    Journal of Advanced Mechanical Design, Systems, and Manufacturing 7(4), 630-643, 2013

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  • Effects of Internal Pressure and Inlet Velocity Disturbances of Air and Fuel Droplets on Spray Combustion Field

    KITANO Tomoaki , KUROSE Ryoichi , KOMORI Satoru

    … The pressure perturbation is captured by employing a pressure-based semi-implicit algorithm for compressible flows. …

    Journal of Thermal Science and Technology 8(1), 269-280, 2013

    J-STAGE 

  • 1215 Fundamental Study on Least Squares Moving Particle Semi-implicit (LSMPS) Method  [in Japanese]

    TAMAI Tasuku , SIBATA Kazuya , MUROTANI Kouhei , KOSIZUKA Seiichi

    … In this paper, we introduce a new consistent particle method - "Least Squares Moving Particle Semi-implicit (LSMPS) method",including high order meshfree schemes, time marching algorithm, treatment of boundary conditions, and their application for numerical analysis of incompressible flow with the free surfaces. …

    The Proceedings of The Computational Mechanics Conference 2013.26(0), _1215-1_-_1215-3_, 2013

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  • GPU-acceleration for Moving Particle Semi-Implicit method

    … The MPS (Moving Particle Semi-implicit) method has been proven useful in computation free-surface hydrodynamic flows. …

    Computers & Fluids 51(1), 174-183, 2011-12

    IR 

  • Application of a degenerate diffusion method in medical image processing (Czech Japanese Seminar in Applied Mathematics 2010 : Praha/Telc, September 2010)

    Maca Radek , Benes Michal , Tintera Jaroslav

    … The semi-implicit complementary-volume numerical scheme is used for solving the level-set equation. … The final part of the paper describes algorithm parameters and their setting used for segmentation of the left heart ventricle in the cardiac MRI images. …

    JMI : journal of math-for-industry (Special Issue), 33-40, 2011

    IR 

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