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  • Open Access

    ARTICLE

    Fluid Flow Simulation Using Particle Method and Its Physics-based Computer Graphics

    Kazuhiko Kakuda1, Shunsuke Obara1, Jun Toyotani1, Mitsuhiko Meguro1, Masakazu Furuichi1

    CMES-Computer Modeling in Engineering & Sciences, Vol.83, No.1, pp. 57-72, 2012, DOI:10.3970/cmes.2012.083.057

    Abstract The application of a particle method to incompressible viscous fluid flow problem and its physics-based computer graphics are presented. The method is based on the MPS (Moving Particle Semi-implicit) scheme using logarithmic weighting function to stabilize the spurious oscillatory solutions for the pressure fields which are governed by Poisson equation. The physics-based computer graphics consist of the POV-Ray (Persistence of Vision Raytracer) rendering using marching cubes algorithm as polygonization. The standard MPS scheme is widely utilized as a particle strategy for the free surface flow, the problem of moving boundary, multi-physics/multi-scale ones, and so forth. More >

  • Open Access

    ABSTRACT

    Flow Simulations by a Particle Method Using Logarithmic Weighting Function

    K. Kakuda, J. Toyotani, S. Matsuda, H. Tanaka, K. Katagiri

    The International Conference on Computational & Experimental Engineering and Sciences, Vol.17, No.4, pp. 105-106, 2011, DOI:10.3970/icces.2011.017.105

    Abstract The application of a particle method to incompressible viscous fluid flow problems is presented. The method is based on the MPS (Moving Particle Semi-implicit) scheme using logarithmic weighting function. Numerical results demonstrate the workability and the validity of the present approach through incompressible viscous fluid flow in a driven cavity and flow behavior in a liquid ring pump with rotating impeller blades. More >

  • Open Access

    ARTICLE

    Advances in Computational Methods for Multibody System Dynamics

    R.L. Huston1, C.-Q. Liu2

    CMES-Computer Modeling in Engineering & Sciences, Vol.10, No.2, pp. 143-152, 2005, DOI:10.3970/cmes.2005.010.143

    Abstract This paper presents a summary of recent developments in computational methods for multibody dynamics analyses. The developments are presented within the context of an automated numerical analysis. The intent of the paper is to provide a basis for the easy development of computational algorithms. The principal concepts discussed are: differentiation algorithms, partial velocities and partial angular velocities, generalized speeds, Euler parameters, Kane's equations, orthogonal complement arrays, lower body arrays and accuracy testing functions. More >

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