Search Results 1-20 of 1434

  • Hybrid Forces Molecular Dynamics on the Lability, Dynamics and "Structure Breaking Effect" of Cs<sup>+</sup> in Liquid Ammonia

    Hidayat Yuniawan , Rahmawati Fitria , Nurcahyo IF , Prasetyo Niko , Pranowo Harno Dwi

    … and the angular distribution function (ADF) confirmed a distorted capped square antiprism geometry. …

    Bulletin of the Chemical Society of Japan 94(1), 204-208, 2021


  • An immersed boundary method for practical simulations of high-Reynolds number flows by <i>k-ε</i> RANS models

    YAO Hiroki , NAMBU Taisuke , MIZOBUCHI Yasuhiro

    … The computational method for <i>ε</i>-equation and the source terms of the <i>k</i>-equation near IB cells are modified so that the development of the turbulent boundary layer on a flat plate is well reproduced. …

    Journal of Fluid Science and Technology 16(1), JFST0007-JFST0007, 2021


  • Editor's Message for Special Issue of Discrete and Computational Geometry, Graphs, and Games

    Hiro Ito

    \n------------------------------This is a preprint of an article intended for publication Journal ofInformation Processing(JIP). This preprint should not be cited. Thisarticle should be cited as: Jour …

    情報処理学会論文誌 61(12), 2020-12-15


  • Proposal of bond behavior simulation model by using discretized voronoi mesh for concrete and beam element for reinforcement

    Farooq Usman , Nakamura Hikaru , Miura Taito , Yamamoto Yoshihito

    … In this method, concrete was modeled by rigid particles using a voronoi mesh with random geometry and rebar was modeled by beam element connected to concrete through a link element that was assigned a suitable local bond model. … Based on analytical results, it was confirmed that the proposed simplified model can evaluate bond behavior like three dimensional rebar model with rib shape, consequently, it provides an economical and efficient alternative due to lesser computational elements. …

    Cement and Concrete Composites (110), 103593, 2020-07


  • Open-grill vehicle aerodynamic simulation with tire rotation using Cartesian grid method  [in Japanese]

    大西 慶治 , 坪倉 誠

    計算工学講演会論文集 Proceedings of the Conference on Computational Engineering and Science 25, 3p, 2020-06

  • Aerodynamic Development for Mazda CX-30 by Using Flow Control Technology Around Tire  [in Japanese]

    Nakata Akihiro , Morikawa Yosuke , Okamoto Satoshi

    … However, the aerodynamic drag depends on the geometry of the vehicle, so both the aerodynamic performance and the design are necessary for the product development. … We studied the Computational Fluid Dynamics (CFD) technique and aerodynamic drag reduction technology, focusing on the tire with rotation. …

    Mazda Technical Review 37(0), 19-26, 2020


  • Hardness of Reconfiguring Robot Swarms with Uniform External Control in Limited Directions

    Caballero David , A. Cantu Angel , Gomez Timothy , Luchsinger Austin , Schweller Robert , Wylie Tim

    … <p>Motivated by advances in microscale applications and simplistic robot agents, we look at problems based on using a global signal to move all agents when given a limited number of directional signals and immovable geometry. … We further define a hierarchy of board geometries and show that this hardness holds for even very restricted classes of board geometry.</p> …

    Journal of Information Processing 28(0), 782-790, 2020


  • Sublinear Explicit Incremental Planar Voronoi Diagrams

    Arseneva Elena , Iacono John , Koumoutsos Grigorios , Langerman Stefan , Zolotov Boris

    <p>A data structure is presented that explicitly maintains the graph of a Voronoi diagram of <i>N</i> point sites in the plane or the dual graph of a convex hull of points in three d …

    Journal of Information Processing 28(0), 766-774, 2020


  • Editor's Message for Special Issue of Discrete and Computational Geometry, Graphs, and Games

    Ito Hiro

    Journal of Information Processing 28(0), 744-744, 2020


  • Numerical analysis of fluid lubrication in line contact by using the MPS method  [in Japanese]

    NEGISHI Hideyo , FUJIHARA Hironori , TAKAHASHI Hidenao , SHIBATA Kazuya , MANIWA Kazuaki , OBARA Shingo

    … When applying the classical approach to practical applications like rolling element bearings, it is difficult to specify boundary conditions at appropriate locations in order to solve the Reynolds equation due to complex geometry, unknown amount of oil lubricant around contacts, and interaction between multiple lubricated contacts. …

    Transactions of the JSME (in Japanese) 86(890), 20-00241-20-00241, 2020


  • Projection with Gaussian Kernel for Person Re-Identification

    Anh Dao Nam , Nguyen Thuy-Binh , Le Thi-Lan

    … The advantage of the proposed method is that it allows simultaneous matching of the descriptors while preserving the local geometry of the manifolds. …

    Journal of Advanced Computational Intelligence and Intelligent Informatics 24(5), 638-647, 2020


  • Following Response of Laser-Supported Detonation by Periodic Change of Irradiated Laser Intensity  [in Japanese]

    SHIRAISHI Hiroyuki

    … In this study, the unsteady performances are investigated by one-dimensional simple geometry and variable laser intensity using a computational fluid dynamics (CFD) analysis with the thermochemical non-equilibrium model for inert gas plasma.The periodic irradiative laser intensity is instantly followed by LSD propagation velocity and the history is negligible, therefore the velocity can be evaluated from the laser intensity. …

    Applied Plasma Science 28(1), 41-46, 2020


  • Personalized computational mechanobiology allows predicting the progression of emphysema from CT images  [in Japanese]

    Suki Béla , Nia Hadi T. , Lutchen Keneth R.

    … Although computational models have been proposed to understand the process via mechanical failure, they lack patient specificity. … The aim of this work was to develop a computational model that allows spatiotemporal simulations of patient specific tissue loss on CT images. … We created a large 2-dimensional hexagonal elastic network to recapitulate the alveolar geometry. …

    Transactions of Japanese Society for Medical and Biological Engineering Annual58(Abstract), 187-187, 2020


  • Inner and Outer-Layer Similarity of the Turbulence Intensity Profile over a Realistic Urban Geometry

    Inagaki Atsushi , Wangsaputra Yovita , Kanda Manabu , Yücel Meral , Onodera Naoyuki , Aoki Takayuki

    … The simulations consider a developing neutral boundary layer over realistic building geometry with and without a slightly upsloping terrain. … The computational domain covers an 19.2 km by 4.8 km and extends up to a height of 1 km, and is resolved by 2-m grids. … Several turbulence intensity profiles are defined locally in the computational domain. …

    SOLA 16(0), 120-124, 2020


  • Adaptive Transmission Mode Switching in Interference Alignment Based Clustered Wireless Network

    CHO Sungyoon , SEO Jeongwook

    … For ICI mitigation, we propose a null-steering precoder designed on the nullspace of a principal eigenvector of the correlated ICI channels, which eliminates a significant amount of ICI power given the exchange of cluster geometry between neighboring clusters. … Moreover, a low computational complexity based transmission mode switching algorithm is proposed for irregularly distributed networks.</p> …

    IEICE Transactions on Communications E103.B(4), 485-494, 2020


  • The Dynamic Characteristics of a Small Hydraulic Poppet Safety Relief Valve

    Sang Yong , Wang Xudong , Sun Weiqi

    … In this paper, a two-dimensional axisymmetric geometry model of the hydraulic poppet safety relief valve with a small size is established. …

    International Journal of Fluid Machinery and Systems 13(1), 233-240, 2020


  • HLABAP: HLA Class I-Binding Antigenic Peptide Predictor

    Kataoka Ryoichi , Amari Shinji , Ikegami Takashi , Hirayama Noriaki

    Computational methods have been proposed to address this problem. … By the combination of homology modeling for posing instead of docking and geometry optimization of the complex structures between the HLA molecule and peptides, HLABAP well predicts the binding affinities for the peptides. …

    Chem-Bio Informatics Journal 20(0), 1-4, 2020


  • Aerodynamics of Owl-like Wing Model at Low Reynolds Numbers

    AONO Hikaru , KONDO Katsutoshi , NONOMURA Taku , ANYOJI Masayuki , OYAMA Akira , FUJII Kozo , YAMAMOTO Makoto

    … = <i>O</i>(10<sup>4–5</sup>)) are investigated using large-eddy simulations with high-resolution computational schemes. … The airfoil shape of the owl-like wing model is constructed based on a cross-sectional geometry of the owl wing at 40% wingspan from the root. …



  • Effects of Piston Bowl Diameter on Combustion Characteristics of a Natural gas/Diesel Dual Fuel Engine

    Takizawa Keigo , Tanaka Hidetake , Horibe Naoto , Ishiyama Takuji , Sako Takahiro

    … The combustion chamber geometry affects the combustion process since it influences the distribution of the pilot fuel vapor. … This study investigates the influence of injection conditions and the piston bowl geometry on the performance and emissions of a dual fuel engine. … To elucidate the effects of pilot fuel distribution, computational fluid dynamics (CFD) calculations were conducted for non-reacting pilot fuel sprays under conditions equivalent to the experiments. …

    SAE Technical Paper, 2019-12-19



    NOBATA Tsuyoshi , HONMA Yudai , IMAI Kotaro

    … All of the above computational procedure can be completed within a realistic time, and we believe that this study proposes a new possibility of morphological analysis for architectural space. …

    Journal of Architecture and Planning (Transactions of AIJ) (766), 2545-2552, 2019-12


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