Search Results 1-14 of 14

  • Experiments of Cylinder Drag through Density-Matching Particle-Fluid Mixture and SPH Simulation  [in Japanese]

    OTAKE Keisuke , GUO Siliang , MATSUSHIMA Takashi

    … A series of cylinder drag experiments were conducted using the density-matching Poly-Styrene Beads particle-fluids mixture to study the flow characteristics of liquefied sands. … SPH (Smoothed Particle Hydrodynamics) simulations were also conducted to compare with the experimental results. …

    Journal of Japan Society of Civil Engineers, Ser. A2 (Applied Mechanics (AM)) 72(2), I_399-I_407, 2016

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  • An Adaptive Model for Particle Fluid Surface Reconstruction

    ZHANG Fengquan , SHEN Xukun , LONG Xiang

    … For computational efficiency, instead of computing scalar field in overall particle sets, we only construct scalar field around fluid surfaces. … The proposed method can not only effectively preserve fluid details, such as splashes, droplets and surface wave phenomena, but also save computational costs. … The experimental results show that our method can reconstruct the realistic fluid surfaces with different particle sets. …

    IEICE Transactions on Information and Systems 96(5), 1247-1250, 2013-05-01

    J-STAGE  References (11)

  • Glass Transition of the Monodisperse Gaussian Core Model

    Ikeda Atsushi , Miyazaki Kunimasa , 宮崎 州正

    … The system concomitantly exhibits glassy, slow dynamics characterized by the two-step stretched exponential relaxation of the density correlation and a drastic increase of the relaxation time. … Additionally, the agreement of the simulation data with the prediction of mode-coupling theory is exceptionally good, indicating that the nature of the slow dynamics of this ultrasoft particle fluid is mean-field-like. …

    Physical review letters 106(1), 015701, 2011-01

    IR 

  • Radiation Imaging of Magnetic Nano-Particle Fluid in a Mouse Body  [in Japanese]

    NAGASAKI Toshinori , KOIDE Kazuharu , MAKINO Ken-ich , KONDO Takeshi , UMEZAWA Keiji , AKUTSU Mitsuo , MASUYAMA Kazunori , UOZUMI Yusuke , NAKANO Masahiro , MATSUURA Hiroaki , JU Dong-Ying , KUMAZAWA Takasi , KIMURA Shinzo , BIAN Pei , NODA Nobuo

    … 磁性流体はナノサイズ粒子であるため,その誘導性を利用して薬剤送達を行うMT-DDS(Magnetic Targeting Drug Delivery System)は,能動的薬剤送達システムとして注目されているが,目標部位へのキャリアの集積状況を観察する方法には未だ具体的な提案はない.そこで今回,大型放射光施設SPring-8を用いてマウスの腎臓と頭部で磁性流体の分布を観察し,評価することを目的として実験を行った.実験の結果から,放射光の透過撮影によって生 …

    Journal of Biomedical Fuzzy Systems Association 11(1), 11-16, 2009

    J-STAGE  Ichushi Web  References (8)

  • Morphology Control of Copper Sulfide in Strip Casting of Low Carbon Steel  [in Japanese]

    LIU Zhongzhu , KOBAYASHI Yoshinao , NAGAI Kotobu , YANG Jian , KUWABARA Mamoru

    … The motion of the thin disk and its surrounding water velocity field were simultaneously measured using the MOFIA system. … The velocity field around the disk was measured by particle image velocimetry (PIV). …

    Tetsu-to-Hagane 93(11), 655-663, 2007-11-01

    J-STAGE  References (9)

  • DEVELOPMENT OF LAT-PIV VISUALIZATION TECHNIQUE FOR PARTICLE-FLUID SYSTEM

    SAOMOTO Hidetaka , MATSUSHIMA Takashi , YAMADA Yasuo

    … Mechanical behavior of particle-fluid systems is extensively studied in various engineering field such as geotechnical engineering, mechanical engineering and powder technology. … Although observation of complicated behaviors including interaction between particles and pore fluid is essential, very few efficient techniques are available for this purpose. …

    STRUCTURAL ENGINEERING / EARTHQUAKE ENGINEERING 24(2), 123S-130S, 2007

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  • MODULATION OF TURBULENT STRUCTURE AND FLUID-PARTICLE INTERACRIONS IN SEDIMENT-LADEN FLOWS OVER DEVELOPING SAND DUNES  [in Japanese]

    NOGUCHI Kazunori , NEZU Iehisa , SANJOU Michio

    … In this study, we conducted the fluid-particle simultaneous measurements in order to reveal the fluidparticle interaction mechanism in the developing stages of sand dunes. … Instantaneous velocity vectors over the growing sand dunes were measured by the discriminator particle-image velocimetory (D-PIV) and discriminator particle-tracking velocimetory (D-PTV), which was developed by Nezu & …

    Journal of applied mechanics (10), 803-812, 2007

    J-STAGE  Cited by (1)

  • EFFECTS OF SEDIMENT CONCENTRATION ON TURBULENT STRUCTURE IN SEDIMENT-LADEN OPEN-CHANNEL FLOW OVER SAND DUNES  [in Japanese]

    NEZU Iehisa , NOGUCHI Kazunori , SANJOU Michio

    … The present study describes an experimental investigation on effects of sediment concentration on turbulent structure in suspended sediment-laden open-channel flows over sand dunes by using both a discriminator particle tracking velocimetory (D-PTV) and a discriminator particle image velocimetory (D-PIV). … D-PTV system was developed by Nezu & …

    Journal of applied mechanics (9), 951-958, 2006

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  • Study on Particle-fluid Interaction and Turbulence Modulation in Sediment-laden Open-channel Flow over Sand Dunes  [in Japanese]

    NEZU Iehisa , NOGUCHI Kazunori , AZUMA Ryoukei

    … This study describes experimental investigation on particle-fluid interaction and turbulence modulation in suspended sediment-laden open-channel flow over sand dunes by using a discriminator particle tracking velocimetory (D-PTV), which was developed by Nezu and Azuma (JHE, ASCE, 2004). …

    Journal of applied mechanics (8), 901-910, 2005

    J-STAGE  Cited by (1)

  • Development of LAT-PIV Visualization Technique for Particle-Fluid System  [in Japanese]

    SAOMOTO Hidetaka , MATSUSHIMA Takashi , YAMAD Yasuo

    … Mechanical behavior of particle-fluid systems is extensively studied in various engineering field such as geotechnical engineering, mechanical engineering and powder technology. … Although observation of complicated behaviors including interaction between particles and pore fluid is essential, very few efficient techniques are available for this purpose. …

    Journal of applied mechanics (8), 601-608, 2005

    J-STAGE 

  • A Particle-Fluid Hybrid Simulation Model Based on Nonlinear Gyrokinetics

    TOKUDA Shinji , NAITOU Hiroshi , LEE William wei-li

    … A self-consistent particle-fluid hybrid simulation model has been formulated based on the nonlinear gyrokinetics in which the electron inertia is retained. … The characteristic function and the cumulant function of the electron distribution are employed in deriving the electron fluid response. …

    Journal of plasma and fusion research 74(1), 44-53, 1998-01-25

    NDL Digital Collections  References (33) Cited by (5)

  • Study of Plasma Structures in an ECR Discharge Using Laser Thomson Scattering Diagnostics  [in Japanese]

    牟田 浩司 , 吉田 光宏 , 田中 博之 , ボーデン マーク , 内野 喜一郎 , 村岡 克紀 , 前田 三男 , 真鍋 由雄 , ポーテウス ロバート

    … We have constructed a new diagnostic system using laser Thomson scattering for the study of spatial structures of ECR plasmas. … The system enables us to obtain unambiguous profiles of electron density and temperature of the plasmas, which can be quantitatively compared with simulation results so as to discuss the underlying physics. …

    九州大学大学院総合理工学報告 16(4), 407-414, 1995-03-01

    IR  DOI 

  • Transition Velocities in Horizontal Solid-Liquid Two-Phase Flow  [in Japanese]

    Toda Masayuki , Yonehara Jun , Kimura Tsuneo , Maeda Siro

    球形ガラス粒子, 非球形ガラス粒子, 方解石, 塩基性珪酸鉛および砂鉄などの固体粒子を用いて水平固液混相流の実験を行い, 圧力損失および流動様式の変わる点の流速について実験的検討を行った.<BR>不均一浮遊流から摺動流への遷移点の流速は粒子濃度および終末速度の増加とともに増大する.閉塞点の流速は粒子と流体との密度比, 粒径, 管径および粒子濃度により影響される.また粒子濃度が0.6~4 …

    KAGAKU KOGAKU RONBUNSHU 3(5), 497-503, 1977

    J-STAGE 

  • Studies on Inclined Fluidized Bed with Vibration  [in Japanese]

    Arai Norio , Sugiyama Sachio , Hasatani Masanobu

    傾斜型流動層に上, 下方向の機械的な振動 (α<SUB>0</SUB>ω<SUP>2</SUP>=0.8~2.48g <I>N</I>=29.6c. p. s) を加えることの有効性を粒子の流動状態ならびに粒子-流体間の熱移動速度を例にとって実験的に検討した結果, つぎに示すような結論が得られた。ただし, 流体として空気を用い …

    Chemical engineering 36(2), 181-185,a1, 1972

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