Search Results 1-20 of 10924

  • Weakly compressible particle method with physical consistency for spatially discretized system  [in Japanese]

    KONDO Masahiro , MATSUMOTO Junichi

    <p>本研究では、空間離散化して得られた粒子系が物理的健全性を有する微圧縮粒子法を開発した。熱力学第二法則や質量保存則のような基本的な物理法則を満たす支配方程式を用いた場合であっても、空間離散化後にはこれらの物理法則が満たされるとは限らない。しかし、離散化後の系も物理的健全性を有することは物理的に妥当な計算結果を得る上で重要である。本研究では、先行して開発された物理的健全性を有する非圧 …

    Transactions of the Japan Society for Computational Engineering and Science 2021(0), 20210006-20210006, 2021

    J-STAGE 

  • Reduced Numerical Modeling of a High Head Francis Turbine Draft Tube at Part Load

    Joy Jesline , Cervantes Michel J. , Raisee Mehrdad

    … Numerical studies performed in the past on nearly complete hydro-turbine models (inclusive of the spiral casing, distributor domains, runner, and draft tube) reportedly consist of a large number of computational grids. … This may increase the computational costs and data storage required to perform numerical analysis, which could be a setback for future research on new design concepts and optimization study of the draft tube domain. …

    International Journal of Fluid Machinery and Systems 14(1), 95-108, 2021

    J-STAGE 

  • Numerical Study on the Intake Performance with Side Clearance for the High Mach Integrated Control Experiment (HIMICO)

    YOSHIDA Hidekazu , SATO Tetsuya , SANO Masakazu , WAKABAYASHI Sho , CHIGA Takahiro , YOKOI Toshiya , HASHIMOTO Atsushi , MURAKAMI Keiichi , KOJIMA Takayuki , TAGUCHI Hideyuki

    <p>This paper shows the effect of the side clearance on the air-intake performance of a ramjet for the High Mach Integrated Control Experiment (HIMICO). As the result of the wind tunnel test, th …

    TRANSACTIONS OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES, AEROSPACE TECHNOLOGY JAPAN 19(2), 135-143, 2021

    J-STAGE 

  • Virtual screening identifies a novel piperazine-based insect juvenile hormone agonist

    Yokoi Taiyo , Nabe Taku , Horoiwa Shinri , Hayashi Ken'ichiro , Ito-Harashima Sayoko , Yagi Takashi , Nakagawa Yoshiaki , Miyagawa Hisashi

    … A database of 5 million purchasable compounds was sequentially processed with three computational filters: (i) shape and chemical similarity as compared to known JH-active compounds; … and (iii) free energy calculation of ligand–receptor binding using a modified MM/PBSA (molecular mechanics/Poisson–Boltzmann surface area) protocol. …

    Journal of Pesticide Science 46(1), 68-74, 2021

    J-STAGE 

  • Unsteady behavior and mechanism of a rotating stall in a centrifugal compressor with vaneless diffuser  [in Japanese]

    FUJISAWA Nobumichi , MIIDA Hiroshi , TAJIMA Kenta , OHTA Yutaka

    … <p>Unsteady diffuser stall behavior in a centrifugal compressor with a vaneless diffuser was investigated by experimental and computational analyses. …

    Transactions of the JSME (in Japanese) 87(894), 20-00364-20-00364, 2021

    J-STAGE 

  • Cerebellar foliation via non-uniform cell accumulation caused by fiber-guided migration of granular cells

    TAKEDA Hironori , KAMEO Yoshitaka , YAMAGUCHI Takahiro , NAKAJIMA Kazunori , ADACHI Taiji

    … Based on a continuum mechanics model of cerebellar tissue deformation and GC dynamics, we simulated foliation process caused by GC proliferation and migration. … Our computational approach will help us understand biological and physical morphogenesis mechanisms, facilitated by interactions between cellular activities and tissue behaviors.</p> …

    Journal of Biomechanical Science and Engineering, 2021

    J-STAGE 

  • Measurements of a Butterfly's Motion in Take-off and Numerical Simulations using a Computational Model reflecting Its Motion  [in Japanese]

    中村 優志 , 鈴木 康祐 , 吉野 正人

    ながれ : 日本流体力学会誌 = Nagare : journal of Japan Society of Fluid Mechanics 39(6), 332-335, 2020-12

  • Breathers in a three-layer fluid

    Nakayama K. , Lamb K. G.

    … The computational results show that the larger the amplitude, the shorter the length of the envelope of breathers, which agrees with the theoretical solution. …

    Journal of Fluid Mechanics (903), A40, 2020-11-25

    IR 

  • Computational Mechanics in Material Processing  [in Japanese]

    プロセッシング計算力学分科会

    塑性と加工 = Journal of the Japan Society for Technology of Plasticity : 日本塑性加工学会論文誌 61(716), 547-552, 2020-09

  • Numerical and Experimental Study of Topographic Speed-Up Effects in Complex Terrain

    Uchida Takanori , Sugitani Kenichiro

    … Our research group is developing computational fluid dynamics (CFD)-based software for wind resource and energy production assessments in complex terrain called RIAM-COMPACT (Research Institute for Applied Mechanics, Kyushu University (RIAM)-Computational Prediction of Airflow over Complex Terrain), based on large eddy simulation (LES). …

    Energies 13(15), 3896-1-3896-38, 2020-07-30

    IR 

  • Relation between Cutting Resistance and Crack Progress  [in Japanese]

    吉田 史郎

    計算工学講演会論文集 Proceedings of the Conference on Computational Engineering and Science 25, 5p, 2020-06

  • Multi-material Topology Optimization for Thermo-mechanical Problem Considering Material Strength  [in Japanese]

    渡邉 大貴 , 干場 大也 , 加藤 準治

    計算工学講演会論文集 Proceedings of the Conference on Computational Engineering and Science 25, 4p, 2020-06

  • The Effect of Arbitrariness of Admissible Function in Isolated Element Method  [in Japanese]

    風間 悦夫 , 菊地 厖

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

  • Computational Fluid Dynamics of Gastric Mixing and Emptying  [in Japanese]

    今井 陽介 , 石田 駿一

    ながれ : 日本流体力学会誌 = Nagare : journal of Japan Society of Fluid Mechanics 39(1), 20-25, 2020-02

  • Conference Reports : A Report of 23rd Applied Mechanics Symposium  [in Japanese]

    森口 周二 , 中井 健太郎 , 西尾 真由子 , 溝口 敦子 , 牛島 省

    計算工学 = Journal of the Japan Society for Computational Engineering and Science 25(4), 4173-4175, 2020

  • My Personal History in CAE : At the Beginning of the Early Days of Computational Mechanics  [in Japanese]

    川原 睦人

    計算工学 = Journal of the Japan Society for Computational Engineering and Science 25(1), 4043-4046, 2020

  • Computational Simulation Techniques for Additive Manufacturing of Metal Parts  [in Japanese]

    IKEDA Takashi , KOIKE Kuniaki , YIN Jun , SHIOTANI Hitoshi , ANDOH Tomoaki

    The Proceedings of Mechanical Engineering Congress, Japan 2020(0), F04107, 2020

    J-STAGE 

  • ON THE SIMILARITY OF A HYDRAULIC MODEL EXPERIMENT FOR A RIVER INCLUDING SEEPAGE FLOW THROUGH SATURATED POROUS RIVERBED MATERIALS  [in Japanese]

    YANG Hongxuan , FUKUMOTO Yutaka , HOSOYAMADA Tokuzo , OHTSUKA Satoru

    <p>浸透流と跳水を含む河川流を同時に計算する数値モデルの基礎方程式に基づいて,浸透流を含む河川の水理模型実験の相似性について調べた.理論的誘導と計算結果が,フルード相似を適用する河川の模型実験において河床壁面条件,河床粒径と河床材透水係数の相似に注意を払うべきと示した.1)河川流のフル ード相似を満たすのに長さ縮尺 1/N に従った河床の壁面相似が必要,2)掃流砂のシールズ相似を満た …

    Journal of Japan Society of Civil Engineers, Ser. A2 (Applied Mechanics (AM)) 76(2), I_411-I_422, 2020

    J-STAGE 

  • A SELECTIVE DUAL VELOCITY ISPH METHOD DIVIDING INTO PHYSICAL AND TRANSPORT VELOCITY FOR FLUID-SOLID PARTICLE MULTIPHASE SIMULATIONS  [in Japanese]

    FUJII Takehiro , ASAI Mitsuteru , IMOTO Yusuke

    <p>安定化 ISPH 法は,非圧縮性流れに対する粒子法の一種であり,圧力ポアソン方程式に粒子配置を平滑化するための安定化項を付加した粒子法である.固液混相流解析においては,固液の境界付近で生じる粒子密度の誤差を補正するため,安定化項の影響を大きくする必要がある.一方で,安定化項は物理変数に非物理的な影響を与えるため,激しい流れを伴う固液混相流解析では物理変数の誤差が影響して計算が不安 …

    Journal of Japan Society of Civil Engineers, Ser. A2 (Applied Mechanics (AM)) 76(2), I_247-I_257, 2020

    J-STAGE 

  • DEVELOPMENT OF PROBABILISTIC RISK EVALUATION METHOD WITH SURROGATE-MODELED NUMERICAL SIMULATIONS  [in Japanese]

    DEGUCHI Shota , ASAI Mitsuteru , UEKI Hiroto , TAKEUCHI Yuki , KAWASAKI Koji

    <p>同時に発生した巨大津波は東北地方沿岸部を中心に広域的かつ甚大な被害をもたらした.また近年では各地で豪雨災害が頻発し,自然災害時の被害予測が求められている.しかし,自然現象は多くの不確実性を有しており,災害シミュレーションにおいてはシナリオの設定が困難である.こうした背景から,不確かさを定量化するために,詳細な数値解析を代理表現する簡易なサロゲートモデルを構築し,低計算コストで被害 …

    Journal of Japan Society of Civil Engineers, Ser. A2 (Applied Mechanics (AM)) 76(2), I_565-I_576, 2020

    J-STAGE 

Page Top