円柱形粒子の分散を伴う格子乱流場における粒子と流体の運動機構(流体工学,流体機械)  [in Japanese] Paticle Motion and Flow Structure in Grid-Generated Turbulence with Columnar Particle Dispersions(Fluids Engineering)  [in Japanese]

Abstract

Particle motion and flow structure were experimentally investigated in grid-generated turbulence with spherical or columnar particle dispersions. Particle motions were taken by a high-speed video camera and instantaneous streamwise and horizontal velocities were measured using a PIV. The results show that columnar particles fall without clustering in the free-falling particle experiment, whereas spherical particles form clusters during the falling process. Turbulence intensity in the grid generated turbulence with columnar particle dispersion is larger than that in the turbulence with spherical particle dispersion. It is found by flow visualization that these differences in particle motion and fluid structure are attributed to the irregular horizontal movements and rotation of columnar particles.

Journal

Transactions of the Japan Society of Mechanical Engineers. B   [List of Volumes]

Transactions of the Japan Society of Mechanical Engineers. B 74(744), 1770-1776, 2008-08-25  [Table of Contents]

The Japan Society of Mechanical Engineers

References:  11

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Codes

  • NII Article ID (NAID) :
    110006873941
  • NII NACSIS-CAT ID (NCID) :
    AN00187441
  • Text Lang :
    JPN
  • Article Type :
    ART
  • ISSN :
    03875016
  • NDL Article ID :
    9627554
  • NDL Source Classification :
    ZN11(科学技術--機械工学・工業)
  • NDL Call No. :
    Z16-109
  • Databases :
    CJP  NDL  NII-ELS