Turbulence structure of liquid-solid two-phase channel flow (1st report, measurements of two-phase flow by DPIV)

Koichi Hishida, Akira Hanzawa, Jun Sakakibara, Yohei Sato, Masanobu Maeda

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

The interactions between dispersed particles and fluid turbulence have been investigated in a fully-developed water channel. Particle velocities and fluid velocities in the presence of 340 μm and 500 μm glass beads, and 420 μm cellulose particles were measured by digital particle image velocimetry (DPIV). These particles were comparable to or slightly greater than the Kolmogorov lengthscale of the flow (320 μm). Although there was no apparent modification to the mean flow, an increase in turbulence intensities was greater in the streamwise than in the transverse direction, due to an increase in the turbulence energy in the streamwise direction. Particle concentration fluctuation increased the turbulence energy in the low-wave-number region, which means that the turbulence was modified by preferentially concentrated particles.

Original languageEnglish
Pages (from-to)18-25
Number of pages8
JournalNippon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B
Volume62
Issue number593
DOIs
Publication statusPublished - 1996 Jan 1

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanical Engineering

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