Measurements for turbulent channel flow containing microbubbles using PIV/LIF technique

Shigeki Nagaya, Koichi Hishida, Yoshiaki Kodama, Akira Kakugawa

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

It is known that local skin friction can be reduced by injecting microbubbles into a turbulent boundary layer. However, so far the mechanism of the reduction has never been understood. In the present study, the objective is to understand the characteristics of a turbulent flow field containing microbubbles with an experimental approach in order that the mechanism for the skin friction reduction is clearly elucidated. In order to measure the flow with the microbubbles, a combination of PIV and LIF methods is developed. Measurements are carried out for a horizontal channel flow with microbubbles by which the skin friction is reduced. Modifications of the wall turbulence due to the injection of the microbubbles are discussed.

Original languageEnglish
Title of host publicationFluids Engineering
PublisherAmerican Society of Mechanical Engineers (ASME)
Pages757-763
Number of pages7
ISBN (Print)0791836576, 9780791836576
DOIs
Publication statusPublished - 2002

Publication series

NameASME International Mechanical Engineering Congress and Exposition, Proceedings

Keywords

  • Bubble-flow interaction
  • PIV/LIF measurement
  • Skin friction reduction
  • Turbulence modification

ASJC Scopus subject areas

  • Mechanical Engineering

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