Experimental study of a three-dimensional large-scale structure in a reciprocating oscillatory flow

Mikio Hino, Yu Fukunishi, Yan Meng

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)

Abstract

An experimental investigation has been conducted on the large-scale structure of the reciprocating oscillatory turbulent flow in a rectangular duct. Using hot-wire anemometers and conditional sampling technique, we found that the Reynolds stress generated explosively in the decelerating phase, a characteristic feature of the flow, is caused by the three-dimensional large-scale structure. These structures are revealed to be a pair of counter-rotating fluid motions which change their form gradually as the phase-averaged velocity distribution changes. Phase differences of the turbulence intensity distribution in an oscillatory flow are found to take place in accordance with the generation-growth-decay process of the large-scale structure.

Original languageEnglish
Pages (from-to)261-275
Number of pages15
JournalFluid Dynamics Research
Volume6
Issue number5-6
DOIs
Publication statusPublished - 1990 Dec

ASJC Scopus subject areas

  • Mechanical Engineering
  • Physics and Astronomy(all)
  • Fluid Flow and Transfer Processes

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