Mechanical Engineering Journal (Mar 2018)

Two-dimensional analysis of a simplified fluidic oscillator

  • Katsuya HIRATA,
  • Naoki YABUKI,
  • Kazuki UMEMURA,
  • Tatsuya INOUE,
  • Hirohisa WAKISAKA,
  • Hirochika TANIGAWA

DOI
https://doi.org/10.1299/mej.17-00294
Journal volume & issue
Vol. 5, no. 2
pp. 17-00294 – 17-00294

Abstract

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In order to investigate a self-excited oscillatory phenomenon of a two-dimensional confined jet with a cylinder as a downstream target, the authors conduct two-dimensional numerical analyses based on vorticity ζ and stream function ψ using a finite-difference discretisation method. At first, confirming the reliability and accuracy of the present analyses, the authors examine two kinds of preliminary tests prior to the main test. Aa a result, the authors reveal (1) the two-dimensionality of the phenomenon by comparing computations with experiments, and (2) the importance and complexity of the upstream of the downstream target.

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