Wavelet transform analysis of unsteady turbulence and turbulent burning velocity in a constant-volume vessel

Zhong Zhang, Eiji Tomita, Sadami Yoshiyama, Yoshisuke Hamamoto, Hiroaki Kawabata

Research output: Contribution to journalArticle

3 Citations (Scopus)


The determination of the turbulence parameters is a difficult and important problem for combustion analysis. In this study, we propose a newly developed method of defining unsteady turbulence intensity in order to examine the relation between the turbulence characteristics and the burning velocity of turbulent flame propagating in homogeneous fuel-air mixture. We use the discrete wavelet transform, which is a time-frequency analysis method for calculating unsteady turbulence intensity and use a complex-type mother wavelet, the RI-Spline wavelet as the mother wavelet. Our experiments demonstrate the merits of our approach.

Original languageEnglish
Pages (from-to)608-615
Number of pages8
JournalJSME International Journal, Series B: Fluids and Thermal Engineering
Issue number4
Publication statusPublished - Nov 2001



  • Burning velocity
  • Internal combustion engine
  • Turbulence
  • Turbulent burning velocity
  • Unsteady turbulence
  • Wavelet transform

ASJC Scopus subject areas

  • Mechanical Engineering
  • Physical and Theoretical Chemistry
  • Fluid Flow and Transfer Processes

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