Wavelet Analysis on Water Surface Ripples in Turbulent Open-Channel Flows

• MIYAMOTO Hitoshi

  神戸大学

Bibliographic Information

Other Title

• A303 開水路乱流における水面波紋のウェーブレット解析

Abstract

Water surface fluctuations in turbulent open-channel flows are analyzed by using wavelet transforms. The data analyzed in this paper are water surface profiles measured by a simultaneous image measurement of velocity vectors and the water depth. The continuous wavelet transform with the Mexican Hat wavelet is applied to the water surface fluctuations for detecting their characteristics. The advection velocity, spatial scale, frequency of the water surface fluctuations are successfully extracted through the transform and are discussed with respect to the Froude number dependence.

Journal

• Journal of the Visualization Society of Japan

  Journal of the Visualization Society of Japan 26 (Supplement1), 257-258, 2006

  The Visualization Society of Japan

Keywords

• Wavelet transform
• Water surface fluctuation
• Turbulent open-channel flow

Details

• CRID: 1390001204618667648
• NII Article ID: 10017995516
• NII Book ID: AA11907562
• DOI: 10.3154/jvs.26.supplement1_257
• ISSN: 1884037X
• ISSN: 09164731
• Text Lang: ja
• Data Source:
  • JaLC
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed