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Environmental Fluid Mechanics

, Volume 16, Issue 2, pp 401–412 | Cite as

Growth and damping of interfacial waves on a diffuse interface

  • Meysam Fazeli
  • Mirmosadegh Jamali
  • Gregory A. Lawrence
  • Brian Seymour
Original Article

Abstract

The resonant interaction of surface and internal waves produces a nonlinear mechanism for energy transfer among wave components in oceans, lakes, and estuaries. In many field situations, the stratification may be well approximated by a two-layer fluid with a diffuse interface. The growth and damping rates of sub-harmonic interfacial waves generated by a surface wave through a three-wave resonant interaction are measured in the laboratory. These measurements are compared with theoretical predictions. A diffuse interface reduces the damping rate and increases the growth rate. The predicted growth rate provides excellent comparison with the laboratory measurements. The inclusion of the effects of a diffuse interface significantly improve the comparison.

Keywords

Internal waves Surface wave Interaction Resonance Two-layer fluid Damping Diffuse interface Laboratory experiments 

Notes

Acknowledgments

M. Fazeli and M. Jamali acknowledge the support for this work from Sharif University of Technology. G. Lawrence is grateful for the support of a Canada Research Chair. B. Seymour received funding from Natural Sciences and Engineering Research Council of Canada under Grant A9117.

Supplementary material

Supplementary material 1 (AVI 6356 kb)

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Copyright information

© Springer Science+Business Media Dordrecht 2015

Authors and Affiliations

  • Meysam Fazeli
    • 1
  • Mirmosadegh Jamali
    • 1
  • Gregory A. Lawrence
    • 2
  • Brian Seymour
    • 3
  1. 1.Department of Civil EngineeringSharif University of TechnologyTeheranIran
  2. 2.Department of Civil EngineeringUniversity of British ColumbiaVancouverCanada
  3. 3.Department of MathematicsUniversity of British ColumbiaVancouverCanada

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