DEPENDENCIES OF BREAKING TYPE, BREAKING CRITERIA AND ENERGY DISSIPATION ON AMPLITUDE-PHASE FREQUENCY STRUCTURE OF WAVES
No. 36 (2018), Full Length Papers
No. 36 (2018)

DEPENDENCIES OF BREAKING TYPE, BREAKING CRITERIA AND ENERGY DISSIPATION ON AMPLITUDE-PHASE FREQUENCY STRUCTURE OF WAVES

Full Length Papers
https://doi.org/10.9753/icce.v36.papers.72
Published 2018-12-30
  • Sergey Kuznetsov
  • Yana Saprykina
  • Valentina Volkova
Sergey Kuznetsov
Yana Saprykina
Valentina Volkova
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Kuznetsov, S., Saprykina, Y., & Volkova, V. (2018). DEPENDENCIES OF BREAKING TYPE, BREAKING CRITERIA AND ENERGY DISSIPATION ON AMPLITUDE-PHASE FREQUENCY STRUCTURE OF WAVES. Coastal Engineering Proceedings, 1(36), papers.72. https://doi.org/10.9753/icce.v36.papers.72
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Abstract

Type of wave breaking - plunging or spilling - depends on symmetry of waves. The spilling waves are asymmetric against horizontal axis and are practically symmetric against vertical axis so the phase shift between first and second nonlinear harmonics (or biphase) is close to zero. The plunging breaking waves have larger asymmetry against vertical axis, (biphase is close to -pi/2), and near symmetric on horizontal axis (close to saw-toothed form). Non-linear wave transformation influences on depth-induced wave breaking. Breaking index depends on relation of wave energy in frequency range of second nonlinear harmonics to wave energy in frequency range of main harmonic and on biphase. The dissipation rate of spilling breaking waves energy quadratically depends on frequency, while in plunging breaking, this dependency is practically linear for all frequencies.
https://doi.org/10.9753/icce.v36.papers.72
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