Modelling Swell, High Frequency Spreading and Wave Breaking

Abstract

In 2001, we (1) (in collaboration with A.Pushkarev) improved and enhanced the Resio-Tracy code for the numerical solution of the Hasselmann's equation; (2) we elaborated (in collaboration with A.Dyachenko and O.Vasyliev) a new version of the exact Euler equation (Dyachenko's equations) for 2-dim potential flow of a fluid with free surface. A new version based on combination of Hamiltonian formalism and conformal mapping, makes possible an efficient use of the Fourier code; (3) we elaborated another code for solution of the MMT model and fulfilled the vast numerical and analytical study of this system. We found that the deviation from the weak-turbulent results can be explained by influence of the coherent structure (quasisolitons and collapses), which is inavoidable in the MMT model. We offered a modification of the MMT model, which demonstrate "restoring" of the weak-turbulent scenario.

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Document Details

Document Type
Technical Report
Publication Date
Sep 01, 2001
Accession Number
ADA395221

Entities

People

  • V. E. Zakharov

Organizations

  • University of Arizona

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Collapse
  • Conformal Mapping
  • Electrical Solitons
  • Equations
  • Euler Equations
  • Frequency
  • Gravity Waves
  • Information Operations
  • Inverse Scattering
  • Mathematics
  • Mechanical Phenomena
  • Mechanics
  • Ocean Waves
  • Simulations
  • Spectra
  • Three Dimensional
  • Waves

Fields of Study

  • Physics

Readers

  • Atmospheric Science / Meteorology, specifically Wind Wave Turbulence.
  • Computational Fluid Dynamics (CFD)
  • Computational Modeling and Simulation