Modeling undertow due to random waves

Pham Thanh Nam, Hocine Oumeraci, Magnus Larson, Hans Hanson

Research output: Contribution to journalArticlepeer-review

3 Citations (SciVal)

Abstract

A numerical model of undertow due to random waves is developed. The model includes three sub-models: (i) a model for multi-directional and multi-frequency random wave transformation, (ii) a surface roller evolution model, and (iii) a model for calculating the vertical distribution and the mean value of the undertow velocity. The calculation of wave trough level is performed based on a theory for the wave asymmetry. The model was successfully validated against small- and large-scale laboratory experiments. Thus, the model is expected to provide reliable input for the modeling of sediment transport and morphological change due to waves and currents.
Original languageEnglish
Pages (from-to)1209-1219
JournalOcean Dynamics
Volume64
Issue number8
DOIs
Publication statusPublished - 2014

Subject classification (UKÄ)

  • Water Engineering

Keywords

  • Undertow
  • Random waves
  • Surface roller
  • Eddy viscosity
  • Wave energy
  • dissipation
  • Wave asymmetry

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