Simple model for undertow profile

Winyu Rattanapitikon, Tomoya Shibayama

Research output: Contribution to journalArticlepeer-review

20 Citations (Scopus)


Based on a re-analysis of the existing undertow models and the experimental results, a proper explicit model is proposed for computing undertow profile inside the surf zone. The model has been derived by using the eddy viscosity approach. The model is examined using published laboratory data from six sources covering small-scale and large-scale experiments, i.e. the experiments of Nadaoka et al. (1982), Hansen and Svendsen (1984), Okayasu et al. (1988), Cox et al. (1994), CRIEPI and SUPERTANK. The present undertow model is considerably simpler than most of existing models. Although the model is simple, it shows good agreement with the experimental results above the bottom boundary layer. The calculation is so simple that the undertow profile can be calculated by using a pocket calculator.

Original languageEnglish
Pages (from-to)1-30
Number of pages30
JournalCoastal Engineering Journal
Issue number1
Publication statusPublished - 2000 Mar
Externally publishedYes

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Modelling and Simulation
  • Ocean Engineering


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