Turbulence modeling of a wave boundary layer on a rough bottom

Ahmad Sana, Hitoshi Tanaka, Suntoyo

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

The original k-ω model by Wilcox (WL) and two versions of blended k-ω/k-ε model, namely; Baseline (BSL) model and Shear Stress Transport (SST) model were applied to the wave boundary layers on a rough bottom. The model results were compared with the available experimental data. The three models show good agreement with the experimental data for velocity, turbulent kinetic energy and Reynolds stress. The SST model is superior in predicting shear velocity in one of the experimental cases. However, a detailed comparison revealed that SST model underestimates the friction factor for lower values of particle excursion length to roughness ratio, whereas, WL and BSL models showed good agreement with the experimental data. The results of this study would be useful for practicing engineers and researchers in choosing an appropriate model for calculating bottom shear stress.

Original languageEnglish
Pages (from-to)1572-1582
Number of pages11
JournalProceedings of the Coastal Engineering Conference
Publication statusPublished - 2009

Fingerprint

Boundary layers
Turbulence
boundary layer
turbulence
modeling
shear stress
Shear stress
bottom stress
Kinetic energy
kinetic energy
roughness
friction
Surface roughness
Friction
Engineers

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Ocean Engineering
  • Oceanography

Cite this

Turbulence modeling of a wave boundary layer on a rough bottom. / Sana, Ahmad; Tanaka, Hitoshi; Suntoyo.

In: Proceedings of the Coastal Engineering Conference, 2009, p. 1572-1582.

Research output: Contribution to journalArticle

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