Modification of the damping function in the k-ε model to analyse oscillatory boundary layers

Ahmad Sana, Abdul Razzaq Ghumman, Hitoshi Tanaka

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

A simple relationship has been developed between the wall coordinate y+ and Kolmogorov's length scale using direct numerical simulation (DNS) data for a steady boundary layer. This relationship is then utilized to modify two popular versions of low Reynolds number k-ε model. The modified models are used to analyse a transitional oscillatory boundary layer. A detailed comparison has been made by virtue of velocity profile, turbulent kinetic energy, Reynolds stress and wall shear stress with the available DNS data. It is observed that the low Reynolds number models used in the present study can predict the boundary layer properties in an excellent manner.

Original languageEnglish
Pages (from-to)320-326
Number of pages7
JournalOcean Engineering
Volume34
Issue number2
DOIs
Publication statusPublished - Feb 2007

Keywords

  • k-ε model
  • Oscillatory boundary layer
  • Shear stress
  • Turbulence model

ASJC Scopus subject areas

  • Ocean Engineering
  • Environmental Engineering

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