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

Ahmad Sana; Abdul Razzaq Ghumman; Hitoshi Tanaka

doi:10.1016/j.oceaneng.2005.11.018

Back

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

Journal article

Peer reviewed

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

Ahmad Sana, Abdul Razzaq Ghumman and Hitoshi Tanaka

Ocean engineering, Vol.34(2), pp.320-326

01/02/2007

DOI: https://doi.org/10.1016/j.oceaneng.2005.11.018

Abstract

k–ε model

Oscillatory boundary layer

Shear stress

Turbulence model

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.

Metrics

1 Record Views

Details

Title: Modification of the damping function in the k–ε model to analyse oscillatory boundary layers
Creators - without role: Ahmad Sana - Sultan Qaboos University
Abdul Razzaq Ghumman - University of Engineering and Technology Taxila
Hitoshi Tanaka - Tohoku University
Publication Details: Ocean engineering, Vol.34(2), pp.320-326
Publisher: Elsevier Ltd
Identifiers: 9928942108331
Academic Unit: Qassim University
Language: English
Resource Type: Journal article