Title:

Three-zonal Wall Function for k-e Turbulence Models

Creator:

M. Chmielewski

Contributor:

M. Gieras

Tags:

wall functions, turbulence modeling, near-wall treatment

Abstract:

Most commercially available wall functions for k-e turbulence models base on the two-zonal near-wall flowdivision assumption. Viscous and log-law sublayers are distinguished. In this article the three-zonal wall function conceptwith a buffer sublayer is developed. The aim of this new wall function is to improve the mean streamwise U+ velocity profile.The proposed wall function is validated on backward-facing step experimental data. Physical implications of the modelperformance are also discussed.

Date created:

2013.02.18

Date accepted:

2013.04.02

Date issued:

2013.05.22

Format:

application/pdf