'Periodica Polytechnica Budapest University of Technology and Economics'
Abstract
The purpose of this study was to explore the central core region of a plane turbulent Cou-
ette flow by means of large-eddy simulations. First it was demonstrated how accurately a
low Reynolds number flow could be simulated. After having verified the reliability of the
LES approach. simulations were performed at a substantially higher Re. It was observed
that the mean velocity exhibited a practically linear variation in the core region. The
extent of the core increased with Re, whereas the slope of the mean velocity profile was
significantly reduced