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Published 2008 | public
Report

A model for "dynamic roughness" in turbulent channel flow

Abstract

A simple model for roughness elements with a time-varying height was used to investigate the effect of time-dependent, "dynamic" roughness on wall-bounded flow. Temporally varying wall velocities were specified in a turbulent channel flow simulation in order to model the effect of introducing a roughness time scale in addition to a distribution of roughness length scales.

Additional details

Created:
August 19, 2023
Modified:
October 18, 2023