Overset LES with Application to a Turbulent Channel Flow
Fluid Dynamics
2015-03-25 v1
Abstract
In this contribution, we present an application of a novel perturbation approach (denoted as an Overset approach) to a generic turbulent channel flow. The derivation of the governing equations (the Non-Linear Perturbation Equations extended with fluctuating viscous terms) is presented as well as subgrid-scale modeling aspects which results in the Overset LES (OLES) method. The application of the Overset method is illustrated with a generic fully developed turbulent channel flow, the results of which show excellent agreement with reference Direct Numerical Simulation data. The ability of the overset method to correct for an imperfect background flow is furthermore shown.
Cite
@article{arxiv.1503.07067,
title = {Overset LES with Application to a Turbulent Channel Flow},
author = {R. A. D. Akkermans and R. Ewert and N. Buchmann and J. Dierke and P. Bernicke},
journal= {arXiv preprint arXiv:1503.07067},
year = {2015}
}
Comments
12 pages, 6 figures