URANS simulation of flow over smooth topography
International Journal of Numerical Methods for Heat & Fluid Flow
ISSN: 0961-5539
Article publication date: 1 December 2001
Abstract
An Unsteady Reynolds‐Averaged Navier‐Stokes (URANS) equation method has been applied to compute the flow over two‐dimensional smooth topography and compared with conventional RANS and large‐eddy simulation (LES) results. The URANS calculation with sufficient grid resolution near solid surface and an appropriate near‐wall model has been shown to simulate much of the large‐scale unsteadiness and some of the turbulent motion for flows with and without separation. Although the results with unadjusted model constants do not show an overwhelming improvement over a standard two‐equation model, it is demonstrated that it may be improved and, more importantly, can be generalized to a new simulation technique by refining the model, considering such factors as grid‐dependent length scales and by making a three‐dimensional calculation.
Keywords
Citation
Nakayama, A. and Miyashita, K. (2001), "URANS simulation of flow over smooth topography", International Journal of Numerical Methods for Heat & Fluid Flow, Vol. 11 No. 8, pp. 723-745. https://doi.org/10.1108/09615530110409394
Publisher
:MCB UP Ltd
Copyright © 2001, MCB UP Limited