Application of Near-wall models along with large eddy simulation method for free-surface flow over backward-facing step is investigated. Smagorinsky and Dynamic sub-grid scale models are used in LES code. Four different near-wall models have been developed based on advanced Werner-Wengle model. The simulation results are compared with experimental data of Nakagawa and Nezu (1987). The comparison shows a relatively good agreement for time-averaged velocities and also it shows high accuracy in computation of reattachment point. Near-wall models have very close results in whole domain except the reattachment region and this has been shown by comparison of viscose sublayer thickness that is an important parameter of these models. Although the dynamic sub-grid scale model is more complicated than standard model, both models have shown very close results in present case study.
Shamloo, H., Bozorgian, H., Pishgoo, N., & Taghizadeh, S. (2012). Application of Near-wall Models Along with LES to Free Surface and Separated Flows. Journal of Hydraulics, 7(3), 43-54. doi: 10.30482/jhyd.2012.85348
MLA
H. Shamloo; H. Bozorgian; N. Pishgoo; S. Taghizadeh. "Application of Near-wall Models Along with LES to Free Surface and Separated Flows". Journal of Hydraulics, 7, 3, 2012, 43-54. doi: 10.30482/jhyd.2012.85348
HARVARD
Shamloo, H., Bozorgian, H., Pishgoo, N., Taghizadeh, S. (2012). 'Application of Near-wall Models Along with LES to Free Surface and Separated Flows', Journal of Hydraulics, 7(3), pp. 43-54. doi: 10.30482/jhyd.2012.85348
VANCOUVER
Shamloo, H., Bozorgian, H., Pishgoo, N., Taghizadeh, S. Application of Near-wall Models Along with LES to Free Surface and Separated Flows. Journal of Hydraulics, 2012; 7(3): 43-54. doi: 10.30482/jhyd.2012.85348