TY - JOUR
T1 - A hybrid LES/RANS approach using an anisotropy-resolving algebraic turbulence model
AU - Abe, K.
N1 - Funding Information:
This research was partially supported by Grant-in-Aids for Scientific Research, No. 15360450, No. 15106013, sponsored by the Ministry of Education, Culture, Sports, Science and Technology, Japan. The author wishes to express his appreciation to Professor M.A. Leschziner of Imperial College of Science, Technology and Medicine (IC), London, UK for the support in using the STREAM code. The author also wishes to give his thanks to Mr. L. Temmerman of IC for his valuable discussion on this topic.
PY - 2005/4
Y1 - 2005/4
N2 - In order to derive a possible path for developing a large eddy simulation (LES) applicable to high Reynolds-number turbulent flows, a hybrid approach connecting LES with the Reynolds-averaged Navier-Stokes (RANS) modeling in the near-wall region is studied. In contrast to most of the previous studies that have employed linear eddy-viscosity models, in this study, an advanced non-linear eddy-viscosity model is introduced to resolve the near-wall stress anisotropy more correctly. To investigate the model performance in detail, the proposed model is applied to fully-developed plane channel flows with various grid resolutions and at various Reynolds numbers. The grid resolution in the streamwise (x) and spanwise (z) directions ranges from 101 to 103 in wall unit (Δx+ or Δz+), while ywall+∼1 in the wall-normal (y) direction. The present model provides encouraging results for further development of this kind of hybrid LES/RANS model.
AB - In order to derive a possible path for developing a large eddy simulation (LES) applicable to high Reynolds-number turbulent flows, a hybrid approach connecting LES with the Reynolds-averaged Navier-Stokes (RANS) modeling in the near-wall region is studied. In contrast to most of the previous studies that have employed linear eddy-viscosity models, in this study, an advanced non-linear eddy-viscosity model is introduced to resolve the near-wall stress anisotropy more correctly. To investigate the model performance in detail, the proposed model is applied to fully-developed plane channel flows with various grid resolutions and at various Reynolds numbers. The grid resolution in the streamwise (x) and spanwise (z) directions ranges from 101 to 103 in wall unit (Δx+ or Δz+), while ywall+∼1 in the wall-normal (y) direction. The present model provides encouraging results for further development of this kind of hybrid LES/RANS model.
KW - Detached eddy simulation
KW - Hybrid LES/RANS model
KW - Large eddy simulation
KW - Near-wall anisotropy
KW - Non-linear eddy-viscosity model
UR - https://www.scopus.com/pages/publications/13844314862
UR - https://www.scopus.com/pages/publications/13844314862#tab=citedBy
U2 - 10.1016/j.ijheatfluidflow.2004.08.009
DO - 10.1016/j.ijheatfluidflow.2004.08.009
M3 - Article
AN - SCOPUS:13844314862
SN - 0142-727X
VL - 26
SP - 204
EP - 222
JO - International Journal of Heat and Fluid Flow
JF - International Journal of Heat and Fluid Flow
IS - 2
ER -