TY - JOUR
T1 - A general inflow turbulence generator for large eddy simulation
AU - Huang, S. H.
AU - Li, Q. S.
AU - Wu, J. R.
PY - 2010/10
Y1 - 2010/10
N2 - This paper presents a general inflow turbulence generator for numerical simulation of a spatially correlated turbulent flow field. The novel inflow turbulence generator is developed based on the discretizing and synthesizing random flow generation (DSRFG) technique that is proved to be able to generate a fluctuating turbulent flow field satisfying any given spectrum. Then, the techniques of aligning and remapping are incorporated in the inflow turbulence generator for generation of an inhomogeneous and anisotropic turbulent flow field following arbitrary target spectra in three orthogonal directions. The performance of the present inflow turbulence generator is compared with that of Smirnov's random flow generation (RFG) method. Detailed numerical studies show that the proposed inflow turbulence generator can strictly guarantee divergence-free condition without any additional improving step and synthetically generate inflows satisfying prescribed spatial anisotropy and correlation conditions. It is demonstrated through numerical examples that the inflow turbulence generator developed in this study is an effective tool for generation of a spatially correlated turbulent flow field for large eddy simulation (LES). © 2010 Elsevier Ltd.
AB - This paper presents a general inflow turbulence generator for numerical simulation of a spatially correlated turbulent flow field. The novel inflow turbulence generator is developed based on the discretizing and synthesizing random flow generation (DSRFG) technique that is proved to be able to generate a fluctuating turbulent flow field satisfying any given spectrum. Then, the techniques of aligning and remapping are incorporated in the inflow turbulence generator for generation of an inhomogeneous and anisotropic turbulent flow field following arbitrary target spectra in three orthogonal directions. The performance of the present inflow turbulence generator is compared with that of Smirnov's random flow generation (RFG) method. Detailed numerical studies show that the proposed inflow turbulence generator can strictly guarantee divergence-free condition without any additional improving step and synthetically generate inflows satisfying prescribed spatial anisotropy and correlation conditions. It is demonstrated through numerical examples that the inflow turbulence generator developed in this study is an effective tool for generation of a spatially correlated turbulent flow field for large eddy simulation (LES). © 2010 Elsevier Ltd.
KW - Computational fluid dynamics
KW - Computational wind engineering
KW - Large eddy simulation
KW - Random flow generation
UR - http://www.scopus.com/inward/record.url?scp=77954958916&partnerID=8YFLogxK
UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-77954958916&origin=recordpage
U2 - 10.1016/j.jweia.2010.06.002
DO - 10.1016/j.jweia.2010.06.002
M3 - RGC 21 - Publication in refereed journal
SN - 0167-6105
VL - 98
SP - 600
EP - 617
JO - Journal of Wind Engineering and Industrial Aerodynamics
JF - Journal of Wind Engineering and Industrial Aerodynamics
IS - 10-11
ER -