The unsteady flowfield past a two-dimensional(2D) square cylinder at Re=1.0 × 105 is predicted by Large Eddy Simulation(LES). Results of two-dimensional (2D) and three-dimensional(3D) computations are compared with results of previous experiments[1-4]. It is confirmed that the LES results based on 3D computation correspond very well with the experimental results, but the LES results based on 2D computation are different from those based on 3D computation as well as those based on experiments. Distributions of mean vorticity, vorticity fluctuations and turbulence terms in the mean vorticity equation are discussed in order to examine structural difference between the results of 2D and 3D LES computations.
|Number of pages||8|
|Journal||Journal of Wind Engineering and Industrial Aerodynamics|
|Publication status||Published - 1993 Dec|