Flow Past a Square Cylinder: Test Case LES2

Prediction of wind environment and thermal comfort at pedestrian level in urban area

“…grid filter and test filter [5]. The details of this model are available in many papers [6][7][8][9][10][11][12][13].…”

“…It was affirmed in 1990s that the prediction accuracy of the static type Smagorinsky model could be improved by the DS model [8][9][10][11]. However, computation based on the DS model was not stable as the fluctuation of C was too large.…”

A Dynamic One-Equation Subgrid Model for Simulation of Flow around a Square Cylinder

“…Calculations are carried out for two resolutions of In the present study, the global results (time-and spanwise-averaged values) of these two cases are compared with the experimental ones [12,29,2,15,14,13,17] and numerical results presented at the LES Workshop [22] and LES2 exercise [30]. A summary of the global results is provided in Table 1.…”

“…This finding shows that a part of difference between experiment and numerical simulation for the recovery of the centerline velocity and , which was also noted in Refs. [22,30], is due to using a poor resolution.…”

“…The same flow was considered as test case LES2 at the First ERCOFTAC Workshop on Direct and Large Eddy Simulation in March 1994. Seven groups took part in LES2 exercise and the results of this exercise were reported by Voke [30]. The reason for the focus on LES for the study of flow around bluff bodies has to do with poor results when using statistical turbulence models.…”