Two dimensional unsteady flow past a square cylinder: Influence of proximal plane wall and power-law index

2021 ◽  
Vol 240 ◽  
pp. 109896
Author(s):  
Akhileshwar Mani Tripathi ◽  
Subrata Kumar Ghosh ◽  
Sudipto Sarkar
Keyword(s):  
Unsteady Flow ◽  
Power Law ◽  
Plane Wall ◽  
Two Dimensional ◽  
Square Cylinder ◽  
Flow Past ◽  
Power Law Index

Prediction of Unsteady Flow around a Square Cylinder Using RANS

2011 ◽  
Vol 52-54 ◽  
pp. 1165-1170
Author(s):  
Fu You Xu ◽  
Xu Yong Ying ◽  
Zhe Zhang
Keyword(s):  
Standard Model ◽  
Unsteady Flow ◽  
Flow Characteristics ◽  
Turbulence Models ◽  
Surface Flow ◽  
Two Dimensional ◽  
Square Cylinder ◽  
Complex Flow ◽  
Near Surface ◽  
Sst Model

The results of unsteady Reynolds averaged Navier-Stokes (URANS) simulations of flow around a square cylinder using two-dimensional hybrid meshes were presented in this paper. The first part examined the accuracy of various RANS turbulence models, i.e. the standard model, RNG model, realizable model, standard model, SST model, and RSM, by comparing their results with available experimental data. Despite the limits imposed by the RANS approach and the relatively inexpensive two-dimensional computations, the main features of this complex flow can be predicted reasonably well. Among the computations using various RANS models compared here, the SST model shows the best agreement with the experiment. The second part investigated the effects of corner cutoffs on unsteady flow characteristics around a square cylinder by using the SST model. Especially the detailed near-surface flow structure around the cylinder was focused on, aiming at giving an explanation for the drastic modification of the aerodynamic characteristics as the corner shape is slightly changed.

2-D Computations of unsteady flow past a square cylinder with the Baldwin-Lomax Model

1994 ◽  
Vol 8 (7) ◽  
pp. 663-680 ◽  
Author(s):  
G.B. Deng ◽  
J. Piquet ◽  
P. Queutey ◽  
M. Visonneau
Keyword(s):  
Unsteady Flow ◽  
Square Cylinder ◽  
Flow Past
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