Large eddy simulation of hydraulic characteristics of flow around two parallel circular cylinders

2011 ◽  
Author(s):  
Guiwen Rong ◽  
Wenli Wei
Keyword(s):  
Large Eddy Simulation ◽  
Circular Cylinders ◽  
Hydraulic Characteristics ◽  
Eddy Simulation ◽  
Large Eddy

Large Eddy Simulation of Hydraulic Characteristics of Flow around Two Parallel Circular Cylinders

2012 ◽  
Vol 468-471 ◽  
pp. 1862-1865
Author(s):  
X.J. Zhao ◽  
W.L. Wei ◽  
Xi Wang ◽  
Ming Qin Liu
Keyword(s):  
Large Eddy Simulation ◽  
Turbulent Flows ◽  
Circular Cylinders ◽  
Hydraulic Characteristics ◽  
Step Method ◽  
Fractional Step Method ◽  
Eddy Simulation ◽  
Large Eddy ◽  
Engineering Problems ◽  
Total Velocity

large eddy simulation cooperated with a physical fractional-step method was applied to simulate steady flow around two parallel circular cylinders. The total velocity vectors, pressure contours and vorticity magnitude are obtained. The modeling results conform to physical law, and show that the large eddy simulation theory has powerful capacity in simulation of microstructures of turbulent flows, and can be widely applied to the solution of real engineering problems.

Large Eddy Simulation of Flow around Circular Cylinders on Structured and Unstructured Grids

1998 ◽  
pp. 319-338 ◽  
Author(s):  
J. Fröhlich ◽  
W. Rodi ◽  
Ph. Kessler ◽  
S. Parpais ◽  
J. P. Bertoglio ◽  
...  
Keyword(s):  
Large Eddy Simulation ◽  
Unstructured Grids ◽  
Circular Cylinders ◽  
Eddy Simulation ◽  
Large Eddy

Large Eddy Simulation of Gravity Current Flow Past a Circular Cylinder Using Immersed Boundary Method

2015 ◽  
Author(s):  
Jae Hwan Wang ◽  
Hyun Sik Yoon
Keyword(s):  
Circular Cylinder ◽  
Large Eddy Simulation ◽  
Gravity Current ◽  
Numerical Approach ◽  
Gravity Currents ◽  
Hydrodynamic Forces ◽  
Circular Cylinders ◽  
Immersed Boundary ◽  
Eddy Simulation ◽  
Large Eddy

We investigated the flow of gravity currents past circular cylinders above the smooth bed. In order to simulate the gravity current interacting with cylinder, large eddy simulation (LES) coupled with a direct forcing/fictitious domain (DF/FD) method was employed. The hydrodynamic forces induced by the gravity current on a circular cylinder and the flow features were investigated according to a gap distance from location below the cylinder to the bed and Reynolds number. When the gravity current encounters the circular cylinder, the maximum drag force occurs regardless of gap distance. In addition, Von Karman vortex shedding emerges behind the circular cylinder for larger gap distance. In this regard, the results can be divided into impact, transient and quasi-steady stages based on the characteristics of the hydrodynamic forces varying with time, which is consistent with previous observations. Consequently, our numerical approach well simulated the flow of gravity currents past circular cylinders in good agreement with those of previous studies.

Large-eddy simulation of the flow past both finite and infinite circular cylinders at Re = 3900

2015 ◽  
Vol 27 (2) ◽  
pp. 195-203 ◽  
Author(s):  
Hui Zhang ◽  
Jian-min Yang ◽  
Long-fei Xiao ◽  
Hai-ning Lü
Keyword(s):  
Large Eddy Simulation ◽  
Circular Cylinders ◽  
Eddy Simulation ◽  
Flow Past ◽  
Large Eddy
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