On the effect of Reynolds number for flow past three side-by-side square cylinders for unequal gap spacings

2014 ◽  
Vol 19 (1) ◽  
pp. 233-247 ◽  
Author(s):  
Hamid Rahman ◽  
Shams-Ul-Islam ◽  
Chao Ying Zhou ◽  
Tanvir Kiyani ◽  
Suvash C. Saha
Keyword(s):  
Reynolds Number ◽  
Square Cylinders ◽  
Flow Past ◽  
Gap Spacings

scholarly journals Effect of Reynolds numbers on flow past four square cylinders in an in-line square configuration for different gap spacings

2014 ◽  
Vol 28 (2) ◽  
pp. 539-552 ◽  
Author(s):  
Waqas Sarwar Abbasi ◽  
Shams-Ul-Islam ◽  
Suvash C. Saha ◽  
Yuan Tong Gu ◽  
Zhou Chao Ying
Keyword(s):  
Reynolds Numbers ◽  
Square Cylinders ◽  
Flow Past ◽  
Gap Spacings ◽  
Four Square ◽  
Square Configuration

Numerical study of flow past oscillatory square cylinders at low Reynolds number

2019 ◽  
Vol 75 ◽  
pp. 286-299 ◽  
Author(s):  
Felipe A. González ◽  
Jorge A. Bustamante ◽  
Marcela A. Cruchaga ◽  
Diego J. Celentano
Keyword(s):  
Reynolds Number ◽  
Numerical Study ◽  
Low Reynolds Number ◽  
Square Cylinders ◽  
Flow Past ◽  
Low Reynolds

Effects of Corner Cutoffs on Flow Past Two Square Cylinders in a Tandem Arrangement

2012 ◽  
Author(s):  
Y. T. Krishne Gowda ◽  
H. V. Ravindra ◽  
C. K. Vikram
Keyword(s):  
Reynolds Number ◽  
Pressure Distribution ◽  
Strouhal Number ◽  
Vortex Shedding ◽  
Lift Coefficient ◽  
Two Dimensional ◽  
Square Cylinder ◽  
Tandem Arrangement ◽  
Square Cylinders ◽  
Flow Past

Flow past the two square cylinders with and without corner modification in a tandem arrangement has been simulated using a CFD code FLUENT. A Reynolds number of 100 and pitch to perimeter ratios (PPR) of 2,4 and 6 are considered for the investigation. The flow is assumed to be two dimensional unsteady and incompressible. The obtained results are presented in the form of streamlines, pressure distribution, monitored velocity, lift coefficient and Strouhal number. Results indicate, in case of chamfered and rounded corners, there is decrease in the wake width and thereby the lift values. For the square cylinders of same perimeters with and without corner modification, the size of the eddy and the monitored velocity in between the square cylinders increases with increase in PPR. Frequency of vortex shedding is same in between the cylinders and in the downstream of the cylinder. Frequency of vortex shedding decreases with the introduction of second cylinder either in the upstream or downstream of the first cylinder. The lift coefficient of square cylinder with corner modification decreases but Strouhal number increases when compared with a square cylinder without corner modification.

scholarly journals Simulation of Flexible Fibre Particle Interaction with a Single Cylinder

Processes ◽  
2021 ◽  
Vol 9 (2) ◽  
pp. 191
Author(s):  
Naser Hamedi ◽  
Lars-Göran Westerberg
Keyword(s):  
Reynolds Number ◽  
Shear Flow ◽  
Fibre Orientation ◽  
Flow Direction ◽  
Particle Interaction ◽  
Orientation Angle ◽  
Factors Affecting ◽  
Single Cylinder ◽  
Flow Past ◽  
Fibre Suspension

In the present study, the flow of a fibre suspension in a channel containing a cylinder was numerically studied for a very low Reynolds number. Further, the model was validated against previous studies by observing the flexible fibres in the shear flow. The model was employed to simulate the rigid, semi-flexible, and fully flexible fibre particle in the flow past a single cylinder. Two different fibre lengths with various flexibilities were applied in the simulations, while the initial orientation angle to the flow direction was changed between 45° ≤ θ ≤ 75°. It was shown that the influence of the fibre orientation was more significant for the larger orientation angle. The results highlighted the influence of several factors affecting the fibre particle in the flow past the cylinder.

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