Turbulent Flow Behind Cylinder Arrays

The flow behind nine different arrays of cylinders is experimentally investigated via Particle Image Velocimetry (PIV) at a Reynolds number of Re≈100 based on the diameter of the cylinders. Each array consists of a column of four cylinders in front and three in the rear. The horizontal distance between the two columns and the vertical distance between the cylinders within each column are varied for H/D= 2; 4; 8 and V/D= 2; 4; 6, resulting in nine different arrays denoted as mVnH, where m corresponds to V/D and n stands for H/D. The PIV measurements are conducted for 15 s at 200 Hz frequency. For each data set, the two velocity components v and u, along with the planar coordinates x and y, are avialable. All velocity values are in mm/s and the diameter of cylinders are D = 1mm. Coordinates are in mm and their origin is placed in the bottom up stream corner in the measurement plane.

The approximate coordinates of the central cylinder in the second column are as follows:2V2H=(-1.0, 7.8), 2V4H=(-1.0, 7.8), 2V8H=(-1.0, 8.0), 4V2H=(-0.7, 8.2), 4V4H=(-1.0, 8.0), 4V8H=(-1.1, 8.1), 6V2H=(-1.2, 13.9), 6V4H=(-1.1, 13.4), 6V8H=(-1.1, 15.0) 

Data structure: x, y, u, v

For more information please see the published article in this regard:https://doi.org/10.1063/5.0155102Flow structure and dynamics behind cylinder arrays at Reynolds number ∼100, M. Sharifi Ghazijahani, C. Cierpka, Physics of Fluids 35, 067125 (2023)