Abstract
In this study, experimental results of flow past two horizontal cylinders — one above the other are discussed. The research was conducted using experimental data collected on a rough-bed with double cylinders of three different sizes. First, fundamental features such as streamwise velocity, Reynolds shear stress (RSS), and turbulence intensity profiles have been explained at various downstream positions with respect to the cylinders; next, some advanced analysis such as correlation coefficient, stress anisotropy, and dissipation anisotropy have been presented and compared location-wise. To demonstrate anisotropy, stress, dissipation tensors along with anisotropic invariant map and function are plotted and thoroughly analyzed. Lastly, A different diagrammatic representation of the level of anisotropy of turbulence is obtained by incorporating the eigenvalues of the Reynolds stress tensor, namely barycentric coordinates.© 2017 ElsevierInc.Allrightsreserved.
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