Abstract
This work attempts to analyze the shear and normal stress components of a grid downstream under the influence of a rigid boundary. The correlation coefficient of Reynolds stresses is analyzed to inspect the fraction of turbulent motions contributing to fluctuating momentum flux. The mean turbulence dissipation rate is estimated downstream of the grid for three different mesh sizes and compared to a case without a grid. Based on the analysis, it is found that the flow approaches isotropy in the main flow region. In contrast, near the boundary, some residual inhomogeneity is observed, even at the far-field region of the grid. The Reynolds shear stress peak value decreases with the variation in mesh size of the grid. The negative and positive values of the stress depend on the spatial configuration in a vertical direction, occurrence of locations of the intersection of wires, and hole openings of different mesh sizes of the grid. The paper also analyzed the Kolmogorov complexity for various mesh sizes under the consideration of rigid boundaries.
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