This study focuses on the turbulent channel flow over three-dimensional wavy walls. Through temporal-spatial averaging decomposition, the momentum flux and kinetic energy transfers by mean, time-averaged, dispersive, and turbulent motions are revealed. We find a notable correlation between dispersive shear stress and vorticity enhancement. Another finding is that the dispersion-turbulence exchange significantly contributes to turbulent kinetic energy production.
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Zhang et al. (2024) studied this question.
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