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Quiescent core in turbulent channel flow with spanwise-uniform roughness | Journal of Fluid Mechanics
2+ week, 1+ day ago (367+ words) This study examines drag and outer-layer similarity in a rough-wall channel with spanwise-uniform bars at pitch-to-height ratios 6, 12 and 24, using direct numerical simulations at. The quiescent core (QC) is detected via kernel density estimation of the streamwise velocity probability density function…...