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Wind tunnel measurements of turbulent boundary layer flows over arrays of ribs and cubes

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Figure

Fig. 1 Schematic of wind tunnel (a) and configuration of roughness element. b AR = 1/2, c AR = 1/3, d h:2l and e h:6l
Fig. 1array of roughness element are employed in the wind b–e. A total of eleven configurations of cube-type tunnel measurements.
Table 1 Parameters in the turbulent boundary layers over different rough surfaces
Fig. 3 Comparison of shown in (a roughness length z0, c displacement height d and d boundary layer thickness δ plotted against drag coefficient Cd
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