Abstract
A transition to turbulence occurs in a radial liquid sheet flow. A radial liquid film flow is generated by a water discharge from a thin cylindrical gap, which is constructed by the end of a circular pipe and the flat surface of a disk. Sudden laminar-turbulent transition occurs in the liquid sheet when the Reynolds number exceeds a critical value, Resulting both in the perforation and the disintegration of the sheet under extremely high Reynolds number. The configuration of the liquid changes from the liquid sheet into ligaments and drops in the disintegration process. The configuration is measured by photo-sensing. LDV measurement synchronized with photography and photo-sensing reveals that the production process of small drops.
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