AM06-11-004 円筒容器内の回転流れにおける自由表面のswitchingと層流-乱流転移(境界層とせん断流・遷移(1),一般講演)

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  • AM06-11-004 Relation between surface switching of rotating flow in a cylinder and the laminar-turbulent transition

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We study the surface shape of water in an open cylinder driven by constant rotation of the bottom. Around the critical Reynolds number for the laminar-turbulent transition, the surface deformation, which is of the order of the container size, shows an aperiodic switching phenomenon between an axisymmetric shape and a nonaxisymmetric shape. The flow characteristics is examined by flow visualization by Kalliroscope and velocity measurement by ultrasonic velocity profiler.

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