AM06-11-002 振動テイラークエット流れにおける波動成分のエネルギー散逸(境界層とせん断流・遷移(1),一般講演)

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  • AM06-11-002 Energy dissipation in wavy motion of oscillating Taylor-Couette flow

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We attempted a direct energy injection to a higher flow mode of Taylor-Couette flow by using modulated rotation of an inner cylinder. Wavy vortex flow (WVF) mode was chosen as target of the energy injection and then a characteristic frequency of WVF is set to a basic frequency of the modulated rotation. Ultrasonic velocity profiler (UVP) measured an instantaneous velocity profile of the flow under the modulated rotation, and influence of the modulation in the flow was investigated. The measurement of instantaneous velocity profile of axial and radial component of flow velocity showed that this method cannot increase energy of WVF mode but can change shape of spectrum sharp at frequency of wavy motion in WVF.

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