AM06-11-001 テイラークエット流れにおける周方向運動の実験的研究(境界層とせん断流・遷移(1),一般講演)

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  • AM06-11-001 Experimental investigation on azimuthal motion of Taylor-Couette flow

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We attempted to investigate flow structures of Taylor-Couette Flow (TCF) at the azimuthal cross section by flow visualization using Kalliroscope flakes, which is platelet and can make share flow visible, and by image processing of the obtained image. It is confirmed that the established measurement technique can reproduce structure of the Taylor vortex. This technique is also applied to determine wavenumber and phase velocity of the azimuthal wave appearing in wavy vortex flow (WVF) mode at higher Reynolds number. Moreover, azimuthal flow structure of modulated wavy vortex flow (MWV) is clearly visualized and modulation component of MWV is detected by the image processing, which is Fourier analysis of temporal variation of brightness profile extracted from a movie of visualized flow.

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