The Proceedings of the Fluids engineering conference
Online ISSN : 2424-2896
2016
Session ID : 0508
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Frequency Analysis of Chaotic Flow in Transition to Turbulence in Taylor Couette System of Low Aspect Ratio
Kouhei TAKASEYoshihiko OISHIHideki KAWAIHiroshige KIKURAHideki MURAKAWA
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Abstract

Taylor-Couette vortex flow with a low-aspect-ratio has characteristics such as the different vortex structure, because of a boundary layer of the top and bottom wall and the acceleration of the inner cylinder. In a case of large aspect ratio of Taylor Couette flow, the mechanism of the vortex like a chaotic flow has been shown by Fenstermacher and Takeda. The purpose of this study is to understand the flow mechanism with Taylor Couette system of the low-aspect-ratio using an ultrasound measurement and a numerical simulation. In this report, we mainly analyzed the process of transition to turbulent flow by using a spectra analysis in a radial and an axial direction.

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© 2016 The Japan Society of Mechanical Engineers
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