Characteristics of Circular Cylinders in Turbulent Flows

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概要

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• The effect of a free-stream turbulence of high intensity on the flow past a rigid circular cylinder was experimentally studied in a Reynolds-number range 7.9×10^3〜5.4×l0^4. Square-meshed grids were used to produce homogeneous turbulent-flow fields. The intensity and scale of a turbulent flow in which the cylinder was immersed were varied by positioning the cylinder at various locations downstream of the grid. Measurements were made of the time-averaged drag coefficient, Strouhal number of the vortex shedding, spanwise correlation length and length of the vortex formation region in the wake of the cylinder. These properties of flow around the cylinder were found to be considerably different from those measured in a smooth flow.

• 一般社団法人日本機械学会の論文

著者

• Suzuki Yasuhiro

  Faculty Of Engineering Hokkaido University

• Kiya Masaru

  Faculty Of Engineering Hokkaido Univ.

• Arie Mikio

  Faculty Of Engineering Hokkaido University

• HAGINO Mitsutoshi

  Faculty of Engineering, Hokkaido University

• TAKAHASHI Kyogo

  RIKO Co. Ltd. Hanamaki Iwate.

• Kiya Masaru

  Faculty Of Engineering Hokkaido Technology

• Hagino Mitsutoshi

  Faculty Of Engineering Hokkaido University

• Suzuki Yasuhiro

  Faculty Of Engineering Hokkaido Univ.

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• Flow over Rectangular Cylinders Immersed in a Turbulent Boundary Layer : Part 1, Correlation between Pressure Drag and Boundary-Layer Characteristics
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• Flow around Circular Cylinders of Finite Height Placed Vertically in Turbulent Boundary Layers

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