Circulatory Streaming in the Vicinity of an Oscillating Triangular Cylinder

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概要

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• The steady flow generated by an oscillating triangular cylinder immersed in a viscous, incompressible fluid is investigated experimentally. When an equilateral triangular cylinder is oscillated perpendicularly to one of its sides, the flow pattern in the vicinity of the cylinder is symmetric with respect to the axis of oscillation but asymmetric with respect to the axis perpendicular to it. The flow patterns are classified into two types on the basis of the values of two non-dimensional parameters, $\mbi{r}_{0}\sqrt{\omega/\nu}$ and $s/\mbi{r}_{0}$, where $\mbi{r}_{0}$ is half the side length of the cylinder section, $\omega$ the angular frequency, $\nu$ the kinematic viscosity and $s$ the oscillation amplitude. On the other hand, when the triangular cylinder is oscillated parallel to one of its sides, the flow pattern is asymmetric with respect to the axis of oscillation but symmetric with respect to the axis perpendicular to it. The flow patterns are classified into three types.

• 社団法人日本物理学会の論文
• 1975-01-15

著者

• Tatsuno Masakazu

  Research Institute For Applied Mechanics Kyushu University

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• Visualization of the Unsteady Flow past Cylinders and Plates Decelerated from Steady Speed
• Effects of interference among three equidistantly arranged cylinders in a uniform flow
• Circulatory Streaming in the Vicinity of an Oscillating Square Cylinder
• Two Pairs of Rectilinear Vortices
• Vortex Rings in a Stratified Fluid

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