Circulatory Streaming around an Oscillating Circular Cylinder at Low Reynolds Numbers

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概要

• 論文の詳細を見る

• The secondary flow generated by an oscillating circular cylinder immersed in a viscous, incompressible fluid is investigated experimentally. When the modified Reynolds number r_0√<ω/ν> is smaller than about 4, the whole flow field is occupied by only one circulatory streaming (the inner circulation), the direction of which is toward the cylinder along the axis of oscillation and away from the cylinder perpendicular to the axis, where r_0 is the radius of circular dylinder, ω the angular frequency and ν the kinematic viscosity. The distance between the core of the inner circulation and the axis of the cylinder is independent of the outer boundary and the oscillation amplitude. At a critical value of the oscillation amplitude the inner circulation shrinks down sharply. The critical amplitude depends on r_0√<ω/ν>, but it is independent of the outer boundary.

• 社団法人日本物理学会の論文
• 1973-09-05

著者

• Tatsuno Masakazu

  Research Institute For Applied Mechanics Kyushu University

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• Circulatory Streaming around an Oscillating Circular Cylinder at Low Reynolds Numbers
• Secondary Flow Induced by a Circular Cylinder Performing Unharmonic Oscillations
• 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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