Whirling Motion of Swirl Center in a Conical Diffuser

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概要

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• When a flow with swirling component is introduced into a conical diffuser, the swirl center deviates from the diffuser axis and whirls around it if the swirl intensity and Reynolds number exceed critical values. The critical swirl intensity Ω_<cr> and the Reynolds number Re_<cr> depend on the diffuser geometry, especially on the opening angle but not on the area ratio. A nondimensional whirling frequency f^* depends on the swirl intensity and the diffuser opening angle but not on Reynolds number. The value of f^* becomes minimum at Ω=0.45.

• 一般社団法人日本機械学会の論文

著者

• Kitoh Osami

  Nagoya Institute Of Technology

• Kito Osami

  Nagoya Institute Of Technology

• KAMlYA Eisei

  Fuji Electric Corporation

• Kamiya Eisei

  Fuji Electric Corporation

関連論文

• Whirling Motion of Swirl Center in a Conical Diffuser
• Near Wall Velocity Distribution of Turbulent Swirling Flow in Circular Pipe
• Fundamental Frequencies and Characteristics of Disturbance in the Laminar-Turbulent Transition Process of the Flow between Two Concentric Spheres with the Inner Sphere Rotating : Series B : Fluid Engineering, Heat Transfer, Combustion, Power, Thermophysic
• Axi-asymmetric Character of Turbulent Swirling Flow in a Straight Circular Pipe
• Effects of Swirling Flow Components on Discharge Coefficients of Elbow Flow Meters
• Effects of Swirling Flow Components on Discharge Coefficients of Constriction Meters

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