Flow Between Eccentric Rotating Cylinders, Where the Clearance is Relatively Large

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概要

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• Measurement of viscous frictional moment and a visual study of flow between eccentric rotating cylinders, of which the outer one rotates, are done for the relatively large clearance ratios. Friction factors are considered for various eccentricity ratios in the laminar, the transient and the fully developed turbulent flow region, respectively. In the fully developed turbulent flow region, friction factor C_M can be given by C_M^∝ R_ω^<-0.3> for various eccentricity ratios m. In the transient region where a turbulent spot or a spiral turbulence is observed, the oscillatory change of friction factor can be measured. But such an oscillation is damped, as the flow becomes fully turbulent. Critical Reynolds number decreases significantly with an increase of eccentricity ratio.

• 一般社団法人日本機械学会の論文

著者

• YAMADA Yutaka

  Nagoya Institute of Technology

• Nakabayashi Kouichi

  Nagoya Institute Of Technology

• YAMADA Yutaka

  Kawasaki Heavy Industries Ltd.

関連論文

• The Flow around a Rotating Cone in a Casing : For the Case When the Cone Vertex Angle is 60° : Series B : Fluid Engineering Heat Transfer Combustion, Power Thermophysical Properties
• Flow Between Eccentric Rotating Cylinders, Where the Clearance is Relatively Large
• On the Frictional Resistance of Enclosed Rotating Cones : 1st Report, Frictional Moment and Observation of Flow with a Smooth Surface
• On the Frictional Resistance of Enclosed Rotating Cones : 2nd Report, Effects of Surface Roughness

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