Effects of Inlet Flow Pattern on Cavitation Inception of Centrifugal Pumps

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概要

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• Flow patterns near the inlet portion of an impeller and cavitation inception were examined experimentally using a centrifugal pump with 3, 7 and 9 blade impellers. At low flow rates, velocities at the inlet of seven and nine blade impellers have non-uniform distributions inbetween hub and shroud, which cause a large drop of pressure on the suction surface of the blades near the shroud. In the impeller with three blades, a large vortex was created near the suction side of its inlet and this prevents severe drop in the pressure as seen in the seven blade impeller. Three kinds of cavitation were observed in the impeller passages according to the pressure distribution on the blade surface.

• 一般社団法人日本機械学会の論文

著者

• Kikuyama Koji

  Faculty Of Engineering Nagoya University

• Murakami Mitsukiyo

  Aichi Institute Of Technology

• Asakura Eiji

  Faculty Of Mechanical Eng. Nagoya University

• HASEGAWA Yutaka

  Nagoya university

• KIKUYAMA Koji

  Faculty of Mechanical Eng., Nagoya University

• HASEGAWA Yutaka

  Nagoya Institute of Technology

関連論文

• Effects of Channel Rotation on Turbulent Boundary Layers along a Convex Surface
• Performance of a Mixed-Flow Pump Handling Air-Water Two-phase Mixtures : Series B : Fluid Engineering, Heat Transfer, Combustion, Power, Thermophysical, Properties
• Behavior of Solid Particles in a Radial-flow Pump Impeller
• Flow of Cavitation Bubbles in a Centrifugal Pump Impeller
• Effects of Inlet Flow Pattern on Cavitation Inception of Centrifugal Pumps
• Velocity Distributions in the Impeller Passages of Centrifugal Pumps : Effects of Outlet Edge Shape of the Impeller Blades on the Pump Performance
• Effects of Coriolis Force on the Turbulent Boundary Layer with Pressure Gradients
• Pipe Flow under the Influence of a Coriolis Force : 2nd Report, Experiments and Analysis of the Wavy Flow in a Rotating Pipe
• Developments in the Research of Air-Water Two-Phase Flows in Turbomachinery
• Characteristics of Centrifugal Pumps Handling Air-water Mixtures and Size of Air Bubbles in Pump Impellers
• Effects of Blade Number on Hydraulic Force Perturbation on Impeller of Volute-Type Centrifugal Pump
• Preface

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