Rotordynamic Forces from Discharge-to-Suction Leakage Flows in Centrifugal Pumps : Effects of Geometry

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概要

• 論文の詳細を見る

• The rotordynamic forces generated by the fluid flow through the impeller leakage path of a centrifugal pump are now well established. The present paper examines the effects of modifying the leakage path geometry by changing the front shroud, from a conical shape to a more typical curved design, and the effects of low pressure seal design on these forces. It is found that only the cross-coupled stiffness is affected by the change of pathgeometry. Changing the low pressure seal from an axial to a radial clearance does, however, significantly affect the rotordynamic forces. A bulk flow numerical model is found to predict the same general result for the low pressure seal tests. The model agrees with the general trends with increasing leakage flow coefficient exhibited by the data, but appears to underpredict the magnitude of the normal force.

• 一般社団法人日本機械学会の論文
• 1998-02-15

著者

• Brennen Christopher

  Department Of Mechanical Engineering California Institute Of Technology

• UY Robert

  Department of Mechanical Engineering, California Institute of Technology

• BIRCUMSHAW Brian

  Department of Mechanical Engineering, California Institute of Technology

• Uy Robert

  Department Of Mechanical Engineering California Institute Of Technology

• Bircumshaw Brian

  Department Of Mechanical Engineering California Institute Of Technology

関連論文

• Rotordynamic Forces from Discharge-to-Suction Leakage Flows in Centrifugal Pumps : Effects of Geometry

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