비속도에 따른 원심펌프의 내부유동 특성 연구 (Internal Flow Characteristics of a Centrifugal Pump with Various Specific Speeds)

서지정보

· 발행기관 : 한국유체기계학회
· 수록지 정보 : 한국유체기계학회 논문집 / 20권 / 3호 / 26 ~ 35페이지
· 저자명 : 심현석, 김광용, 최영석

초록

In this paper, a numerical investigation of a centrifugal pump for different specific speeds has been performed to study the flow characteristics inside the passage of an impeller. Three-dimensional steady Reynolds-averaged Navier-Stokes equations were solved by a finite volume-based solver, and the shear stress transport model was adopted as a turbulence closure.
Numerical results for the performance parameters showed good agreements with experimental data. Jet-wake flow, secondary flow, three-dimensional streamlines, and total pressure loss distributions in the centrifugal pumps, were investigated to find a correlation between the flow characteristics and specific speed. It was observed that flow structure in the centrifugal pump varied remarkably with the specific speed of the pump. Also, it is noted that understanding of the jet-wake and secondary flow inside the passage of the impeller, is highly important to grasp the mechanisms of total pressure losses of the centrifugal pump.

영어초록

In this paper, a numerical investigation of a centrifugal pump for different specific speeds has been performed to study the flow characteristics inside the passage of an impeller. Three-dimensional steady Reynolds-averaged Navier-Stokes equations were solved by a finite volume-based solver, and the shear stress transport model was adopted as a turbulence closure.
Numerical results for the performance parameters showed good agreements with experimental data. Jet-wake flow, secondary flow, three-dimensional streamlines, and total pressure loss distributions in the centrifugal pumps, were investigated to find a correlation between the flow characteristics and specific speed. It was observed that flow structure in the centrifugal pump varied remarkably with the specific speed of the pump. Also, it is noted that understanding of the jet-wake and secondary flow inside the passage of the impeller, is highly important to grasp the mechanisms of total pressure losses of the centrifugal pump.

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