Flow Characteristics in a V-shaped Region of a Suction Performance Curve in a Double-suction Centrifugal Pump

Donghyuk Kang; Satoshi Yamazaki; Shusaku Kagawa; Byungjin An; Motohiko Nohmi; Kazuhiko Yokota

doi:10.5293/IJFMS.2019.12.1.089

추천

검색

질문

자료유형: 학술저널

저자정보: Donghyuk Kang (Saitama University) Satoshi Yamazaki (EBARA Corporation) Shusaku Kagawa (EBARA Corporation) Byungjin An (EBARA Corporation) Motohiko Nohmi (EBARA Corporation) Kazuhiko Yokota (Aoyama Gakuin University)

저널정보: 한국유체기계학회 International Journal of Fluid Machinery and Systems International Journal of Fluid Machinery and Systems Vol.12 No.1

발행연도: 2019.3

수록면: 89 - 98 (10page)

DOI: 10.5293/IJFMS.2019.12.1.089

이용수

📌

연구주제

📖

연구배경

🔬

연구방법

🏆

연구결과

초록· 키워드

오류제보하기

The present study investigated flow characteristics in the V-shaped region of the suction performance curve for a double-suction centrifugal pump based on the computational fluid dynamics (CFD). The V-shaped region in the time-averaged suction performance curve was simulated well. The CFD simulated the fluid oscillations due to cavitation surge and rotating cavitation well. The V-shaped region was observed in the absolute total pressure difference between the impeller inlet and outlet. The time histories showed that the cavity produced vorticity, resulting in an increase in a pressure loss, and a decrease in an impeller torque and an angular momentum flow rate. The time-averaged cavity volume, pressure loss between the impeller inlet and outlet, vorticity in the blade passage and impeller torque were examined. A Λ shape of a cavity volume curve caused a Λ shape of a vorticity curve, resulting in a Λ shape of a pressure loss curve and a V shape of an impeller torque curve. The Λ shape of the pressure loss curve and the V shape of the impeller torque curve caused the V shape of the suction performance curve.

#Vorticity #Pressure loss #Torque #Angular momentum flow rate #Suction performance curve #V-shaped region

참고문헌 (15)

참고문헌 신청

Young, W. E. / 1972 / Study of cavitating inducer instabilities :1~149

Kamijo, K. / 1977 / An experimental investigation of cavitating inducer instability :1~9

Tsujimoto, Y. / 1993 / A Theoretical analysis of rotating cavitation in inducers / J Fluid Eng-Trans ASME 11(51):135~141

Tsujimoto, Y. / 1997 / Observations of oscillating cavitation of an inducer / Transactions of the ASME, Journal of Fluid Engineering 119:775~781

Kang, D. / 2009 / Cause of cavitation instabilities in three dimensional inducer / International Journal of Fluid Machinery and Systems 2(3):206~214

함께 읽어보면 좋을 논문

논문 유사도에 따라 DBpia 가 추천하는 논문입니다. 함께 보면 좋을 연관 논문을 확인해보세요!

이 논문의 저자 정보

강동혁

소속기관 한국항공우주연구원

주요연구분야 공학 > 기계공학 > 항공우주공학 TOP 5% 공학 > 기계공학 > 기계공학 일반

논문수 109 이용수 8,874

Satoshi Yamazaki

소속기관 EBARA Corporation