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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 한국유체기계학회 International Journal of Fluid Machinery and Systems International Journal of Fluid Machinery and Systems Vol.6 No.4
- 발행연도
- 2013.12
- 수록면
- 200 - 205 (6page)
- DOI
- http://dx.doi.org/10.5293/IJFMS.2013.6.4.200
이용수
초록· 키워드
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In order to investigate the characteristics of unsteady flow in a mixed flow pump guide vane under the small flow conditions, several indicator points in a mixed flow pump guide vane was set, the three-dimensional unsteady turbulence numerical value of the mixed flow pump which is in the whole flow field will be calculated by means of the large eddy simulation (LES), sub-grid scale model and sliding mesh technology. The experimental results suggest that the large eddy simulation can estimate the positive slope characteristic of head & capacity curve. And the calculation results show that the pressure fluctuation coefficients of the middle section in guide vane inlet will decrease firstly and then increase. In guide vane outlet, the pressure fluctuation coefficients of section will be approximately axially symmetrical distribution. The pressure fluctuation minimum of section in guide vane inlet is above the middle location of the guide vane suction surface, and the pressure fluctuation minimum of section in which located the middle and outlet of guide vane. When it is under the small flow operating condition, the eddy scale of guide vane is larger, and the pressure fluctuation of the channel in guide vane being cyclical fluctuations obviously which leads to the area of eddy expanding to the whole channel from the suction side. The middle of the guide vane suction surface of the minimum amplitude pressure fluctuation to which the vortex core of eddy scale whose direction of fluid's rotation is the same to impeller in the guide vane adhere.
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참고문헌 (9)
참고문헌 신청
1. [학술지(정기간행물)] - Wang F.-J. / 2007 / Analysis on pressure fluctuation of unsteady flow in axial flow pump / Shui LI Xue Bao 38 (08) : 1003 ~ 1009
2. [학술지(정기간행물)] - Kato C. / 2003 / Large-Eddy Simulation of Unsteady Flow in a Mixed How Pump / International Journal of Rotating Machinery 9 : 345 ~ 351
3. [학술대회논문] - Rinaldo L. M. / 2010 / The internal structure of the tip leakage vortex within the rotor of an axial water-jet pump / Proceedings of ASME Turbo Expo: Power for Land, Sea and Air GT2010 : 1 ~ 16
4. [학술지(정기간행물)] - Miyabe M. / 2006 / Unstable head-flow characteristic generation mechanism of a low specific speed mixed flow pump / Journal of Thermal Science 1 (2) : 115 ~ 120
5. [학술지(정기간행물)] - Byskov R. K. / 2003 / Flow in a centrifugal pump impeller at design and off-design conditions, part II: large eddy simulations / J. of Fluids Eng., Trans. of the ASME 125 (1) : 73 ~ 83
2. [학술지(정기간행물)] - Kato C. / 2003 / Large-Eddy Simulation of Unsteady Flow in a Mixed How Pump / International Journal of Rotating Machinery 9 : 345 ~ 351
3. [학술대회논문] - Rinaldo L. M. / 2010 / The internal structure of the tip leakage vortex within the rotor of an axial water-jet pump / Proceedings of ASME Turbo Expo: Power for Land, Sea and Air GT2010 : 1 ~ 16
4. [학술지(정기간행물)] - Miyabe M. / 2006 / Unstable head-flow characteristic generation mechanism of a low specific speed mixed flow pump / Journal of Thermal Science 1 (2) : 115 ~ 120
5. [학술지(정기간행물)] - Byskov R. K. / 2003 / Flow in a centrifugal pump impeller at design and off-design conditions, part II: large eddy simulations / J. of Fluids Eng., Trans. of the ASME 125 (1) : 73 ~ 83
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