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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.10 No.2
- 발행연도
- 2017.6
- 수록면
- 138 - 145 (8page)
- DOI
- 10.5293/IJFMS.2017.10.2.138
이용수
초록· 키워드
오류제보하기
The problem of non-uniform inflow exists in many practical engineering applications, such as the elbow suction pipe of waterjet pump and, the channel head of steam generator which is directly connect with reactor coolant pump. Generally, pumps are identical designs and are selected based on performance under uniform inflow with the straight pipe, but actually non-uniform suction flow is induced by upstream equipment. In this paper, CFD approach was employed to analyze unsteady hydrodynamic characteristics of reactor coolant pumps with different inflows. The Reynolds-averaged Naiver-Stokes equations with the k-ε turbulence model were solved by the computational fluid dynamics software CFX to conduct the steady and unsteady numerical simulation. The numerical results of the straight pipe and channel head were validated with experimental data for the heads at different flow coefficients. In the nominal flow rate, the head of the pump with the channel head decreases by 1.19% when compared to the straight pipe. The complicated structure of channel head induces the inlet flow non-uniform. The non-uniformity of the inflow induces the difference of vorticity distribution at the outlet of the pump. The variation law of blade to blade velocity at different flow rate and the difference of blade to blade velocity with different inflow are researched. The effects of non-uniform inflow on radial forces are absolutely different from the uniform inflow. For the radial forces at the frequency fR, the corresponding amplitude of channel head are higher than the straight pipe at 1.0Ф<SUB>d</SUB> and 1.2Ф<SUB>d</SUB> flow rates, and the corresponding amplitude of channel head are lower than the straight pipe at 0.8Ф<SUB>d</SUB> flow rates.
목차
Abstract
1. Introduction
2. Numerical Simulation
3. Results and Discussions
4. Conclusion
Reference
참고문헌 (16)
참고문헌 신청
[단행본] - SUN, H.-h. / 2010 / The third generation of nuclear power technology AP1000 / China Electric Power Press
[보고서] - Cheng, H. / / Investigation of the distortion suction flow on the performance of the canned nuclear coolant pump
[단행본] - Brennen, C. E. / 1994 / Hydrodynamics of pumps / Oxford Science Publications : 81 ~
[학술지(정기간행물)] - Van Esch, B. / 2009 / Performance and radial loading of a mixed-flow pump under non-uniform suction flow / Journal of Fluids Engineering 131 (5) : 051101 ~
[학술대회논문] - Xu, Z / 2005 / 2D PIV Experiments on Non-Uniform Flow in a Rectangular Open Model Pump Suction Passage / Proc. ASME 2005 International Mechanical Engineering Congress and Exposition : 523 ~ 530
[보고서] - Cheng, H. / / Investigation of the distortion suction flow on the performance of the canned nuclear coolant pump
[단행본] - Brennen, C. E. / 1994 / Hydrodynamics of pumps / Oxford Science Publications : 81 ~
[학술지(정기간행물)] - Van Esch, B. / 2009 / Performance and radial loading of a mixed-flow pump under non-uniform suction flow / Journal of Fluids Engineering 131 (5) : 051101 ~
[학술대회논문] - Xu, Z / 2005 / 2D PIV Experiments on Non-Uniform Flow in a Rectangular Open Model Pump Suction Passage / Proc. ASME 2005 International Mechanical Engineering Congress and Exposition : 523 ~ 530
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UCI(KEPA) : I410-ECN-0101-2018-554-001894604