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논문 기본 정보

자료유형
학술저널
저자정보
Qian Chen (Lanzhou University of Technology) Luo Xin (Lanzhou University of Technology) Yang Congxin (Lanzhou University of Technology) Wang Bin (Petrochemical Research Institute)
저널정보
한국유체기계학회 International Journal of Fluid Machinery and Systems International Journal of Fluid Machinery and Systems Vol.13 No.2
발행연도
2020.6
수록면
526 - 535 (10page)
DOI
10.5293/IJFMS.2020.13.2.526

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초록· 키워드

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In order to study the effect of balance drum clearance on flow distribution in back sidewall gap of last-stage impeller, numerical calculation of a multistage pump was carried out. The accuracy of the numerical calculation method was verified with the external characteristic test. The axial distribution of the radial velocity at the inlet and the bottom of the back sidewall gap at different angles was plotted. The results showed that the radial velocity near the impeller flows radially to the outlet of the impeller, and the radial velocity near the pump shell flows radially to the hub. Influenced by the high-turbulent energy fluid at the outlet of the impeller, there are obvious eddy current movement at the inlet of the back sidewall gap, and the radial velocity increases with the increase of the balance drum clearance. When the flow rate increases from 0.5Q to 1.5Q, the radial velocity decreases gradually at the same angle. The results can provide a reference for the pump design and optimization.

목차

Abstract
1. Introduction
2. Model and numerical methods
3. Numerical method verification
4. Calculation results and analysis
5. Conclusion
Reference

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