Effects of tip clearance on performance and characteristics of backflow in a turbopump inducer
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- Title
- Effects of tip clearance on performance and characteristics of backflow in a turbopump inducer
- Authors
- Kim, S; Choi, C; Kim, J; Park, J; Baek, J
- Date Issued
- 2013-12
- Publisher
- SAGE PUBLICATIONS LTD
- Abstract
- The objectives of the present study were to investigate the effects of tip clearance on the performance and flow characteristics of a turbopump inducer by using computational fluid dynamics. Three different tip-clearance sizes were analyzed for design and off-design conditions. The numerical results were validated by comparison with experimental results. Our detailed investigation of the simulated flow fields shows that backflow penetrates farther upstream for large-tip clearances, which means that performance declines rapidly. On the other hand, for small-tip clearances, the extent of backflow is reduced but the development of hub separation in the middle of the passage causes performance degradation. Our results confirm that a particular value of the tip-clearance limits the development of secondary flow in the passage.
- Keywords
- Turbopump; inducer; cavitation; tip clearance; performance; backflow; VORTEX STRUCTURE; SIMULATION; INLET
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/14166
- DOI
- 10.1177/0957650913499014
- ISSN
- 0957-6509
- Article Type
- Article
- Citation
- PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART A-JOURNAL OF POWER AND ENERGY, vol. 227, no. 8, page. 847 - 857, 2013-12
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