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터보펌프 인듀서 주변 극저온 공동 유동에 대한 수치적 연구 : Numerical investigation on cryogenic cavitating flows around turbopump inducer
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- Authors
- Issue Date
- 2014-02-20
- Publisher
- 한국항공우주학회
- Citation
- 제 13회 우주발사체기술 심포지움, 대전, 2014, pp. 100-105
- Keywords
- 공학 ; Cryogenic Cavitation ; Compressible/Incompressible Two-phase Flow ; Turbopump Inducer Simulation
- Abstract
- This research deals with performance prediction of turbopump inducer through the two-phase flow computations. To describe the thermal effects of cryogenic fluids and two-phase flows, we used the additional governing equation for one-phase mass conservation law. As a spatial descritization scheme, RoeM for multi-phase flows are extended to treat the general equation of states, and preconditioning techniques are applied for robust and efficient computations in low-mach number region. As a validation step for such progress, two-dimensional/axi-symmetric cryogenic cavitating flows around hydrofoil and ogive are computed with different working fluids and cavitation models. Finally, numerical simulations of three-dimensional KARI turbopump inducer are carried out under various flow conditions with water and cryogenic fluids, and the differences in inducer flow physics depending on the working fluids are examined.
- Language
- Korean
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