Adaptability research of hydrofoil surface water injection on cavitation suppression
WANG Wei, YI Qi, WANG Yayun, LU Shengpeng, WANG Xiaofang
Key Laboratory of Ocean Energy Utilization and Energy Conservation of Ministry of Education, Dalian University of Technology, Dalian, Liaoning 116024, China
摘要 To study the effectiveness of hydrofoil surface water injection on cavitation suppression, the unsteady cavitation flow field around the NACA0066 hydrofoil at attack angle of 6° was simulated by the modified RNG k-ε turbulence model combined with the fullcavitation model. The structure of cavitation flow field and the hydrodynamic performance of hydrofoil were analyzed at the cavitation number of 085, 070, 055, respectively. Results show that barriered by the jet, the momentum of the reentrant jet was reduced; therefore the development of cavitation and the strength of cavity shedding were weakened to some extent. Cavitation suppression effect was very obvious in the cavitation conditions with the cavitation number of 07 and above when the injection position was at 37% chord length from the hydrofoil leading edge and the jetflow ratio kept 03. Timeaveraged lift and drag coefficient were reduced, but the liftdrag ratio increased in water injection conditions.
通讯作者:
WANG Wei(1967—), female, associate professor, Doctor(wangw@dlut.edu.cn), researching in design and optimization of advanced power plant and fluid machinery.
作者简介: WANG Xiaofang(1960—), female, professor, doctoral supervisor(dlwxf@dlut.edu.cn), researching in simulation and optimization of aerodynamic, hydraulic and thermodynamic performance of turbomachinery.
引用本文:
WANG Wei, YI Qi, WANG Yayun, LU Shengpeng, WANG Xiaofang. Adaptability research of hydrofoil surface water injection on cavitation suppression [J]. 排灌机械工程学报, 2017, 35(6): 461-466.
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