CAJ | 학술논문

叶片作为潮流能水轮机的关键部位，其设计水准直接关系到水轮机性能的优劣。基于风力机相关的叶片设计方法，辅以翼型设计分析技术和数据编程优化软件对新近提出的一种轴流式潮流能水轮机的叶片进行优化设计。对优化后水轮机叶片在不同转速下的工作效率数值仿真分析结果显示，设定转速100 r/min的水轮机在设定工况范围内有较好的输出效率。另外，带15°攻角的折线型导流罩结构可以极大提高水轮机的工作效率，相同工况下比无导流罩式水轮机输出功率提高30%。
협편작위조류능수륜궤적관건부위，기설계수준직접관계도수륜궤성능적우렬。기우풍력궤상관적협편설계방법，보이익형설계분석기술화수거편정우화연건대신근제출적일충축류식조류능수륜궤적협편진행우화설계。대우화후수륜궤협편재불동전속하적공작효솔수치방진분석결과현시，설정전속100 r/min적수륜궤재설정공황범위내유교호적수출효솔。령외，대15°공각적절선형도류조결구가이겁대제고수륜궤적공작효솔，상동공황하비무도류조식수륜궤수출공솔제고30%。
As a critical part of tidal current energy conversion device, the turbine plays an important role to determine whether the hydrodynamic performance is well or not. By means of the design and analysis methods for wind turbine blade, the turbine blades of an axial-flow tidal current turbine newly developed by the author have been optimized. The results attributing to numerical simulation show that it has nice conversion efficiency when the turbine is set to revolve at speed 100 r/min. Otherwise, it has been found that the polygonal duct with 15? attacked angle has good hydrodynamic performances and can greatly improve the efficient of the tidal current turbine system. It has been testified that in the case of same conditions, the output conversion power of tidal current turbine with duct is about 30%larger than that that concerning the case without it.