CAJ | 학술논문

采用Fluent6．3软件，并结合SSTκ-ω模型对1．2MW风力发电机旋转风轮流场进行了数值模拟，对设计转速为18．44r／min工况下三叶片风轮与相同叶片单叶片、双叶片以及四叶片风轮流场的输出功率与湍动能进行了比较，并分析了风轮旋转对叶片间流动的影响．结果表明：旋转上游叶片在转动过程中会发生附着涡的脱落，导致旋转下游叶片周围流场的环境发生变化，对叶片转矩及输出功率造成较大影响．在翼型优化中，考虑叶片间作用可以提高风力发电机的效率．
채용Fluent6．3연건，병결합SSTκ-ω모형대1．2MW풍력발전궤선전풍륜류장진행료수치모의，대설계전속위18．44r／min공황하삼협편풍륜여상동협편단협편、쌍협편이급사협편풍륜류장적수출공솔여단동능진행료비교，병분석료풍륜선전대협편간류동적영향．결과표명：선전상유협편재전동과정중회발생부착와적탈락，도치선전하유협편주위류장적배경발생변화，대협편전구급수출공솔조성교대영향．재익형우화중，고필협편간작용가이제고풍력발전궤적효솔．
Numerical simulation has been performed on flow field of rotating wind wheel for a 1. 2 MW wind turbine using Fluent 6.3 software and SST κ-ω model, so as to compare the power output and turbu- lent kinetic energy of various flow fields among single-, two-, three- and four-blade rotors at the design speed of 18.44 r/min, and subsequently analyze the influence of wheel rotation on flow field of blade. Resuits show that vortex shedding from up-stream rotating blades frequently occurs during operation, which may lead to alteration of the flow field around down-stream rotating blades, hence the blade torque and power output are greatly affected. The wind turbine efficiency may be improved via airfoil optimization by considering the interaction of various blades.