パネル法による水平軸風車ロータ周りの非定常流解析 : 斜め流入風の影響と三次元流れ場における迎え角の考察(流体工学,流体機械)

概要

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The precise prediction of the performance of a wind turbine largely depends on the accurate knowledge of the flow around the rotor as it is subject to the induced velocity caused by the spiral vortex wake and the unsteady aerodynamic loads caused by the rapid change of wind direction. In this paper the flow around a horizontal axis wind turbine (HAWT) rotor in a yawed flow condition is analyzed by a panel method with a free wake model and the cyclic fluctuations of the aerodynamic load due to the asymmetric inflow condition are obtained. To include the viscous effects in the calculated results, the local angle of attack is investigated and is found to be defined well by the angle of incidence at a quarter chord point in the non-yawed condition. In the yawed condition the effects of highly skewed vortex wake on angle of attack are also discussed.
一般社団法人日本機械学会の論文
2005-01-25