@inproceedings{oai:jaxa.repo.nii.ac.jp:00006446,
 author = {Fleig, Oliver and 飯田, 誠 and 荒川, 忠一 and Fleig, Oliver and Iida, Makoto and Arakawa, Chuichi},
 book = {宇宙航空研究開発機構特別資料: 航空宇宙数値シミュレーション技術シンポジウム2004論文集, JAXA Special Publication: Proceedings of Aerospace Numerical Simulation Symposium 2004},
 month = {Mar},
 note = {The purpose of this research is to investigate the physical mechanisms associated with tip vortex noise caused by rotating wind turbines. The flow and acoustic field around the WINDMEL3 wind turbine is simulated using compressible Large-Eddy simulation (LES), with emphasis on the blade tip region. The acoustic near field is simulated directly by LES whereas the far field is modeled using acoustic analogy. Due to the fine grid employed, smallest eddy-scales near the blade surface are resolved. Aerodynamic performance and acoustic emissions are predicted for the actual tip shape and an ogee type tip shape. A decrease of the sound pressure level by 5 dB in the high frequency domain is observed for the ogee type tip shape, corresponding to field test measurements. No difference in aerodynamic performance between the actual and the ogee type tip shape is observed. The simulation results will contribute towards designing new wind turbine blades for reduced noise emission., 資料番号: AA0048469006, レポート番号: JAXA-SP-04-012},
 pages = {39--44},
 publisher = {宇宙航空研究開発機構, Japan Aerospace Exploration Agency (JAXA)},
 title = {騒音直接計算を用いた風車翼の騒音低減について},
 volume = {JAXA-SP-04-012},
 year = {2005}
}