국내 최대 기계 및 로봇 연구정보

기술보고서

기술보고서 게시판 내용
타이틀	Calculations of High-Speed Rotor Noise Using Euler/Kirchhoff Methods of NAL and ONERA = Research on a new device for measuring the snowy runway surface friction
저자	Takashi AOYAMA, Shigeru SAITO, Toshiyuki IWAMIYA, Joelle ZIBI, Cyril POLACSEK, Olivier ROUZAUD
Keyword	Helicopters; HSI Noise; CFD; Kirchhoff; equation
URL	http://send.nal.go.jp/send/jpn/dlpdf.php3/naltr0001455t.pdf?id=NALTR0001455T
보고서번호	NAL-TR-1455T
발행년도	2002.12
출처	NAL (National Aerospace Laboratory of Japan)
ABSTRACT	High-speed impulsive (HSI) noise generated by helicopter rotors in hover or in forward flight is computed using two Euler/Kirchhoff codes, separately developed by NAL and ONERA as part of the cooperative research project between the two institutes. The project is entitled "Rotorcraft Euler Flow Simulation" and its main purpose is to validate the Euler/Kirchhoff codes in non-lifting delocalized test cases. The pressure distributions on the blade surface computed by the Euler codes are compared before the analysis of aeroacoustic results provided by both Kirchhoff codes. In hover, the computations are conducted using three types of grids