국내 최대 기계 및 로봇 연구정보

공학설계D/B

공학설계D/B 게시판 내용
Volume Title	Vibration and Acoustic Fatigue
Volume No	Loading actions (near-field jet, buzz-saw noise due to fan, turbulent boundary layer) and Damping (estimation in laminated plates, use of damping treatments).
DATA Title	Estimation of the surface pressure fluctuations in the turbulent boundary layer of a flight vehicle.
DATA Item	75021
KEYWORD	acoustic, body, boundary, cone, cylinder, forebody, layer, level, loading, missile, noise, pressure, program, revolution, sound, surface, turbulent
ISBN	0 85679 125 3
ABSTRACT	ESDU 75021 presents graphs of a correlation of flight test data taken from many sources in the literature that enables the overall fluctuating pressure in dB and its spectrum level in dB/Hz to be predicted for attached flow on cylindrical or conical bodies. The correlation applies to Mach numbers from 0.1 to 4 and Reynolds numbers based on length along the body of 1 to 1000 million. The r.m.s. error between predicted overall pressure level and measured was 3 dB. A Fortran program of the method is provided on disc in the software volume (ESDUpac A7521) both uncompiled and compiled within ESDUview, a user-friendly interface that runs under MS DOS and prompts on-screen for input data.