喷流噪声实验研究  

EXPERIMENTAL INVESTIGATION ON JET NOISE

作　　者：郑克扬[1] 桂幸民[1] 

机构地区：[1]北京航空航天大学

出　　处：《航空动力学报》1991年第2期131-133,共3页Journal of Aerospace Power

摘　　要：The correlation of sound power with jet velocity is studied in this paper.It is indicated that Both Lighthill′s and Lilley′s formulas fit experimental data very well when Mach number of jet Maj>0 4,but the diviation between the results obtained from the formulas and experimental data is not so negligible as Maj<0 4.The authors propose substituting sixth power of the jet velocity instead its eighth power in the formulas.The direction sensitiveness and the frequency spectrum of jet noise have been investigated enperimentally.The correlation of sound power with jet velocity is studied in this paper.It is indicated that Both Lighthill′s and Lilley′s formulas fit experimental data very well when Mach number of jet Maj>0 4,but the diviation between the results obtained from the formulas and experimental data is not so negligible as Maj<0 4.The authors propose substituting sixth power of the jet velocity instead its eighth power in the formulas.The direction sensitiveness and the frequency spectrum of jet noise have been investigated enperimentally.

关 键 词：喷流 噪声 高速气流 实验 

分 类 号：TB533.3[理学—物理]