Huang Xiaolong, Weng Chunsheng, Li Ning, Xu Guiyang. Experimental study of acoustic behavior of three-tube PDE system in near-field[J]. Explosion And Shock Waves, 2016, 36(5): 633-639. doi: 10.11883/1001-1455(2016)05-0633-07
Citation:
Huang Xiaolong, Weng Chunsheng, Li Ning, Xu Guiyang. Experimental study of acoustic behavior of three-tube PDE system in near-field[J]. Explosion And Shock Waves, 2016, 36(5): 633-639. doi: 10.11883/1001-1455(2016)05-0633-07
Huang Xiaolong, Weng Chunsheng, Li Ning, Xu Guiyang. Experimental study of acoustic behavior of three-tube PDE system in near-field[J]. Explosion And Shock Waves, 2016, 36(5): 633-639. doi: 10.11883/1001-1455(2016)05-0633-07
Citation:
Huang Xiaolong, Weng Chunsheng, Li Ning, Xu Guiyang. Experimental study of acoustic behavior of three-tube PDE system in near-field[J]. Explosion And Shock Waves, 2016, 36(5): 633-639. doi: 10.11883/1001-1455(2016)05-0633-07
In the present work, a testing system consisting of three detonation tubes was designed in a regular triangle to investigate the noise characteristics of a three-tube PDE system and their formation mechanism. The distance between each tube and the central axis is 200 mm. The directivity of acoustic emissions is measured using a circular array of four transducers (0°, 30°, 60°, and 90°) at various radial distances. Results show that all the max peak pressures appear in the directivity of 30°. The referential radius of the detonation noise is three times that of the "nominal tube diameter". The duration of A time decreases almost linearly along with the increase of r (the distance to the nominal "central point" of the three detonation tubes), and also decreases with the increase of the angle. The duration of B time is inversely proportional to the noise amplitude, and increases with the increase of the axial distance. At different angles, the greater the peak pressure, the smaller the duration of B time.
Yuan Cheng, Fan Wei, Peng Changxin, et al. Experimental investigation on a six-tube air-breathing pulse detonation engine[J]. Journal of Aerospace Power, 2011, 26(9):1981-1985. http://d.old.wanfangdata.com.cn/Periodical/hkdlxb201109011
[3]
Shaw L, Harris K, Schauer F, et al. Acoustic measurements for a pulse detonation engine[R]. AIAA 2005-2952, 2005. doi: 10.2514/6.2005-2952
[4]
Glaser A J, Caldwell N, Gutmark E. A fundamental study on the acoustic behavior of pulse detonation engines[R]. AIAA 2007-444, 2007. doi: 10.2514/6.2007-444
Zheng Longxi, Yan Chuanjun, Fan Wei, et al. Preliminary exploration on noise radiation characteristics of pulse detonation engine model[J]. Journal of Vibration Measurement & Diagnosis, 2006, 26(3):176-180. doi: 10.3969/j.issn.1004-6801.2006.03.002
Caldwell N, Glaser A, Gutmark E. Acoustic measurements of multiple pulse detonation engines firing out of phase[R]. AIAA 2007-445, 2007. doi: 10.2514/6.2007-445
[8]
Eerden F V D, Berg F V D. The acoustic source strength of high-energy blast waves: Combining measurements and a non-linear model[C]. 20th International Congress on Acoustics, 2010: 23-27.
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