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Proceedings Paper

Analysis of nozzle effect on pulsed detonation engine performance based on laser absorption spectroscopy with Doppler frequency shift
Author(s): Xiao-long Huang; Ning Li; Chun-sheng Weng; Xiao-jing Lv
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Paper Abstract

An optical experiment system of tunable diode laser absorption spectroscopy is designed for valveless gas-liquid PDE to reveal the mechanism of nozzle improved the thrust performance. The velocity of detonation exhaust with non-nozzle, convergent nozzle, divergent nozzle and convergent-divergent nozzle is tested by laser Doppler velocimetry. The results indicate that laser Doppler method can accurately infer the instantaneous flow velocity, especially the velocity platform where contributes more to the engine impulse. The maximum value is 1222.66 m/s, 1128.52 m/s, 1338.64 m/s and 1296.93 m/s, the time of duration which the velocity is greater than 400m/s is 8.51ms, 7.58ms, 5.83ms and 17.62ms of the velocity under the condition of non-nozzle, convergent nozzle, divergent nozzle and convergent-divergent nozzle respectively.

Paper Details

Date Published: 19 October 2016
PDF: 6 pages
Proc. SPIE 10155, Optical Measurement Technology and Instrumentation, 101552W (19 October 2016); doi: 10.1117/12.2247240
Show Author Affiliations
Xiao-long Huang, Nanjing Univ. of Science and Technology (China)
Ning Li, Nanjing Univ. of Science and Technology (China)
Chun-sheng Weng, Nanjing Univ. of Science and Technology (China)
Xiao-jing Lv, Nanjing Univ. of Science and Technology (China)


Published in SPIE Proceedings Vol. 10155:
Optical Measurement Technology and Instrumentation
Sen Han; JiuBin Tan, Editor(s)

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