Field experiment of blast wave pressure modulation past a turbulent flow
SCIENCE AND TECHNOLOGY OF ENERGETIC MATERIALS(2016)
摘要
An experimental investigation of the interaction between a quasi-planar blast wave generated by 0.5 g report composition and a counter-turbulent flow was conducted in a square field having an area of 20 x 15 m(2). In the experiments, overpressure waveforms of the blast waves were measured using four microphones for both the cases without flow and with turbulence when the speed of natural wind was 0.0 m s(-1). Without flow, the waveforms were similar to the Friedlander waveform, and the standard deviation between local standardized peak overpressures was 2% of the average of the standardized overpressure. In contrast, with turbulence, the waveforms were modulated between shots, and the standard deviation was 11% of the average of the standardized overpressure.
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关键词
field experiment,blast wave,shock wave,turbulence,interaction
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