کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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650211 | 1457275 | 2015 | 11 صفحه PDF | دانلود رایگان |
Explosions near tunnels leading to underground bunkers and inside airplanes or buses are examples of scenarios in which the generated blast waves propagate in corridor-like structures. Therefore, the need to attenuate the blast wave or reduce the blast induced loads inside the structure is essential. The interaction of a shock/blast wave with barriers of different sizes and shapes inside a corridor can attenuate dramatically the load induced by the wave.In the present ongoing research, the focus on the dependence of the shock wave attenuation on a wide span of barrier geometries was emphasized. The research methodology is a numerical one that has been validated by experimental results. The experiments were conducted in a shock tube equipped with a high-speed camera. The numerical simulations were carried out using a commercial code, based on an MSC.Dytran solver under initial conditions similar to those measured in the experiments. In the present comprehensive study, a few thousands of calculations of different barrier geometries have been carried out in order to map the effect of the barrier geometric parameters on the shock wave attenuation in a continues manner. By analyzing the flow features resulting from the interaction of a shock wave and a wide span of the geometric parameters characterizing the barrier, better understanding of the attenuation mechanisms was gained.
Journal: European Journal of Mechanics - B/Fluids - Volume 50, March–April 2015, Pages 60–70