Channelling and Attenuating Effects of Blast Parameters in Urban Street Geometry with Glazing

Absztrakt

In recent years, a few studies have been carried out to determine formulae describing parameters of explosions taken place in street canyons. This paper quantifies the magnification effect resulting from the multiple reflections of the shock front and the complex interaction of the reflected waves with respect to the street width and façade height. When windows shatter, air leaks through them attenuating the confinement effect that is, decreasing the parameters of the amplified shock wave. A 3D computational fluid dynamics (CFD) aided analysis was carried out for a general street arrangement to capture this phenomenon, and present a modification factor to account for it.