Host: The Japan Society of Mechanical Engineers
Name : [in Japanese]
Date : October 20, 2018 - October 21, 2018
We report numerical simulations for assessing the effect of the shape of an underground magazine model on blast-wave propagation outside the magazine. The magazine model was divided into chamber and passageway sections. The internal diameters of the chamber and passageway sections were 38.8 mm and 19.8 mm, respectively. The length ratio between the chamber and passageway lengths varies from 0.125 to 2.0. Numerical simulations provide the azimuthal distributions of peak overpressure, and a narrow passageway greatly mitigates the peak overpressure outside the magazine, but the ratio of the chamber to the passageway length shows no effect on the peak overpressure.
