Numerical study of the generation, propagation and interaction with blast wave walls

GUTIÉRREZ MARCANTONI, L. F.; ELASKAR, SERGIO; TAMAGNO, J.; SALDIÁ, J.; LORENZÓN, DENIS

Resistencia

Congreso; 2020 IEEE Congreso Bienal de Argentina, ARGENCON 2020 - 2020 IEEE Biennial Congress of Argentina, ARGENCON 2020; 2020

IEEE

Explosive phenomena produce a sudden release ofenergy and generate intense shock waves (blast waves). In thiswork, to model these phenomena using concepts of gas dynamics,the free software OpenFOAM TM , through the rhoCentralFoamsolver, is used. The main objective is to study the generation,evolution, and interaction of blast waves with walls. Thisprocess generates a reflected shock wave and an increase inpressure on the wall. Also, an analytical scheme to calculate thereflected pressure is presented. To verify the correct behaviorof the numerical methodology used for the simulation of thepropagation and rebound of blast waves, the numerical results are compared with the classic Sedov solution for cylindricaland spherical explosions, with the theoretical scheme, and withequations presented in the specialized literature. The time ofarrival of the shock to the wall from the origin of the explosionand the maximum reflected pressure are compared becausethese parameters are essential for structural calculation.