Revisiting Geometrical Shock Dynamics for blast wave propagation in complex environment

20th International Symposium on Nonlinear Acoustics (ISNA) including the 2nd International Sonic Boom Forum (ISBF), Ecole Centrale Lyon, Lyon, FRANCE, JUN 29-JUL 03, 2015International audienceA new fast-running model for blast wave propagation in air is described. This model is an extension of Whitham's Geometrical Shock Dynamics with specific closure to non sustained shock waves. The numerical procedure relies on a Cartesian fast-marching like algorithm with immersed boundary method for complex boundaries. Comparison to academic results underline the capacity of this model