Laboratory experiments and numerical models of interacting explosions

We present laboratory experiments and numerical simulations of the interaction between two explosions. In the laboratory, two expanding shock waves were produced using two Nd: YAG lasers, and the numerical simulations were carried out with the yguazu-a code (Raga et al. 2000). We show that the numerical simulations and laboratory experiments agree in a satisfactory way, and we discuss the general properties of the resulting flows. Finally, we discuss the similarities and differences between the laboratory experiments and some astrophysical objects.