On explosion of linearly distributed charge of curvilinear form beneath the surface of a ground

In impulse statement, we consider a two-dimensional problem on explosion of a charge of curvilinear form beneath the surface of a ground. The problem is reduced to the study of the flow of an ideal fluid with a free surface. The flow area is conformally mapped onto a ring. A mapping is constructed by numerical-analytic method. We give the results of the calculation of the blowout funnel at various geometric and physical parameters.