ИСТИНА

We consider a radial supersonic outflow of a detonable gas emanating from a source. There exists a steady-state solution in which a circular converging detonation stands at some distance from the source. We analyze the structure of this solution and calculate its stability properties. Two-dimensional simulations based on the reactive Euler equations are carried out as well in order to understand the nonlinear dynamics of such detonations. The role played by frictional losses in the detonation stability is also investigated.