The effect of incident flow on a supersonic circumfluence of a blunt object

Abstract

The influence of the inhomogeneity of a narrow wake with a reduced Mach number and total pressure values on the circumfluence about a blunt body (truncated cone) has been investigated. Two variants in the wake formation have been considered: behind the energy source and behind the moving body. A free boundary method was used for the flow simulation about moving bodies (a variant of the immersed boundary method). The dynamics of the moving body interaction with the head shock wave and formation of the reverse flow region have been studied. For consideration of these modes, it is shown that the presence of the wake before the front part of the body leads to a considerable decrease of wave resistance.