Sonic Line and Shock Detachment in Hypervelocity Cone Flow Conference Paper uri icon


  • Detachment of the bow shock wave in flow over cones is strongly dependent on non-equilibrium dissociation. The reason for this is the interesting behavior of the sonic line that bounds the region from which information can reach the cone tip. In contrast to perfect-gas flows, in which the sonic line necessarily terminates at the shoulder, the subsonic region may terminate on the cone flank in the case of dissociating flows. This has been shown in the case of wedge flows by Hornung and Smith, 1979, and in the case of cones by Hornung and Houwing, 1980 and by Leyva, 1999. The behavior of the sonic line has also been studied in a theoretical analysis by Hornung, 1998. In the following, we present some of the results of Leyva, together with new computations in order to illustrate the importance of the transonic part of the flow in this hypervelocity problem.

name of conference

  • IUTAM Symposium Transsonicum IV

published proceedings

  • IUTAM Symposium Transsonicum IV. Fluid Mechanics and its Applications

author list (cited authors)

  • Hornung, H. G., & Leyva, I. A.

citation count

  • 4

complete list of authors

  • Hornung, HG||Leyva, IA

editor list (cited editors)

  • Sobieczky, H.

publication date

  • January 2003