Numerical Simulation of Compressible Reactive Viscous Flow in Complex Geometries

The work presented here is mainly concerned with the ability of an inviscid flow model to capture the correct physical behaviors of the Detonation and Deflagrations to Detonations Transition (DDT) process. Inviscid and viscous numerical results concerning the detonation front propagating over a sudden expansion and in an obstacle lled channel are presented. The analysis provides a transparent and revealing qualitative and quantitative understanding that the usual arguments employed to support the validity of the inviscid flow model become increasingly weaker in a reactive environment.