A parametric study of the interaction between a detonation and a bow shock

The interaction of a detonation with the flow field generated by objects moving at supersonic speeds has applications in the fields of industrial safety and in the transportation and storage of gaseous fuels such as hydrogen and natural gas. This is a complex interaction where the detonation propagates through a leading shock, interacts with the object, and diffracts into the wake where it encounters large-scale flow structures and gradients in reactant concentration. The passage of the detonation through this complex flow field distorts the detonation front, affecting the cellular structure. Here, we perform a parametric study to understand the behavior of the flow field for different obstacle geometries, sizes, and speeds. The multidimensional, compressible, reacting, Navier-Stokes equations are solved using AMRFCT where the chemical heat release and diffusive processes are modeled using the Chemical-Diffusive Model (CDM). The results of the two-dimensional interaction provide important insights which will guide future three-dimensional computations.