New parabolized Navier-Stokes code for three-dimensional chemically reacting flows

A NEW parabolized Navier-Stokes (PNS) code has been developed to compute the laminar hypersonic chemically reacting flow around three-dimensional bodies. This new space-marching code solves the gasdynamic and species conservation equations in a fully coupled manner using a non-iterative, implicit, approximately factored, finite-difference algorithm. The space-marching method is made well-posed by special treatment of the streamwise pressure gradient term. The code has been used to compute the hypersonic laminar. flow over cones at various angles of attack. The flow medium in these calculations is a multicomponent mixture of O-2, N-2, O, N, NO, NO+, and e(-). The results of these calculations have been compared with the results from reacting boundary-layer calculations and show excellent agreement.