Comparison of maximum entropy direct simulation Monte Carlo code with flowfield measurements
Numerical results have been obtained with an axisymmetric direct simulation Monte Carlo code for the flowfield around a 70-deg spherically blunted cone. The results are compared with recently acquired experimental data on the density of the flowfield and the heat transfer and pressure distributions along the surface of the body. The test cases studied cover the flow of nitrogen and chemically reacting real air for a wide range of Knudsen numbers (0.0002-2.0) that extend from continuum to rarefied. The direct simulation Monte Carlo code used for the simulations employs the maximum entropy method for the modeling of energy exchange and reactions in chemically active flowfields and the generalized Borgnakke and Larsen method for the modeling of energy exchange in nonreacting ones.