First principles simulation of reacting hypersonic flow over a blunt wedge

This article presents molecular-level analysis of a reactive, near-continuum, Mach 21 nitrogen flow over blunt wedge using the direct molecular simulation (DMS) method. The conditions lead to internal energy excitation and dissociation in field, resulting thermal chemical nonequilibrium flow. Thermal vibrational mode is observed extend level, where distributions at various points field are be non-Boltzmann. Furthermore, this first reactive DMS calculation wall assumed isothermal full momentum accommodation particles enforced, hence incorporating viscous effects. Since method uses quantum mechanically generated interaction potential as its only modeling input, all thermochemical transport properties can directly attributed ab initio surface. Using solution benchmark, assesses performance Navier–Stokes computational fluid dynamics solutions lower fidelity two-temperature models. Two models chosen comparison: well-known Park model recently developed modified Marrone Treanor model.