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原文传递 Thermochemical Non-Equilibrium Models for Weakly Ionized Hypersonic Flows with Application to Slender-Body Wakes.

题名：	Thermochemical Non-Equilibrium Models for Weakly Ionized Hypersonic Flows with Application to Slender-Body Wakes.
作者：	Clarey, M. P.
关键词：	Flow fields, Computational fluid dynamics, Flight testing, Hypersonic flow, Boltzmann equation, Chemical kinetics, Electromagnetic fields, Heat transfer, Hypersonic vehicles, Electron energy, Fluid flow, Electron density, Thermal conductivity, Vibrational relaxation, Boundary layer, Turbulent mixing, Energy transfer, Hypersonic wakes, Non-equilibrium, Wake flows
摘要：	The current resurgence of interest in hypersonic technologies has warranted an inquiry into the commonly employed thermochemical non-equilibrium models. Additionally, research has historically focused on forebody flow-fields, while studies of the complex wake structure have remained elusive. This dissertation aimed to address these two deficits. First, two three-temperature non-equilibrium models were developed, increasing the fidelity of hypersonic solutions above that of the legacy two-temperature model. The models were then investigated via zero-dimensional simulations, to detail the non-equilibrium processes, and ultimately implemented within a CFD architecture and validated against the RAM C-II flight test data. Second, a parametric study, characterizing the wake behind a generic slender cone configuration, was completed where the non-equilibrium processes were shown to extend a significant distance into the wake. The complex wake structure, coupled with the high-fidelity three-temperature model, has implications on radiative heating, communications blackout, and remote detection predictions.
报告类型：	科技报告