Thermochemical Non-Equilibrium Models for Weakly Ionized Hypersonic Flows with Application to Slender-Body Wakes
Abstract
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.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 01, 2018
- Accession Number
- AD1063511
Entities
People
- Matthew P Clarey
Organizations
- Air Force Institute of Technology