Novel high quality GeSn and GePb alloys for mid-infrared photodetectors
Abstract
role in the stability and operation of such inductive plasmas and the hot gas can lead to strong heat losses to any bounding surfaces- particularly when expanded through a supersonic nozzle with a narrow throat. Inspired by vortex rocket engines, this project will investigate a novel gas flow configuration based on counter-propagating vortices that can substantially reduce heat losses and enhance gas heating. Previous experimental work has validated the basic concept, but a solid theoretical basis is missing and the underlying physics, important scaling laws, and complex interactions are poorly understood. The main objective of this research project is to explicitly address these challenges by using high-fidelity multi-physics numerical simulations that incorporate vortex and supersonic gas dynamics, plasma physics, heat transfer, and electrodynamics. The primary focus will be on understanding the structure of the vortex flow field and how this can be controlled to influence plasma-gas heating and conductive heat losses to boundary surfaces. Results from these simulations will then be used to develop a new experimental prototype to validate major findings. The outcomes of this project will provide an important foundation for the development of practical high-enthalpy vortex devices for future ground- and space based applications
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Feb 05, 2025
- Source ID
- FA23862414007
Entities
People
- James Williams
Organizations
- Air Force Office of Scientific Research
- Australian National University
- United States Air Force