Date of Award
Spring 2024
Access Type
Thesis - Open Access
Degree Name
Master of Science in Aerospace Engineering
Department
Aerospace Engineering
Committee Chair
Scott Montgomery Martin
First Committee Member
William Engblom
Second Committee Member
Eric Perrell
College Dean
James W. Gregory
Abstract
The effectiveness of porous bleeders in mitigating unstart phenomena and enhancing isolator effectiveness in a hypersonic scramjet was investigated. Through computational fluid dynamics simulations, the impact of porous bleeder design parameters such as pressure jump coefficient and bleeder size on isolator effectiveness and unstart prevention was evaluated. Results indicated that porous bleeders delayed flow separation and reduced adverse pressure gradients, thereby enhancing isolator performance. Additionally, porous bleeders demonstrated promising capabilities in preventing full unstart events and mitigating oscillatory unstart phenomena.
Scholarly Commons Citation
Lindley, Ryan, "Mitigating Engine Unstart in Scramjets with Porous Bleeders" (2024). Doctoral Dissertations and Master's Theses. 813.
https://commons.erau.edu/edt/813
Included in
Aerodynamics and Fluid Mechanics Commons, Aeronautical Vehicles Commons, Propulsion and Power Commons
