Keywords
Combustion; Hydrogen; Premixing; Flame Boundary; Chemiluminescence
Abstract
The objective of this research was to investigate the reaction of hydrogen and heated air premixing when injected into a combusting ethylene-air crossflow, and to study the flame stabilization location with varying premixing levels. The main parameter of this investigation was the flame stabilization diagnosed through chemiluminescence, based on recorded equivalence ratio, temperature, and flame boundaries, and maintaining a constant air temperature, hydrogen and air mass flow, and momentum flux ratios. Testing was conducted at different ratios of hydrogen and air premixing achieved through alternating the distance between the point where hydrogen and air are mixed and the combusting crossflow. The results show a correlation between the amount of premixing with the location of flame stabilization and the flame boundaries. This research helps further understand the characteristics of burning hydrogen, which will be relevant as the use of hydrogen increases in energy generation.
Thesis Completion Year
2025
Thesis Completion Semester
Summer
Thesis Chair
Ahmed, Kareem
College
College of Engineering and Computer Science
Department
Department of Mechanical and Aerospace Engineering
Thesis Discipline
Aerospace Engineering
Language
English
Access Status
Open Access
Length of Campus Access
None
Campus Location
Orlando (Main) Campus
STARS Citation
de Lima Junior, Alecson L., "Flame Boundary Effects of Hydrogen-Air Premixing" (2025). Honors Undergraduate Theses. 367.
https://stars.library.ucf.edu/hut2024/367
Included in
Other Aerospace Engineering Commons, Power and Energy Commons, Propulsion and Power Commons
Rights Statement
