Abstract
The direct-fired supercritical CO2 (sCO2) cycle is conceptually superior to many of the trending energy production technologies due to their remarkably promising efficiency, environmental friendliness and cost. The accurate simulation of this combustion is very important because the operating conditions are very challenging to its experimentation. Hence, the current work focuses on identifying various thermal, transport, chemical kinetic models, investigating various fundamental characteristics and verifying the validity of important underlying modeling assumptions in focus to supercritical CO2 combustion. In the current work, various thermal and transport property models are identified based on accuracy, computational cost and ease of implementation for sCO2 combustion simulations. Further, a validated chemical kinetic mechanism is developed for high-pressure and high-CO2 diluted combustion by incorporating state-of-art chemical kinetic rates which are specifically calculated for sCO2 combustor conditions. Also, crucial design considerations are provided for the design of sCO2 combustors based on 0-D and 1-D reactor models. Finally, important characteristics of non-premixed sCO2 combustion are examined by a canonical counterflow diffusion flame study.
Notes
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Graduation Date
2019
Semester
Summer
Advisor
Vasu Sumathi, Subith
Degree
Doctor of Philosophy (Ph.D.)
College
College of Engineering and Computer Science
Department
Mechanical and Aerospace Engineering
Degree Program
Mechanical Engineering
Format
application/pdf
Identifier
CFE0008086; DP0023225
URL
https://purls.library.ucf.edu/go/DP0023225
Language
English
Release Date
2-15-2021
Length of Campus-only Access
1 year
Access Status
Doctoral Dissertation (Open Access)
STARS Citation
Kancherla, Raghu Veera Manikantachari, "Fundamental Characteristics of Supercritical CO2 Combustion" (2019). Electronic Theses and Dissertations. 6846.
https://stars.library.ucf.edu/etd/6846