Keywords

WMS, Laser Absorption Spectroscopy, High Temperature, Flat Flame Burner, MIR

Abstract

Laser absorption spectroscopy has for the past several decades been a standard diagnostic for non-intrusive measurements in various lab and industrial environments in measuring chemical kinetics and speciation in-situ. Engines and energy systems have throughout this time also progressed in conditions, increasing operating temperatures and pressures to a point where traditional laser absorption spectroscopy diagnostics have begun to reach a limit in some of the environments present in these systems. This is especially true in systems such as rotating detonation engines where the vibrations introduced by the detonations also introduce a significant source of noise. To combat this and other sources of noise introduced by the rapidly changing environment, wavelength modulation spectroscopy has been seeing more and more applications to these environments. The design of a sensor capable of measurements at extreme pressure and temperatures is discussed in this work. Furthermore, validation measurements of the system at the UCF flat flame burner facility are presented here over an extended range of temperatures.

Completion Date

2025

Semester

Summer

Committee Chair

Subith Vasu

Degree

Doctor of Philosophy (Ph.D.)

College

College of Engineering and Computer Science

Department

Mechanical and Aerospace Engineering

Format

PDF

Release Date

8-15-2027

Document Type

Dissertation

Campus Location

Orlando (Main) Campus

Subjects

Laser spectroscopy--Research; Laser spectroscopy--Industrial applications; Detonation waves--Measurement--Instruments; Gas dynamics--Measurement; Laser-induced fluorescence

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Available for download on Sunday, August 15, 2027

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