As detonations are being implemented into modern combustion technologies to benefit from the efficiency gain, their properties need to be fully characterized. Of main interest is hydrocarbon fuels given the substantially higher energy density over hydrogen. In thin channels detonations have been known to appear nominally 2D allowing for higher detail line-of-sight imaging techniques. Many studies have investigated hydrocarbon detonations in this mode but have not evaluated the consistency of the key detonation properties. A statistical approach is used in this study by using ensemble averaging over many realizations of the detonation to determine these properties. The experimental data was collected by igniting a pre-mixed Methane-Oxygen-Nitrogen mixture in a confined channel. The detonating wave travels through a converging section to reduce the channel width to the test condition. The detonation is then observed through a combination of high-speed schlieren imaging and a pressure transducer array. This data is then processed to provide quantified statistics for the detonation cell size, Chapman-Jouguet velocity and pressure, and the Von-Neumann pressure spike helping to further the understanding of detonations.
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Master of Science in Mechanical Engineering (M.S.M.E.)
College of Engineering and Computer Science
Mechanical and Aerospace Engineering
Mechanical Engineering; Thermo-Fluids Track
Length of Campus-only Access
Masters Thesis (Campus-only Access)
Berson, Joshua, "Statistical Analysis of Detonation Stability" (2023). Electronic Theses and Dissertations, 2020-. 1856.
Restricted to the UCF community until August 2028; it will then be open access.