Investigation of Supersonic Mixing Using Laser-Induced Breakdown Spectroscopy
| dc.contributor.advisor | Buckley, Steven G | en_US |
| dc.contributor.author | Tempel, Travis | en_US |
| dc.contributor.department | Mechanical Engineering | en_US |
| dc.date.accessioned | 2004-06-04T05:29:54Z | |
| dc.date.available | 2004-06-04T05:29:54Z | |
| dc.date.issued | 2004-05-05 | en_US |
| dc.description.abstract | Supersonic mixing enhancement techniques are of considerable interest; typically qualitative observations of shear layer growth rate are used to compare these techniques. A more accurate assessment of the efficiency of various mixing techniques could be made using local species concentrations at specific points. Laser-induced breakdown spectroscopy (LIBS), which can determine local elemental concentrations in a flowfield, is applied to the supersonic mixing problem in this work. An investigation of mixing caused by cavity-induced resonance was completed in a Mach 2 wind tunnel using LIBS. Calibration experiments showed that LIBS is capable of measuring helium concentrations with ± 5%, ± 15%, ± 25%, and ± 40% fractional error for ranges of 0-25%, 25-45%, 45-75%, and 75-100% helium. Quantitative helium concentration measurements were performed at several points in the flow field. The results showed that cavity-induced resonance caused an increase in the mixing between helium and air in supersonic flow. | en_US |
| dc.format.extent | 849895 bytes | |
| dc.format.extent | 3016192 bytes | |
| dc.format.mimetype | application/pdf | |
| dc.format.mimetype | application/msword | |
| dc.identifier.uri | http://hdl.handle.net/1903/1391 | |
| dc.language.iso | en_US | |
| dc.relation.isAvailableAt | Digital Repository at the University of Maryland | en_US |
| dc.relation.isAvailableAt | University of Maryland (College Park, Md.) | en_US |
| dc.subject.pqcontrolled | Engineering, Mechanical | en_US |
| dc.subject.pquncontrolled | laser induced breakdown spectroscopy | en_US |
| dc.subject.pquncontrolled | supersonic mixing | en_US |
| dc.title | Investigation of Supersonic Mixing Using Laser-Induced Breakdown Spectroscopy | en_US |
| dc.type | Thesis | en_US |