Quantitative Hypersonic Flow Measurements using Planar Laser-Induced Fluorescence

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dc.contributor.advisorJohansen, Craig T.
dc.contributor.authorMcDougall, Connor Charles
dc.contributor.committeememberKim, Seonghwan
dc.contributor.committeememberMurari, Kartikeya
dc.contributor.committeememberWood, David H.
dc.date2018-11-16
dc.date.accessioned2018-09-17T14:14:59Z
dc.date.available2018-09-17T14:14:59Z
dc.date.issued2018-09-10
dc.description.abstractThe present work focuses on the development, testing, and assessment of several new quantitative analysis methods for nitric oxide planar laser-induced fluorescence experiments. The methods are based on performing a spectral scan with a pulsed laser, exciting multiple nitric oxide transitions,and analyzing the resulting spectra. The nitric oxide fluorescence spectra is processed using the developed quantitative analysis methods to produce temperature, mole fraction and heat flux. The temperature measurement is based on fitting a fluorescence model to the spectra from multiple transitions. The mole fraction measurement uses the fluorescence signal combined with the principle of conservation of mass. The heat flux measurement uses the principle of conservation of energy combined with temperature and velocimetry measurements. To assess these methods, experiments were performed at NASA Langley’s 31-in. Mach 10 wind tunnel, in Hampton Virginia, USA.A nitric oxide planar laser-induced fluorescence experiment investigating a hypersonic boundary layer was performed. The boundary layer was seeded with nitric oxide through a slot located nearthe leading edge. A pulsed laser was directed into the boundary layer from above, exciting the nitric oxide, and spectrally scanning across six fluorescence transitions. The data received from this experiment were processed using the quantitative analysis methods developed, to produce temperature, mole fraction and heat flux measurements. To assess the accuracy of the present methods,each quantitative measurement was compared to computational fluid dynamics (CFD) simulation results. Temperature measurements agreed with CFD predictions within 3-7% in most regions of the boundary layer. Mole fraction measurements agreed with CFD predictions within 6-10%and the heat flux measurement was approximately 26% lower than CFD results. Finally, important experimental design considerations are discussed to enhance these analysis methods in future applications. Overall, nitric oxide planar laser-induced fluorescence measurement methods are demonstrated and applied to a hypersonic boundary layer in a Mach 10 flow, with good agreement when compared to CFD results.en_US
dc.identifier.citationMcDougall, C. C. (2018). Quantitative Hypersonic Flow Measurements using Planar Laser-Induced Fluorescence (Master's thesis, University of Calgary, Calgary, Canada). Retrieved from https://prism.ucalgary.ca. doi:10.11575/PRISM/32917en_US
dc.identifier.doihttp://dx.doi.org/10.11575/PRISM/32917
dc.identifier.urihttp://hdl.handle.net/1880/107741
dc.language.isoeng
dc.publisher.facultyGraduate Studies
dc.publisher.facultySchulich School of Engineering
dc.publisher.institutionUniversity of Calgaryen
dc.publisher.placeCalgaryen
dc.rightsUniversity of Calgary graduate students retain copyright ownership and moral rights for their thesis. You may use this material in any way that is permitted by the Copyright Act or through licensing that has been assigned to the document. For uses that are not allowable under copyright legislation or licensing, you are required to seek permission.
dc.subjectFluorescence
dc.subject.classificationEngineeringen_US
dc.titleQuantitative Hypersonic Flow Measurements using Planar Laser-Induced Fluorescence
dc.typemaster thesis
thesis.degree.disciplineMechanical and Manufacturing Engineering
thesis.degree.grantorUniversity of Calgary
thesis.degree.nameMaster of Science (MSc)
ucalgary.item.requestcopytrue
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