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dc.contributor.advisorEzekoye, Ofodike A.en
dc.creatorAnzalone, Reed Anthonyen
dc.date.accessioned2011-02-16T20:29:21Zen
dc.date.accessioned2011-02-16T20:29:35Zen
dc.date.available2011-02-16T20:29:21Zen
dc.date.available2011-02-16T20:29:35Zen
dc.date.issued2010-12en
dc.date.submittedDecember 2010en
dc.identifier.urihttp://hdl.handle.net/2152/ETD-UT-2010-12-2612en
dc.descriptiontexten
dc.description.abstractA one-dimensional, quasi-steady ablation model with finite rate surface chemistry and frozen equilibrium pyrolysis gases is developed and discussed. This material response model is then coupled to a film-transfer boundary layer model to enable the computation of heat and mass transfer to and from the ablating surface. A shock model is outlined, as well, and all three components are then coupled together to form a stand-alone ablation code. The coupled models in the code are validated with respect to arcjet experiments, and comparisons are drawn between the ablation code and the unsteady ablation code Chaleur, as well as other computations for a graphite ablator in an arcjet. The coupled code is found to compare very well to both the experimental results and the other calculations. It is also found to have unique computational capabilities due to the use of finite-rate surface chemistry. Finally, uncertainty propagation using the quadrature method of moments (QMOM) is discussed. The method is applied to a number of simplified sample problems, for both univariate and multivariate scenarios. QMOM is then used to compute the uncertainty in an application of the coupled ablation code using a graphite ablator. The results of this study are discussed, and conclusions about the utility of the method as well as the properties of the ablation code are drawn.en
dc.format.mimetypeapplication/pdfen
dc.language.isoengen
dc.subjectAblationen
dc.subjectQMOMen
dc.subjectThermophysicsen
dc.subjectAerothermochemistryen
dc.subjectPECOSen
dc.titleA toolkit for characterizing uncertainties in hypersonic flow-induced ablationen
dc.date.updated2011-02-16T20:29:35Zen
dc.contributor.committeeMemberUpadhyay, Rochan R.en
dc.description.departmentMechanical Engineeringen
dc.type.genrethesisen
thesis.degree.departmentMechanical Engineeringen
thesis.degree.disciplineMechanical Engineeringen
thesis.degree.grantorUniversity of Texas at Austinen
thesis.degree.levelMastersen
thesis.degree.nameMaster of Science in Engineeringen


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