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Acceleration techniques for the radiative analysis of general computational fluid dynamics solutions using reverse Monte-Carlo ray tracing

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dc.contributor.authorTurk, Jeffrey A.en
dc.contributor.committeechairMahan, Roberten
dc.contributor.committeememberCliff, Eugene M.en
dc.contributor.committeememberDurham, Wayne C.en
dc.contributor.committeememberMason, Williamen
dc.contributor.committeememberStern, Curtis H.en
dc.contributor.departmentAerospace Engineeringen
dc.date.accessioned2014-03-14T21:19:01Zen
dc.date.adate2008-09-19en
dc.date.available2014-03-14T21:19:01Zen
dc.date.issued1994en
dc.date.rdate2008-09-19en
dc.date.sdate2008-09-19en
dc.description.abstractA reverse Monte-Carlo ray trace capable of performing a radiative analysis on arbitrary multiple overlapping structured computational fluid dynamics solution sets is developed. In order to make effective use of time, a method based on a set of simplifying assumptions but using the same calculation procedures is developed for comparison and study purposes. Three acceleration techniques are tried. One acceleration technique reduces the grid dimensions to reduce the number of volumes intersected. The second acceleration technique develops a version of the code for execution in a parallel processing environment. The third acceleration technique mixes an orthogonal, evenly spaced grid with the computational fluid dynamics grids to obtain fast ray traversal of low variance areas while retaining the higher resolution of the computational fluid dynamics grids in the high variance areas. Two experimental data sets are used for comparison and as test cases during these studies: an exhaust plume from an auxiliary power unit, and a Boeing 747 in flight. Timing for the baseline and accelerated analyses is provided as well as numerical comparisons for a selected subset.en
dc.description.degreePh. D.en
dc.format.extentxviii, 191 leavesen
dc.format.mediumBTDen
dc.format.mimetypeapplication/pdfen
dc.identifier.otheretd-09192008-063033en
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-09192008-063033/en
dc.identifier.urihttp://hdl.handle.net/10919/39394en
dc.language.isoenen
dc.publisherVirginia Techen
dc.relation.haspartLD5655.V856_1994.T875.pdfen
dc.relation.isformatofOCLC# 32772522en
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subject.lccLD5655.V856 1994.T875en
dc.subject.lcshFluid dynamics -- Mathematical modelsen
dc.subject.lcshInfrared radiation -- Mathematical modelsen
dc.subject.lcshMonte Carlo methoden
dc.titleAcceleration techniques for the radiative analysis of general computational fluid dynamics solutions using reverse Monte-Carlo ray tracingen
dc.typeDissertationen
dc.type.dcmitypeTexten
thesis.degree.disciplineAerospace Engineeringen
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen
thesis.degree.leveldoctoralen
thesis.degree.namePh. D.en

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