Date of Award

3-14-2008

Document Type

Thesis

Degree Name

Master of Science

Department

Department of Engineering Physics

First Advisor

William F. Bailey, PhD

Abstract

Demonstration of a strategy to perform two-dimensional diode laser tomography using a priori knowledge from symmetry arguments and computational fluid dynamic (CFD) calculations is presented for a flat flame burner. The strategy uses an optimization technique to determine flame diameter and location using a vector quantization approach. Next, the variance in a training set, produced from CFD calculations, is captured using principal components analysis. The information in the training set allows interpolation between beam paths resulting in temperature and density maps. Finally, the TDLAS temperature and density maps are shown to agree with traditional thermocouple measurements of the flat flame burner to within five percent. Preliminary tomography results using the same strategy are then presented for a super-sonic flow through an isolator, a length of wind tunnel necessary to keep the shock wave produced by the combustor from reaching the inlet.

AFIT Designator

AFIT-GAP-ENP-08-M04

DTIC Accession Number

ADA483259

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