Date of Award

Summer 1991

Document Type

Thesis

Degree Name

Master of Science (MS)

Department

Mechanical & Aerospace Engineering

Program/Concentration

Engineering Mechanics

Committee Director

Robert L. Ash

Committee Member

Clemans A. Powell

Committee Member

Chuh Mei

Call Number for Print

Special Collections; LD4331.E57T87

Abstract

A method is developed for predicting the radiant heat flux distribution produced by tungsten-filament tubular quartz heating systems with reflectors. The method is an application of Monte Carlo simulation, which takes the form of a ray tracing or random walk scheme. The method is applied to four systems of increasing complexity including; a single unreflected lamp, a single lamp with a flat reflector, a single lamp with a parabolic reflector, and up to six lamps in a six-lamp contoured reflector heating unit. The general methodology of the Monte Carlo method is discussed and applied to the simulation of thermal radiation.

Experiments were conducted to study these quartz heating systems and to acquire measurements of the corresponding empirical heat flux distributions for correlation with analysis. The experiments were conducted such that several complicating factors could be isolated and studied sequentially. Good agreement between the experimental and simulated results was obtained in all cases.

This study shows that this method can be used to analyze very complicated quartz heating systems and account for factors such as spectral properties, specular reflection from curved surfaces, source enhancement due to reflectors and/ or adjacent sources, and interaction with a participating medium in a straight forward manner.

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DOI

10.25777/gea5-p082

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