Masters Theses

Abstract

"Four heuristic models' available for predicting the behavior or radiation Non regularly reflected from spherical surfaces have been studied. The four models include: the classical Lambert, the s-factor as deduced by Look, the Lommel-Seeliger, and the Euler's approach. Because each of these analyses was deduced for flat plate geometry, it was first necessary to integrate these flat plate expressions over the surface of a sphere to develop appropriate expressions for the power rejected from the surface of a sphere based upon e ach of the above theories. As an integral part of this investigation, various basic quantities were listed (i. c. intensity, radiometric intensity, flux, and power) in an effort to organize them for future heat transfer computation. From these derived expressions, for the power reflected from the surface of a sphere, theoretically produced curves were obtained. By statistically comparing these theoretical curves to actual experimental data obtained in this investigation conclusions about the accuracy of these theories could be made. It was discovered that the s-factor analysis predicted the shape of the actual data better than the other analyses investigated here. The s-factor was within three percent of the actual data. Closely behind the s-factor analysis, was the classical Lambert analysis with a percent deviation of approximately six percent. It was discovered that the analyses deduced by Euler and Lommel Seeliger did not describe the actual data well enough to be considered in future studies of Non regularly reflecting surfaces.

During the course of this investigation, an empirical expression was inadvertently found which fit the experimental data even better than the s-factor analysis. This expression, remotely related to the form of the Lamber t equation, fit the data to within three percent"-- Abstract, pp. ii-iii

Advisor(s)

Look, Dwight C., 1938-

Committee Member(s)

Armaly, B. F. (Bassem F.)
Pagano, Sylvester J., 1924-2006

Department(s)

Mechanical and Aerospace Engineering

Degree Name

M.S. in Mechanical Engineering

Publisher

University of Missouri--Rolla

Publication Date

1974

Pagination

x, 260 pages

Note about bibliography

Includes bibliographical references (pages 100-102)

Rights

© 1974 Bruce Wayne Rau, All rights reserved.

Document Type

Thesis - Open Access

File Type

text

Language

English

Thesis Number

T 4027

Print OCLC #

5982068

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