An Assessment of Superposition of Free Convection - Radiation in a Square Enclosure

Author

Dong Chen

Document Type

Thesis - University Access Only

Award Date

1995

Degree Name

Master of Science (MS)

Department / School

Mechanical Engineering

First Advisor

A. Moutsoglou

Abstract

Combined free convection and radiation in a nonparticipating or participating medium contained in a square enclosure with isothermal side walls and adiabatic black top and bottom walls is numerically investigated. For radiatively participating media the S₆ discrete-ordinate approximation is used to obtain the solution to the radiation transport equation. The SIMPLER algorithm is used to solve the Navier-Stokes equations. The effects of optical thickness, radiation number and emissivity of side walls on heat transfer rates are discussed. The performance of superposing the pure free convection and pure surface radiation mode results of local and total heat transfer rates is evaluated. Such superposed results are compared with combined interacting free convection-radiation models and significant deviations between two models are encountered.

Library of Congress Subject Headings

Heat -- Transmission
Heat -- Radiation and absorption
Heat -- Convection, Natural

Format

application/pdf

Publisher

South Dakota State University

Recommended Citation

Chen, Dong, "An Assessment of Superposition of Free Convection - Radiation in a Square Enclosure" (1995). Electronic Theses and Dissertations. 120.
https://openprairie.sdstate.edu/etd2/120