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RESEARCH PAPERS

Spectral Emission Measurements From Planar Mixtures of Gas and Particulates

[+] Author and Article Information
R. D. Skocypec, D. V. Walters, R. O. Buckius

Department of Mechanical and Industrial Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801

J. Heat Transfer 109(1), 151-158 (Feb 01, 1987) (8 pages) doi:10.1115/1.3248036 History: Received April 29, 1985; Online October 20, 2009

Abstract

An experimental system is developed that forms a hot layer of gas and particulates flowing through a test section with cooled walls. The test section forms a one-dimensional planar layer, allows intrusive probes to characterize the medium in terms of particle loading and temperature, and allows radiometric measurements of the normally directed spectral energy emitted from the medium. Gas flow, gas composition, and particle flow are controlled. An experimental investigation is undertaken yielding spectral normally directed emittance data obtained from a well-characterized layer containing gaseous constituents of carbon dioxide and nitrogen, and solid particles of BNi-2, a boron nickel alloy. Emittance data are presented and exhibit the effects of particulate scattering, including the extension of the 4.3 μm carbon dioxide band wings. Emittance data are compared to analytical predictions.

Copyright © 1987 by ASME
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