Theoretical analysis and quantitative measurements of nonbuoyant elliptic laminar jet diffusion flames
Abstract
Experiments were conducted aboard the KC-135 microgravity research aircraft to study the characteristics of asymmetric laminar diffusion flames at buoyant and nonbuoyant conditions. Two elliptic tube burners of 2:1 and 3:1 aspect ratios were studied. A circular burner with an equivalent diameter similar to elliptic burners was also tested to generate the baseline data. Since visible flame dimensions and radiations reveal the important aspects of diffusion flames, this study was primarily aimed at measuring lengths, widths and radiative heat release rates of flames issued from elliptic burners at different gravity levels. Direct flame photography and bi-directional multimode heat flux sensor were used to measure the luminous flame dimensions and flame radiation respectively. A mathematical model based on the Extended Burke-Schumann flame theory was also developed to analytically predict the flame length issued from an elliptic burner. The model utilized the analytical procedure developed by Roper for circular burners and extended it for elliptic burners. (Abstract shortened by UMI.)
Subject Area
Mechanical engineering
Recommended Citation
Camacho Rosiles, Jorge, "Theoretical analysis and quantitative measurements of nonbuoyant elliptic laminar jet diffusion flames" (2003). ETD Collection for University of Texas, El Paso. AAIEP15517.
https://scholarworks.utep.edu/dissertations/AAIEP15517