Coupled Structure and Radiation Analysis of Acetylene/Air Flames

[+] Author and Article Information
J. P. Gore, U.-S. Ip, Y. R. Sivathanu

School of Mechanical Engineering, Purdue University, West Lafayette, IN 47907

J. Heat Transfer 114(2), 487-493 (May 01, 1992) (7 pages) doi:10.1115/1.2911299 History: Received August 14, 1989; Revised October 02, 1991; Online May 23, 2008


A coupled radiation-structure analysis of turbulent, non-premixed, strongly radiating acetylene/air flames is described. The analysis extends the laminar flamelet concept to include the effects of local radiative heat loss/gain. A new method for the calculation of the radiative source term is presented. New measurements of mean and fluctuating emission temperatures and radiation intensities, and previous data concerning flame structure are used to evaluate the predictions. Results show good agreement between measurements and predictions of flame structure similar to past uncoupled calculations. The mean emission temperatures and the mean visible radiation intensities are substantially underpredicted by the uncoupled analysis. The coupled calculations provide reasonable estimates of both quantities.

Copyright © 1992 by The American Society of Mechanical Engineers
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