Date of Award
9-18-1998
Document Type
Dissertation
Degree Name
Doctor of Philosophy (PhD)
Department
Energy Engineering
First Advisor
M. Y. Choi
Abstract
Due to the complex interaction of turbulence and chemical reactions, detailed analysis of turbulent flames have never been successfully accomplished. In this work, a simple approach to modeling the interaction of turbulence and chemical kinetics in a lean premixed $\rm H\sb2/O\sb2/N\sb2$ combustion system using SANDIA Premixed Laminar Flame Code and SENKIN Code is described.In order to account for turbulence transport characteristics and accompanying heat transfer effects, a multiplication factor to laminar transport is introduced to the SANDIA Laminar Flame Code. This model has been exercised to determine ignition delay time in pseudo one dimensional flow reactor for 1, 3, 6 and 9 atm conditions A multiplication factor equation as a function of physical properties of the flow is extracted. The effect of mole fraction and limitation of the MF method is also discussed. Using the multiplication factor obtained from the equation, the modeling calculations are found to be in good agreement with experimental measurements.Practical applications for such a model include determining the ignition delay time of gas turbine combustion which burns lean premixed hydrocarbon fuels in order to reduce $\rm NO\sb{x}$ emission. Because the multiplication factor equation requires that the constant be determined from experimental data, this modeling method is especially suitable for the improvement of practical combustion apparatus.
Recommended Citation
Lee, Dong Ho, "A comparison of experimental measurements and numerical calculations of ignition delay in lean premixed H(2)/O(2)/N(2) turbulent combustion: A unique approach to modeling turbulent combustion." (1998). Theses and Dissertations. 7779.
https://commons.und.edu/theses/7779