A 35 Step Reduced Mechanism for Methane-Air Combustion to Estimate Pollutants

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Babaei Zarch, Abbas | 2015

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Type of Document: M.Sc. Thesis
Language: Farsi
Document No: 47151 (45)
University: Sharif University of Technology
Department: Aerospace Engineering
Advisor(s): Mazaheri, Karim
Abstract:
A novel reduced mechanism is introduced which aimed to predicts NOx and CO generation in advanced industrial gas turbine combustors. The survey is initially conducted by considering 25 species in GRI-3 mechanism of Methane oxidation and continued to choose nine of the most important species based on the quasi-steady state analysis. Finally, a new skeletal reduced mechanism with 35 reactions and 20 species is derived using sensitivity analysis, reaction path analysis, and some physical reasons. The overall validity of this mechanism is clearly confirmed by comparing the present predicted results with GRI-3 full mechanism in a PSR reactor. The adiabatic flame temperature and all of the main products and their trend of production are well predicted, furthermore, the accuracy of predicted pollutants (NO2, NO and CO) concentration is less than 10%
Keywords:
Combustion ; Sensitivity Analysis ; Reduced Mechanism ; Production Analysis Rate ; Path Reaction Analysis ; Air-Methane Combustion

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