Eventos Anais de eventos
ENCIT 2016
16th Brazilian Congress of Thermal Sciences and Engineering
NUMERICAL STUDY OF LAMINAR PREMIXED METHANE/AIR FLAMES WITH CARBON DIOXIDE DILUTION
Submission Author:
Miguel Mendieta , SP
Co-Authors:
DARIO ALVISO, Rogério Gonçalves dos Santos
Presenter: Miguel Mendieta
doi://10.26678/ABCM.ENCIT2016.CIT2016-0688
Abstract
In this work carbon dioxide dilution on the laminar premixed methane/air flames was studied by means of kinetic modelling. This study contributes to the understandings of the effect of CO2 concentrations on the combustion characteristics of biogas. The simulations were performed using the REGATH package with GRI 3.0 chemical scheme. Dilution from 0% to 50% CO2 (volume) were computed at atmospheric pressure of 0.1 MPa an inlet temperature of 298 K with equivalence ratios from 0.7 to 1.3. Laminar flame speeds were estimated using a one-dimensional premixed flame model. The laminar flame speed and flame temperature of CH4/air decreased with increasing CO2 dilution. The increase in CO2 concentrations reduced the reactants‘ concentrations, decreasing the net reaction rate and thus the flame speed.
Keywords
Biogas, Kinetic Modeling, Numerical simulation, Premixed flame, Dilution, CO2
