Impact of mixing model on predicted no formation in a nonpremixed, partially stirred reactor

1996 ◽  
Vol 26 (2) ◽  
pp. 2223-2229 ◽  
Author(s):  
W.-C. Chang ◽  
J.-Y. Chen
Keyword(s):  
Mixing Model ◽  
No Formation ◽  
Stirred Reactor ◽  
Partially Stirred Reactor

Coherent Flame Model to Predict Formation Pollutants in Turbulent Premixed Flame

2010 ◽  
Author(s):  
Abdelhalim Bentebbiche ◽  
Denis Veynante
Keyword(s):  
Kinetic Scheme ◽  
Turbulent Flames ◽  
Premixed Flame ◽  
Reactive Flow ◽  
Reactor Model ◽  
Turbulent Premixed Flame ◽  
No Formation ◽  
Stirred Reactor ◽  
Good Issue ◽  
Turbulent Premixed

The objective of this work is to analyze and to model the turbulent flames in the context of coherent flame model. We present a detailed description of equations and the flamelet regimes in turbulent premixed flame. A surface density models proposed here represents a good issue for numerical simulation. Extension of coherent flame model and homogenous stilled reactor model is proposed to consider the dynamics behavior of flame and pollutants formation. From the results of this work it is concluded that the coherent flame model allows surpassing difficulties of the turbulent reactive flow modeling. Calculations based on a semi-global kinetic scheme and flamelet formulation combined with a well stirred reactor analysis of the burnt gases are used and provided reasonably accurate values of CO and NO formation. Also, we have observed that CO is formed near the reaction zone (front flame) but emission of CO2, H2O and NO are formed in the hot gases.

scholarly journals Modelling the NO emissions from wildfires at the source level

2014 ◽  
Vol 14 (5) ◽  
pp. 1169-1183 ◽  
Author(s):  
Y. Pérez-Ramirez ◽  
P.-A. Santoni ◽  
N. Darabiha
Keyword(s):  
Kinetic Scheme ◽  
Ground Level ◽  
Kinetic Mechanism ◽  
Numerical Approach ◽  
Volatile Fraction ◽  
Fire Emissions ◽  
No Formation ◽  
Stirred Reactor ◽  
Major Reaction ◽  
Source Level

Abstract. There is a growing interest to characterize fire plumes in order to control air quality during wildfire episodes and to estimate the carbon and ozone balance of fire emissions. A numerical approach has been used to study the mechanisms of NO formation at the source level in wildfires given that NO plays an important role in the formation of ground-level ozone. The major reaction mechanisms involved in NO chemistry have been identified using reaction path analysis. Accordingly, a two-step global kinetic scheme in the gas phase has been proposed herein to account for the volatile fuel-bound nitrogen (fuel-N) conversion to NO, considering that the volatile fraction of fuel-N is released as NH3. Data from simulations using the perfectly stirred reactor (PSR) code from CHEMKIN-II package with a detailed kinetic mechanism (GDF-Kin® 3.0) have been used to calibrate and evaluate the global model under typical wildfire conditions in terms of the composition of the degradation gases of vegetation, the equivalence ratio, the range of temperatures and the residence time.

Small-scale measurements in a partially stirred reactor

2006 ◽  
Vol 40 (5) ◽  
pp. 667-682 ◽  
Author(s):  
J. F. Krawczynski ◽  
B. Renou ◽  
L. Danaila ◽  
F. X. Demoulin
Keyword(s):  
Small Scale ◽  
Stirred Reactor ◽  
Partially Stirred Reactor

scholarly journals An a priori assessment of the Partially Stirred Reactor (PaSR) model for MILD combustion

2020 ◽  
Author(s):  
Salvatore Iavarone ◽  
Arthur Péquin ◽  
Zhi X. Chen ◽  
Nguyen Anh Khoa Doan ◽  
Nedunchezhian Swaminathan ◽  
...  
Keyword(s):  
A Priori ◽  
Mild Combustion ◽  
Stirred Reactor ◽  
Partially Stirred Reactor
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