Detailed soot modelling in laminar flames

Damien AUBAGNAC-KARKAR

The project
This project aims to extend with advanced soot modelling previous studies performed at Laboratoire PC2A on rich premixed laminar flames gas phase kinetics (Energy 43 (2012) 73-84 El Bakali et al.). Therefore, the main objectives of this work are to provide a soot model able to predict soot number density functions (SNDF) in laminar flames and to use it to simulate various flames studied at Laboratoire PC2A. The model will be based on a sectional description of the SNDF (Combust. Flame 162 (2015) 3081-3099, Aubagnac-Karkar et al.) interacting with a detailed kinetic solver such as the one already used at Laboratoire PC2A. The project splits into two parts.

A first technical step is required in order to implement the proposed model in a detailed kinetic solver. This step includes a comparative study between the available kinetic solvers, the choice of the soot model technical specifications and its actual implementation into the chosen kinetic solver.

Then, a database containing several experimental sooting laminar flames will be selected and simulated. This database will be mostly based on the experiments performed at Laboratoire PC2A. Rich n-butane flames (Damien Boufflers, PhD thesis, Université Lille 1) and low-sooting flames (Proc. Comb. Inst. 35 (2015) 1843-1850, Bladh et al.) are examples of this project targeted conditions. Flame measurements taken from literature will also be considered in order to complete these studies. These simulations will rely on detailed gas phase chemistry mechanisms developed previously at Laboratoire PC2A. They will be defined in order to focus a few specific points of soot particles physics. Thus, they should lead to further validations of the model as well as a better understanding of soot formation and evolution processes.

Laboratory
PC2A

Period
start: October 2015
end: September 2016

Financing
Labex CaPPA