Abstract
A novel approach to accurately represent the carrier gas thermo-chemical properties of droplets evaporating in combustion environment is proposed and validated in the context of reduced capprhes. Numerical analyses of two of the most employed droplet evaporation models in computational fluid dynamiapplications and their subsequent impact on combustion processes are also performed. The study comprehends a systematic investigation of both models and different procedures used to address the relevant thermo-chemical properties for the evaporation modeling. Initially, investigations are addressed in a single droplet framework. Herein, available experimental data give support to the corresponding discussions. In a second part, both selected models and the simplification using air as carrier gas mixture are investigated in the context of flames propagating in droplets mists. A detailed chemistry model is used to represent the combustion of ethanol in air. A simplification strategy is subsequently investigated in terms of the relevant thermo-chemical properties for the evaporation modeling. The resulting strategy is successfully validated in a numerical context for flames propagating in droplet mists. Results aim to help the choice of methods employed for droplet evaporation modeling in a more general context. The methodology adopted in our analyses allows the assessment of each simplification and converges to an optimal combination of the studied methods.
| Language | English |
|---|---|
| Pages | 1141-1153 |
| Number of pages | 13 |
| Journal | International Journal of Heat and Mass Transfer |
| Volume | 137 |
| DOIs | |
| State | Published - 1 Jul 2019 |
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Keywords
- Droplet evaporation
- Droplet mists
- Ethanol
- Evaporation modeling
- Spray combustion
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A novel strategy to accurately represent the carrier gas properties of droplets evaporating in a combustion environment. / Sacomano Filho, Fernando Luiz (Corresponding author); Krieger Filho, Guenther Carlos; van Oijen, Jeroen Adrianus; Sadiki, Amsini; Janicka, Johannes.
In: International Journal of Heat and Mass Transfer, Vol. 137, 01.07.2019, p. 1141-1153.Research output: Contribution to journal › Article › Academic › peer-review
TY - JOUR
T1 - A novel strategy to accurately represent the carrier gas properties of droplets evaporating in a combustion environment
AU - Sacomano Filho,Fernando Luiz
AU - Krieger Filho,Guenther Carlos
AU - van Oijen,Jeroen Adrianus
AU - Sadiki,Amsini
AU - Janicka,Johannes
PY - 2019/7/1
Y1 - 2019/7/1
N2 - A novel approach to accurately represent the carrier gas thermo-chemical properties of droplets evaporating in combustion environment is proposed and validated in the context of reduced capprhes. Numerical analyses of two of the most employed droplet evaporation models in computational fluid dynamiapplications and their subsequent impact on combustion processes are also performed. The study comprehends a systematic investigation of both models and different procedures used to address the relevant thermo-chemical properties for the evaporation modeling. Initially, investigations are addressed in a single droplet framework. Herein, available experimental data give support to the corresponding discussions. In a second part, both selected models and the simplification using air as carrier gas mixture are investigated in the context of flames propagating in droplets mists. A detailed chemistry model is used to represent the combustion of ethanol in air. A simplification strategy is subsequently investigated in terms of the relevant thermo-chemical properties for the evaporation modeling. The resulting strategy is successfully validated in a numerical context for flames propagating in droplet mists. Results aim to help the choice of methods employed for droplet evaporation modeling in a more general context. The methodology adopted in our analyses allows the assessment of each simplification and converges to an optimal combination of the studied methods.
AB - A novel approach to accurately represent the carrier gas thermo-chemical properties of droplets evaporating in combustion environment is proposed and validated in the context of reduced capprhes. Numerical analyses of two of the most employed droplet evaporation models in computational fluid dynamiapplications and their subsequent impact on combustion processes are also performed. The study comprehends a systematic investigation of both models and different procedures used to address the relevant thermo-chemical properties for the evaporation modeling. Initially, investigations are addressed in a single droplet framework. Herein, available experimental data give support to the corresponding discussions. In a second part, both selected models and the simplification using air as carrier gas mixture are investigated in the context of flames propagating in droplets mists. A detailed chemistry model is used to represent the combustion of ethanol in air. A simplification strategy is subsequently investigated in terms of the relevant thermo-chemical properties for the evaporation modeling. The resulting strategy is successfully validated in a numerical context for flames propagating in droplet mists. Results aim to help the choice of methods employed for droplet evaporation modeling in a more general context. The methodology adopted in our analyses allows the assessment of each simplification and converges to an optimal combination of the studied methods.
KW - Droplet evaporation
KW - Droplet mists
KW - Ethanol
KW - Evaporation modeling
KW - Spray combustion
UR - http://www.scopus.com/inward/record.url?scp=85063998753&partnerID=8YFLogxK
U2 - 10.1016/j.ijheatmasstransfer.2019.03.164
DO - 10.1016/j.ijheatmasstransfer.2019.03.164
M3 - Article
VL - 137
SP - 1141
EP - 1153
JO - International Journal of Heat and Mass Transfer
T2 - International Journal of Heat and Mass Transfer
JF - International Journal of Heat and Mass Transfer
SN - 0017-9310
ER -