A novel strategy to accurately represent the carrier gas properties of droplets evaporating in a combustion environment

Fernando Luiz Sacomano Filho (Corresponding author), Guenther Carlos Krieger Filho, Jeroen Adrianus van Oijen, Amsini Sadiki, Johannes Janicka

Research output: Contribution to journalArticleAcademicpeer-review

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.

LanguageEnglish
Pages1141-1153
Number of pages13
JournalInternational Journal of Heat and Mass Transfer
Volume137
DOIs
StatePublished - 1 Jul 2019

Fingerprint

thermochemical properties
Gases
simplification
evaporation
mist
Evaporation
gases
Chemical properties
flames
Fog
air
gas mixtures
ethyl alcohol
methodology
chemistry
Air
Gas mixtures
fluids
Ethanol
Fluids

Keywords

  • Droplet evaporation
  • Droplet mists
  • Ethanol
  • Evaporation modeling
  • Spray combustion

Cite this

Sacomano Filho, Fernando Luiz ; Krieger Filho, Guenther Carlos ; van Oijen, Jeroen Adrianus ; Sadiki, Amsini ; Janicka, Johannes. / A novel strategy to accurately represent the carrier gas properties of droplets evaporating in a combustion environment. In: International Journal of Heat and Mass Transfer. 2019 ; Vol. 137. pp. 1141-1153
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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.",
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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 journalArticleAcademicpeer-review

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