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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Investigations of Evaporative Cooling and Turbulence Flame Interaction Modeling in Ethanol Turbulent Spray Combustion Using Tabulated Chemistry

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Sacomano Filho, Fernando Luiz [1] ; Dressler, Louis [2] ; Hosseinzadeh, Arash [2] ; Sadiki, Amsini [2] ; Krieger Filho, Guenther Carlos [1]
Total Authors: 5
[1] Univ Sao Paulo, Lab Environm & Thermal Engn, BR-05508030 Sao Paulo - Brazil
[2] Tech Univ Darmstadt, Inst Energy & Power Plant Technol, D-64287 Darmstadt - Germany
Total Affiliations: 2
Document type: Journal article
Source: FLUIDS; v. 4, n. 4 DEC 2019.
Web of Science Citations: 0

Evaporative cooling effects and turbulence flame interaction are analyzed in the large eddy simulation (LES) context for an ethanol turbulent spray flame. Investigations are conducted with the artificially thickened flame (ATF) approach coupled with an extension of the mixture adaptive thickening procedure to account for variations of enthalpy. Droplets are tracked in a Euler-Lagrangian framework, in which an evaporation model accounting for the inter-phase non-equilibrium is applied. The chemistry is tabulated following the flamelet generated manifold (FGM) method. Enthalpy variations are incorporated in the resulting FGM database in a universal fashion, which is not limited to the heat losses caused by evaporative cooling effects. The relevance of the evaporative cooling is evaluated with a typically applied setting for a flame surface wrinkling model. Using one of the resulting cases from the evaporative cooling analysis as a reference, the importance of the flame wrinkling modeling is studied. Besides its novelty, the completeness of the proposed modeling strategy allows a significant contribution to the understanding of the most relevant phenomena for the turbulent spray combustion modeling. (AU)

FAPESP's process: 17/06815-7 - Study of biofuel-based multicomponent spray combustion using computational fluid dynamics
Grantee:Fernando Luiz Sacomano Filho
Support Opportunities: Scholarships in Brazil - Post-Doctoral