Work

Assessment of an effervescent breakup model for Lagrangian simulations of real fuel sprays

Year: 2024

Type: article

Abstract: Flash boiling drastically alters the characteristics of spray atomization and plume structure, which could impose challenges for modern propulsion systems design regarding fuel/air mixture formation and emission performances . Numerical simulations serve as effective tools to understand and predict flash boiling sprays for modern engine applications. This study carried out Eulerian–Lagrangian spray simulation campaigns for two gasoline injectors , and realistic single-composite and multi-component fuel models were used instead of simple surrogates. A validated effervescent breakup model was adopted to account for the non-trivial breakup mechanism induced by bubble nucleation within the liquid droplets . Effects of key model parameters were discussed in detail to propose a consistent set of model constants, and comprehensive validation was achieved against near- and far-field spray experiments. The effervescent breakup model has demonstrated satisfactory effectiveness, and the numerical findings also highlight the necessity of employing real fuel properties for spray analysis.

Source: International Journal of Thermofluids

DOI: 10.1016/j.ijft.2024.100991

Authors: Francesco Duronio, Anqi Zhang, Le Zhao, Angelo De Vita

Institutions: University of L'Aquila, National Research Council, Saudi Aramco (United States)

Language: English

Topic: Advanced Combustion Engine Technologies

Subfield: Fluid Flow and Transfer Processes

Field: Chemical Engineering

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $2,010

Funders: European Commission, Ministero dell’Istruzione, dell’Università e della Ricerca, Università degli Studi dell'Aquila, Ministero dell'Università e della Ricerca