Work

LES of Liquid Jet Breakup Using an Eulerian-Lagrangian Approach Extended by a Primary Atomization Model

Year: 2025

Type: article

Abstract: The present article is concerned with the modeling of primary atomization in Eulerian-Lagrangian Large Eddy Simulation of liquid jet breakup. Recent numerical studies have demonstrated that spray atomization does not strictly follow a large-to-small breakup cascade. Instead, numerous small droplets can directly be generated by the core jet. As these cannot be resolved in Large Eddy Simulations using interface capturing methods for primary atomization, modeling their formation by releasing small Lagrangian particles from the core jet might improve the predictive capabilities of such simulations. This study discusses a corresponding model proposed in the literature and demonstrates its application for a Large Eddy Simulation of a complex Diesel-like spray. The results indicate a promising performance, but also highlight the need for further investigation.

Source: Flow Turbulence and Combustion

DOI: 10.1007/s10494-025-00708-w

Authors: Elias Trautner, Markus Klein

Institution: Universität der Bundeswehr München

Language: English

Topic: Fluid Dynamics and Heat Transfer

Subfield: Computational Mechanics

Field: Engineering

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid: $2,590

Funder: Universität der Bundeswehr München