Journal article

Large-eddy simulation of methane direct injection using the full injector geometry

MR Yosri, JZ Ho, M Meulemans, M Talei, RL Gordon, MJ Brear, D Cosby, JS Lacey

FUEL | ELSEVIER SCI LTD | Published : 2021

Abstract

Understanding the mixing process of under-expanded gaseous-fuel jets from an outward opening injector is essential for developing Direct Injection (DI) internal combustion engines. This paper presents a Large-Eddy Simulation (LES) study of the DI of methane into a Constant Volume Chamber (CVC), considering the full, internal geometry of a prototype injector. Four cases at conditions relevant to Compressed Natural Gas (CNG) DI engines are investigated, with methane as a surrogate for CNG. A new post-processing method permits the 3D LES field to be projected into a 2D density gradient field that can be compared to a schlieren image. The LES results are then validated against high-speed, schlie..

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Grants

Awarded by Australian Research Council (ARC)


Awarded by ARC through the DECRA Fellowship


Funding Acknowledgements

This research was supported by the Australian Research Council (ARC) [LP160100339] and the Ford Motor Company. Mohsen Talei also acknowledges the support of the ARC through the DECRA Fellowship (DE180100416). We also would like to thank Continental for providing the prototype DI CNG injector hardware.