Investigations on Hydrogen Injections Using a Real-Fluid Approach Universita degli Studi di Perugia

Format:

Book

Conference/Event

Author/Creator:

Rahantamialisoa, Faniry, author.

Contributor:

Battistoni, Michele

Miliozzi, Alessio

Sahranavardfard, Nasrin

Zembi, Jacopo

Conference Name:

WCX SAE World Congress Experience (2023-04-18 : Detroit, Michigan, United States)

Language:

English

Physical Description:

1 online resource cm

Place of Publication:

Warrendale, PA SAE International 2023

Summary:

Computational fluid dynamics is used with the aim to gain further insights of the hydrogen injection process in internal combustion engines. To this end, three-dimensional RANS simulations of hydrogen under-expanded jets under a variety of injection pressures and temperatures and chamber backpressure are performed. A numerical framework that accounts for real-fluid effects is used which includes accurate non-linear mixing rules for thermodynamic and transport properties with multiple species. Jet formation process, transition to turbulent regime, and mixing process are investigated which are key aspects for the design of efficient injection and combustion. Different simulations are discussed to investigate the structures in the near field, such as Mach disk, barrel, and reflected shocks. It is found that for direct injection applications, especially in high back-pressure cases, accounting for real fluid behavior of hydrogen-air mixtures is important for accurate predictions

Notes:

Vendor supplied data

Publisher Number:

2023-01-0312

Access Restriction:

Restricted for use by site license