Under-expanded jets characterization by means of CFD numerical simulation using an Open FOAM density-based solver Università degli Studi dell'Aquila

Format:

Book

Conference/Event

Author/Creator:

Duronio, Francesco, author.

Contributor:

Allocca, Luigi

De Vita, Angelo

Montanaro, Alessandro

Ranieri, Stefano

Conference Name:

15th International Conference on Engines & Vehicles (2021-09-12 : Capri, Italy)

Language:

English

Physical Description:

1 online resource cm

Place of Publication:

Warrendale, PA SAE International 2021

Summary:

Natural gas (NG) is regarded as a potential solution to improve the impact on the environmental of internal combustion engines. Low carbon-to-hydrogen ratio, worldwide relatively homogeneous distribution as reduced price are the reason because, lately, many researchers efforts have been put in this area. This work focuses the attention on the characterization of the injection process, to be performed directly in combustion chamber. Direct injection of a gaseous fuel involves the presence of under-expanded jets whose knowledge is fundamental to achieve the proper mixture formation prior to the combustion ignition. For this reason, a density-based solver was developed within the OpenFOAM library in order to simulate the jet issued from an injector suitable for direct injection of methane. The numerical investigations are supported by an experimental campaign performed through schlieren technique. The results obtained shed more light on the structure of under-expanded jets, the shock waves present, the flow field generated, and the evolution of the mixing activity depending on the injection parameters

Notes:

Vendor supplied data

Publisher Number:

2021-24-0057

Access Restriction:

Restricted for use by site license