Effects of detailed geometry and real fluid thermodynamics on Spray G atomization

Arienti, Marco; Wenzel, Everett A.; Sforzo, Brandon A.; Powell, Christopher F.

doi:10.1016/j.proci.2020.06.039

Effects of detailed geometry and real fluid thermodynamics on Spray G atomization

Journal Article · Wed Sep 22 00:00:00 EDT 2021 · Proceedings of the Combustion Institute

DOI:https://doi.org/10.1016/j.proci.2020.06.039· OSTI ID:1819590

^[1]; Wenzel, Everett A. ^[1]; ^[2]; ^[2]

Sandia National Lab. (SNL-CA), Livermore, CA (United States)
Argonne National Lab. (ANL), Argonne, IL (United States)

We present recent results toward the quantification of spray characteristics at engine conditions for an eight-hole counter-bored (stepped) GDI injector-Spray G in the ECN denomination. This computational study is characterized by two novel features: the detailed description of a real injector's internal surfaces via tomographic reconstruction; and a general equation of state that represents the thermodynamic properties of homogeneous liquid-vapor mixtures. The combined level-set moment-of-fluid approach, coupled to an embedded boundary formulation for moving solid walls, makes it possible to seamlessly connect the injector's internal flow to the spray. The Large Eddy Simulation (LES) discussed here presents evidence of partial hydraulic flipping and, during the closing transient, string cavitation. Results are validated by measurements of spray density profiles and droplet size distribution.

View Accepted Manuscript (DOE)

Research Organization:: Argonne National Laboratory (ANL), Argonne, IL (United States)

Sponsoring Organization:: USDOE; USDOE National Nuclear Security Administration (NNSA); USDOE Office of Energy Efficiency and Renewable Energy (EERE), Transportation Office. Vehicle Technologies Office

Grant/Contract Number:: AC02-06CH11357; NA0003525

OSTI ID:: 1819590

Alternate ID(s):: OSTI ID: 1809655

Journal Information:: Proceedings of the Combustion Institute, Journal Name: Proceedings of the Combustion Institute Journal Issue: 2 Vol. 38; ISSN 1540-7489

Publisher:: ElsevierCopyright Statement

Country of Publication:: United States

Language:: English

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computed tomography
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Effects of detailed geometry and real fluid thermodynamics on Spray G atomization

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