A comprehensive model to capture electrical discharge and spark channel evolution during spark-ignition processes

Kazmouz, Samuel J.; Scarcelli, Riccardo; Bresler, Matthew; Blash, Eric; Hardman, Ken

doi:10.1016/j.combustflame.2022.112589

A comprehensive model to capture electrical discharge and spark channel evolution during spark-ignition processes

Journal Article · Tue Dec 27 23:00:00 EST 2022 · Combustion and Flame

DOI:https://doi.org/10.1016/j.combustflame.2022.112589· OSTI ID:1958186

^[1]; ^[1]; ^[2]; Blash, Eric ^[2]; Hardman, Ken ^[2]

Argonne National Lab. (ANL), Lemont, IL (United States)
FCA US LLC, Auburn Hills, MI (United States)

Emissions reduction through engine efficiency improvements is a priority for automakers who have turned to unconventional engine operation such as highly dilute, boosted, and stratified charge. Given its importance to flame initiation and sustained turbulent flame propagation, reliable and accurate spark ignition models are necessary to design ignition systems that reduce cyclic indicated mean effective pressure (IMEP) variability and increase engine efficiency in these operation modes. In this paper, secondary electric circuit, short-circuit, blowout, and re-strike sub-models are added to the Lagrangian-Eulerian spark ignition (LESI) model to simulate electrical discharge and spark channel elongation in an inert cross-flow combustion vessel. First, the physics of the underlying sub-models are described and the governing equations discussed with the spark channel voltage expression playing a critical role. Then, the experimental and simulations setups are presented. The results section begins with the derivation of spark channel voltage from experimental results. Then, electrical discharge and spark channel elongation simulations in inert flows are carried out using LESI and compared against experimental results. Finally, the results validate the model's ability to accurately predict spark channel elongation, as well as the occurrence of short-circuits, blowouts, re-strikes, and end of discharge.

View Accepted Manuscript (DOE)

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

Sponsoring Organization:: USDOE Office of Energy Efficiency and Renewable Energy (EERE), Office of Sustainable Transportation. Vehicle Technologies Office (VTO)

Grant/Contract Number:: AC02-06CH11357

OSTI ID:: 1958186

Journal Information:: Combustion and Flame, Journal Name: Combustion and Flame Vol. 248; ISSN 0010-2180

Publisher:: ElsevierCopyright Statement

Country of Publication:: United States

Language:: English

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A comprehensive model to capture electrical discharge and spark channel evolution during spark-ignition processes

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