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Title: Development of a Hybrid Lagrangian–Eulerian Model to Describe Spark-Ignition Processes at Engine-Like Turbulent Flow Conditions

Abstract

With the engine technology moving toward more challenging (highly dilute and boosted) operation, spark-ignition processes play a key role in determining flame propagation and completeness of the combustion process. On the computational side, there is plenty of spark-ignition models available in literature and validated under conventional, stoichiometric spark ignition (SI) operation. Nevertheless, these models need to be expanded and developed on more physical grounds since at challenging operation they are not truly predictive. This paper reports on the development of a dedicated model for the spark-ignition event at nonquiescent, engine-like conditions, performed in the commercial CFD code converge. The developed methodology leverages previous findings that have expanded the use and improved the accuracy of Eulerian-type energy deposition models. In this work, the Eulerian energy deposition is coupled at every computational time-step with a Lagrangian-type evolution of the spark channel. Typical features such as spark channel elongation, stretch, and attachment to the electrodes are properly described to deliver realistic energy deposition along the channel during the entire ignition process. The numerical results are validated against schlieren images from an optical constant volume chamber and show the improvement in the simulation of the spark channel during the entire ignition event, with respectmore » to the most commonly used energy deposition approach. Further developmental pathways are discussed to provide more physics-based features from the developed ignition model in the future.« less

Authors:
 [1];  [1];  [1];  [1];  [2];  [2];  [2];  [3];  [3]
  1. Argonne National Lab. (ANL), Argonne, IL (United States)
  2. Convergent Science, Inc., Madison, WI (United States)
  3. Michigan Technological Univ., Houghton, MI (United States)
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Vehicle Technologies Office (EE-3V)
OSTI Identifier:
1561220
Grant/Contract Number:  
[AC02-06CH11357]
Resource Type:
Accepted Manuscript
Journal Name:
Journal of Engineering for Gas Turbines and Power
Additional Journal Information:
[ Journal Volume: 141; Journal Issue: 9]; Journal ID: ISSN 0742-4795
Publisher:
ASME
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; engines; combustion; computational fluid dynamics; electrodes; flames; flow (dynamics); ignition; simulation; turbulence

Citation Formats

Scarcelli, Riccardo, Zhang, Anqi, Wallner, Thomas, Som, Sibendu, Huang, Jing, Wijeyakulasuriya, Sameera, Mao, Yijin, Zhu, Xiucheng, and Lee, Seong-Young. Development of a Hybrid Lagrangian–Eulerian Model to Describe Spark-Ignition Processes at Engine-Like Turbulent Flow Conditions. United States: N. p., 2019. Web. doi:10.1115/1.4043397.
Scarcelli, Riccardo, Zhang, Anqi, Wallner, Thomas, Som, Sibendu, Huang, Jing, Wijeyakulasuriya, Sameera, Mao, Yijin, Zhu, Xiucheng, & Lee, Seong-Young. Development of a Hybrid Lagrangian–Eulerian Model to Describe Spark-Ignition Processes at Engine-Like Turbulent Flow Conditions. United States. doi:10.1115/1.4043397.
Scarcelli, Riccardo, Zhang, Anqi, Wallner, Thomas, Som, Sibendu, Huang, Jing, Wijeyakulasuriya, Sameera, Mao, Yijin, Zhu, Xiucheng, and Lee, Seong-Young. Wed . "Development of a Hybrid Lagrangian–Eulerian Model to Describe Spark-Ignition Processes at Engine-Like Turbulent Flow Conditions". United States. doi:10.1115/1.4043397.
@article{osti_1561220,
title = {Development of a Hybrid Lagrangian–Eulerian Model to Describe Spark-Ignition Processes at Engine-Like Turbulent Flow Conditions},
author = {Scarcelli, Riccardo and Zhang, Anqi and Wallner, Thomas and Som, Sibendu and Huang, Jing and Wijeyakulasuriya, Sameera and Mao, Yijin and Zhu, Xiucheng and Lee, Seong-Young},
abstractNote = {With the engine technology moving toward more challenging (highly dilute and boosted) operation, spark-ignition processes play a key role in determining flame propagation and completeness of the combustion process. On the computational side, there is plenty of spark-ignition models available in literature and validated under conventional, stoichiometric spark ignition (SI) operation. Nevertheless, these models need to be expanded and developed on more physical grounds since at challenging operation they are not truly predictive. This paper reports on the development of a dedicated model for the spark-ignition event at nonquiescent, engine-like conditions, performed in the commercial CFD code converge. The developed methodology leverages previous findings that have expanded the use and improved the accuracy of Eulerian-type energy deposition models. In this work, the Eulerian energy deposition is coupled at every computational time-step with a Lagrangian-type evolution of the spark channel. Typical features such as spark channel elongation, stretch, and attachment to the electrodes are properly described to deliver realistic energy deposition along the channel during the entire ignition process. The numerical results are validated against schlieren images from an optical constant volume chamber and show the improvement in the simulation of the spark channel during the entire ignition event, with respect to the most commonly used energy deposition approach. Further developmental pathways are discussed to provide more physics-based features from the developed ignition model in the future.},
doi = {10.1115/1.4043397},
journal = {Journal of Engineering for Gas Turbines and Power},
number = [9],
volume = [141],
place = {United States},
year = {2019},
month = {6}
}

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