Direct Numerical Simulation of Preignition and Knock in Engine Conditions

Minh Bau Luong; Hong G. Im

doi:10.1007/978-981-16-2648-7_14

Direct Numerical Simulation of Preignition and Knock in Engine Conditions

Minh Bau Luong, Hong G. Im

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

7 Scopus citations

Abstract

Theoretical framework and high-fidelity direct numerical simulations (DNS) on preignition and knock encountered in internal combustion (IC) engines are briefly reviewed in this chapter. The theoretical framework is presented first, and systematically followed by one-dimensional and multi-dimensional simulations. A number of high-fidelity simulations under realistic IC-engine conditions were used to demonstrate the super-knock mechanism in the presence of the complex chemistry-turbulence interaction. The ratio of ignition delay time to eddy-turnover time, τig/ τt, and the ratio of the most energetic length scale of turbulence and temperature fluctuations, lt/ lT, affect the knock intensities are discussed. Different statistical metrics extracted from the multi-dimensional simulations to predict knock intensity are also presented. The quantitative determination of strong and weak ignition modes using the predicted Sa-based metrics is also cover in this chapter.

Original language	English (US)
Title of host publication	Green Energy and Technology
Publisher	Springer Singapore
Pages	311-336
Number of pages	26
ISBN (Print)	9789811626470
DOIs	https://doi.org/10.1007/978-981-16-2648-7_14
State	Published - Aug 8 2021

Bibliographical note

KAUST Repository Item: Exported on 2021-09-30
Acknowledgements: This work was sponsored by King Abdullah University of Science and Technology and used the resources of the KAUST Supercomputing Laboratory.

ASJC Scopus subject areas

Renewable Energy, Sustainability and the Environment
Energy Engineering and Power Technology
Industrial and Manufacturing Engineering
Management, Monitoring, Policy and Law

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1007/978-981-16-2648-7_14

https://repository.kaust.edu.sa/bitstream/10754/672028/1/bookChapter_DNS_preignition%20and%20knock%20in%20engine%20conditions_MinhBauLuong.pdf

Cite this

@inproceedings{d22054a23c5740fdae30d29236c620de,

title = "Direct Numerical Simulation of Preignition and Knock in Engine Conditions",

abstract = "Theoretical framework and high-fidelity direct numerical simulations (DNS) on preignition and knock encountered in internal combustion (IC) engines are briefly reviewed in this chapter. The theoretical framework is presented first, and systematically followed by one-dimensional and multi-dimensional simulations. A number of high-fidelity simulations under realistic IC-engine conditions were used to demonstrate the super-knock mechanism in the presence of the complex chemistry-turbulence interaction. The ratio of ignition delay time to eddy-turnover time, τig/ τt, and the ratio of the most energetic length scale of turbulence and temperature fluctuations, lt/ lT, affect the knock intensities are discussed. Different statistical metrics extracted from the multi-dimensional simulations to predict knock intensity are also presented. The quantitative determination of strong and weak ignition modes using the predicted Sa-based metrics is also cover in this chapter.",

author = "Luong, {Minh Bau} and Im, {Hong G.}",

note = "KAUST Repository Item: Exported on 2021-09-30 Acknowledgements: This work was sponsored by King Abdullah University of Science and Technology and used the resources of the KAUST Supercomputing Laboratory.",

year = "2021",

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doi = "10.1007/978-981-16-2648-7_14",

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T1 - Direct Numerical Simulation of Preignition and Knock in Engine Conditions

AU - Luong, Minh Bau

AU - Im, Hong G.

N1 - KAUST Repository Item: Exported on 2021-09-30 Acknowledgements: This work was sponsored by King Abdullah University of Science and Technology and used the resources of the KAUST Supercomputing Laboratory.

PY - 2021/8/8

Y1 - 2021/8/8

N2 - Theoretical framework and high-fidelity direct numerical simulations (DNS) on preignition and knock encountered in internal combustion (IC) engines are briefly reviewed in this chapter. The theoretical framework is presented first, and systematically followed by one-dimensional and multi-dimensional simulations. A number of high-fidelity simulations under realistic IC-engine conditions were used to demonstrate the super-knock mechanism in the presence of the complex chemistry-turbulence interaction. The ratio of ignition delay time to eddy-turnover time, τig/ τt, and the ratio of the most energetic length scale of turbulence and temperature fluctuations, lt/ lT, affect the knock intensities are discussed. Different statistical metrics extracted from the multi-dimensional simulations to predict knock intensity are also presented. The quantitative determination of strong and weak ignition modes using the predicted Sa-based metrics is also cover in this chapter.

AB - Theoretical framework and high-fidelity direct numerical simulations (DNS) on preignition and knock encountered in internal combustion (IC) engines are briefly reviewed in this chapter. The theoretical framework is presented first, and systematically followed by one-dimensional and multi-dimensional simulations. A number of high-fidelity simulations under realistic IC-engine conditions were used to demonstrate the super-knock mechanism in the presence of the complex chemistry-turbulence interaction. The ratio of ignition delay time to eddy-turnover time, τig/ τt, and the ratio of the most energetic length scale of turbulence and temperature fluctuations, lt/ lT, affect the knock intensities are discussed. Different statistical metrics extracted from the multi-dimensional simulations to predict knock intensity are also presented. The quantitative determination of strong and weak ignition modes using the predicted Sa-based metrics is also cover in this chapter.

UR - http://hdl.handle.net/10754/672028

UR - https://link.springer.com/10.1007/978-981-16-2648-7_14

UR - http://www.scopus.com/inward/record.url?scp=85115158710&partnerID=8YFLogxK

U2 - 10.1007/978-981-16-2648-7_14

DO - 10.1007/978-981-16-2648-7_14

M3 - Conference contribution

SN - 9789811626470

SP - 311

EP - 336

BT - Green Energy and Technology

PB - Springer Singapore

ER -

Direct Numerical Simulation of Preignition and Knock in Engine Conditions

Abstract

Bibliographical note

ASJC Scopus subject areas

UN SDGs

Access to Document

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