dc.citation.conferencePlace |
JA |
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dc.citation.title |
12th Asia-Pacific Conference on Combustion, ASPACC 2019 |
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dc.contributor.author |
Yu, Gwang Hyeon |
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dc.contributor.author |
Luong, Minh Bau |
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dc.contributor.author |
Chung, Suk Ho |
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dc.contributor.author |
Yoo, Chun Sang |
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dc.date.accessioned |
2024-02-01T00:07:10Z |
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dc.date.available |
2024-02-01T00:07:10Z |
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dc.date.created |
2019-12-18 |
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dc.date.issued |
2019-07-03 |
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dc.description.abstract |
The ignition characteristics of a temporally evolving n-heptane jet under reactivity controlled compression ignition (RCCI) conditions are investigated using 2-D direct numerical simulation with a 116-species PRF reduced mechanism. For RCCI combustion, n-heptane and iso-octane are selected as two different fuels that have opposite ignition characteristics. In real engine, relatively-low reactivity fuel is delivered by port-fuel injection and relatively-high reactivity fuel is directly injected. Thus, the ignition characteristics of temporally evolving jet can be investigated with different jet velocity, U0. It is found that the first-stage ignition kernels occur within n-heptane jet near the mixing layer and develop into low temperature flame, propagating into relatively fuel-rich mixture of n-heptane jet. The high temperature ignition kernel is also formed in the nheptane jet, and then rapidly propagate into both relatively fuel-rich n-heptane jet and fuel-lean iso-octane/air mixture. Finally, the end-gas autoignition occurs. It is also found that the first- and second-stage ignitions occur quickly with increasing U0; the overall combustion is prolonged and the peak of heat release rate is reduced with increasing U0. |
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dc.identifier.bibliographicCitation |
12th Asia-Pacific Conference on Combustion, ASPACC 2019 |
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dc.identifier.scopusid |
2-s2.0-85070852650 |
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dc.identifier.uri |
https://scholarworks.unist.ac.kr/handle/201301/79538 |
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dc.language |
영어 |
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dc.publisher |
The Combustion Society of Japan |
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dc.title |
Direct numerical simulations of the ignition of temporally evolving n-heptane jet under RCCI combustion-relevant conditions |
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dc.type |
Conference Paper |
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dc.date.conferenceDate |
2019-07-01 |
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