dc.citation.conferencePlace |
US |
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dc.citation.title |
71st Annual Meeting of the APS Division of Fluid Dynamics |
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dc.contributor.author |
Lee, Young Mo |
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dc.contributor.author |
Hwang, Hyun Gyu |
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dc.contributor.author |
Lee, Jae Hwa |
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dc.date.accessioned |
2024-02-01T01:06:07Z |
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dc.date.available |
2024-02-01T01:06:07Z |
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dc.date.created |
2018-12-19 |
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dc.date.issued |
2018-11-18 |
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dc.description.abstract |
Large eddy simulation of a transitional boundary layer flow is performed to assess modified two-parameter mixed models. Because energy transfer between the grid-scale and subgrid-scale has to be modeled to characterize a transitional boundary layer flow, we combine the scale-similarity model and eddy viscosity model as a mixed model. For the proposed mixed models, the two model coefficients are determined by dynamic procedures and the effects of a stress tensor that involves the interaction between the resolved and unresolved scales are considered to estimate the proper energy exchange between large-scales and subgrid-scales. The proposed mixed model with the dynamic Smagorinsky model shows improved prediction in the skin-friction coefficient and shape factor in a transition region, compared to the earlier studies with various subgrid-scale models. The energy dissipation predicted by the present mixed model shows a good agreement with a filtered direct numerical simulation data, although the magnitude of the modeled dissipation is slightly underestimated. |
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dc.identifier.bibliographicCitation |
71st Annual Meeting of the APS Division of Fluid Dynamics |
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dc.identifier.uri |
https://scholarworks.unist.ac.kr/handle/201301/80399 |
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dc.language |
영어 |
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dc.publisher |
American Physical Socieity |
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dc.title |
Large eddy simulation of transitional boundary layer flow with two-parameter mixed models |
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dc.type |
Conference Paper |
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dc.date.conferenceDate |
2018-11-18 |
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