Full metadata record
DC Field | Value | Language |
---|---|---|
dc.citation.endPage | 431 | - |
dc.citation.number | 3 | - |
dc.citation.startPage | 411 | - |
dc.citation.title | BOUNDARY-LAYER METEOROLOGY | - |
dc.citation.volume | 174 | - |
dc.contributor.author | Park, Soo-Jin | - |
dc.contributor.author | Kim, Jae-Jin | - |
dc.contributor.author | Choi, Wonsik | - |
dc.contributor.author | Kim, Eun-Ryoung | - |
dc.contributor.author | Song, Chang-Keun | - |
dc.contributor.author | Pardyjak, Eric R. | - |
dc.date.accessioned | 2023-12-21T17:51:08Z | - |
dc.date.available | 2023-12-21T17:51:08Z | - |
dc.date.created | 2020-02-06 | - |
dc.date.issued | 2020-03 | - |
dc.description.abstract | We investigate the flow characteristics around step-up street canyons with various building aspect ratios (ratio of along-canyon building length to street-canyon width, and upwind building height to downwind building height) using a computational fluid dynamics (CFD) model. Simulated results are validated against experimental wind-tunnel results, with the CFD simulations conducted under the same building configurations as those in the wind-tunnel experiments. The CFD model reproduces the measured in-canyon vortex, rooftop recirculation zone above the downwind building, and stagnation point position reasonably well. We analyze the flow characteristics, focusing on the structural change of the in-canyon flows and the interaction between the in- and around-canyon flows with the increase of building-length ratio. The in-canyon flows undergo development and mature stages as the building-length ratio increases. In the development stage (i.e., small building-length ratios), the position of the primary vortex wanders, and the incoming flow closely follows both the upstream and downstream building sidewalls. As a result, increasing momentum transfer from the upper layer contributes to a momentum increase in the in-canyon region, and the vorticity in the in-canyon region also increases. In the mature stage (i.e., large building-length ratios), the primary vortex stabilizes in position, and the incoming flow no longer follows the building sidewalls. This causes momentum loss through the street-canyon lateral boundaries. As the building-length ratio increases, momentum transfer from the upper layer slightly decreases, and the reverse flow, updraft, and streamwise flow in the in-canyon region also slightly decrease, resulting in vorticity reduction. | - |
dc.identifier.bibliographicCitation | BOUNDARY-LAYER METEOROLOGY, v.174, no.3, pp.411 - 431 | - |
dc.identifier.doi | 10.1007/s10546-019-00494-9 | - |
dc.identifier.issn | 0006-8314 | - |
dc.identifier.scopusid | 2-s2.0-85076903823 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/31138 | - |
dc.identifier.url | https://link.springer.com/article/10.1007/s10546-019-00494-9 | - |
dc.identifier.wosid | 000514801200004 | - |
dc.language | 영어 | - |
dc.publisher | Kluwer Academic Publishers | - |
dc.title | Flow Characteristics Around Step-Up Street Canyons with Various Building Aspect Ratios | - |
dc.type | Article | - |
dc.description.isOpenAccess | TRUE | - |
dc.relation.journalWebOfScienceCategory | Meteorology & Atmospheric Sciences | - |
dc.relation.journalResearchArea | Meteorology & Atmospheric Sciences | - |
dc.type.docType | Article | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.subject.keywordAuthor | Building-length aspect ratio | - |
dc.subject.keywordAuthor | Computational fluid dynamics model | - |
dc.subject.keywordAuthor | Development and mature stages | - |
dc.subject.keywordAuthor | Flow characteristics | - |
dc.subject.keywordAuthor | Step-up street canyon | - |
dc.subject.keywordPlus | LARGE-EDDY SIMULATION | - |
dc.subject.keywordPlus | POLLUTANT DISPERSION | - |
dc.subject.keywordPlus | AIR-FLOW | - |
dc.subject.keywordPlus | REACTIVE POLLUTANTS | - |
dc.subject.keywordPlus | WIND DIRECTION | - |
dc.subject.keywordPlus | CFD MODEL | - |
dc.subject.keywordPlus | VALIDATION | - |
dc.subject.keywordPlus | STRATIFICATION | - |
dc.subject.keywordPlus | TRANSPORT | - |
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