CFD simulations of flow and dust dispersion in a realistic urban area
Fluid flow and dust transportation in a realistic urban residential community under dust storm weather conditions are investigated using computational fluid dynamics (CFD) with a grid resolution of several meters. The dust transportation and concentration distribution are obtained through the Lagran...
Main Authors: | , , , , |
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Format: | Article |
Language: | English |
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Taylor & Francis Group
2016-01-01
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Series: | Engineering Applications of Computational Fluid Mechanics |
Subjects: | |
Online Access: | http://dx.doi.org/10.1080/19942060.2016.1150205 |
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author | Kun Luo HaiJun Yu Zhixiang Dai MingMing Fang Jianren Fan |
author_facet | Kun Luo HaiJun Yu Zhixiang Dai MingMing Fang Jianren Fan |
author_sort | Kun Luo |
collection | DOAJ |
description | Fluid flow and dust transportation in a realistic urban residential community under dust storm weather conditions are investigated using computational fluid dynamics (CFD) with a grid resolution of several meters. The dust transportation and concentration distribution are obtained through the Lagrangian-formulated discrete particle model by integrating the particle velocity between certain time intervals. The fluid flow is solved by the realizable $ k - \varepsilon $ model. It is found that the dust transportation and distribution are very closely related to the flow field. The flow field in a real residential community is very complicated. When the building axes are perpendicular to the wind direction, the flows resemble the classic street canyon flow. Places with a low wind speed and high vorticity usually have a high dust concentration. As the wind direction changes, the fluid flow and dust distribution differ from case to case, but the general features are kept. In addition, the building shape and particle-wall interaction conditions have additional effects on the dust distribution, which need further study in the future. |
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id | doaj.art-d0c52d265b0f47aa99c9dfe2c0ebabf4 |
institution | Directory Open Access Journal |
issn | 1994-2060 1997-003X |
language | English |
last_indexed | 2024-04-12T17:38:58Z |
publishDate | 2016-01-01 |
publisher | Taylor & Francis Group |
record_format | Article |
series | Engineering Applications of Computational Fluid Mechanics |
spelling | doaj.art-d0c52d265b0f47aa99c9dfe2c0ebabf42022-12-22T03:22:52ZengTaylor & Francis GroupEngineering Applications of Computational Fluid Mechanics1994-20601997-003X2016-01-0110122824210.1080/19942060.2016.11502051150205CFD simulations of flow and dust dispersion in a realistic urban areaKun Luo0HaiJun Yu1Zhixiang Dai2MingMing Fang3Jianren Fan4Zhejiang UniversityZhejiang UniversityZhejiang UniversityZhejiang UniversityZhejiang UniversityFluid flow and dust transportation in a realistic urban residential community under dust storm weather conditions are investigated using computational fluid dynamics (CFD) with a grid resolution of several meters. The dust transportation and concentration distribution are obtained through the Lagrangian-formulated discrete particle model by integrating the particle velocity between certain time intervals. The fluid flow is solved by the realizable $ k - \varepsilon $ model. It is found that the dust transportation and distribution are very closely related to the flow field. The flow field in a real residential community is very complicated. When the building axes are perpendicular to the wind direction, the flows resemble the classic street canyon flow. Places with a low wind speed and high vorticity usually have a high dust concentration. As the wind direction changes, the fluid flow and dust distribution differ from case to case, but the general features are kept. In addition, the building shape and particle-wall interaction conditions have additional effects on the dust distribution, which need further study in the future.http://dx.doi.org/10.1080/19942060.2016.1150205Computational fluid dynamics (CFD)dust stormdiscrete particle methodurban areaparticle-wall interaction |
spellingShingle | Kun Luo HaiJun Yu Zhixiang Dai MingMing Fang Jianren Fan CFD simulations of flow and dust dispersion in a realistic urban area Engineering Applications of Computational Fluid Mechanics Computational fluid dynamics (CFD) dust storm discrete particle method urban area particle-wall interaction |
title | CFD simulations of flow and dust dispersion in a realistic urban area |
title_full | CFD simulations of flow and dust dispersion in a realistic urban area |
title_fullStr | CFD simulations of flow and dust dispersion in a realistic urban area |
title_full_unstemmed | CFD simulations of flow and dust dispersion in a realistic urban area |
title_short | CFD simulations of flow and dust dispersion in a realistic urban area |
title_sort | cfd simulations of flow and dust dispersion in a realistic urban area |
topic | Computational fluid dynamics (CFD) dust storm discrete particle method urban area particle-wall interaction |
url | http://dx.doi.org/10.1080/19942060.2016.1150205 |
work_keys_str_mv | AT kunluo cfdsimulationsofflowanddustdispersioninarealisticurbanarea AT haijunyu cfdsimulationsofflowanddustdispersioninarealisticurbanarea AT zhixiangdai cfdsimulationsofflowanddustdispersioninarealisticurbanarea AT mingmingfang cfdsimulationsofflowanddustdispersioninarealisticurbanarea AT jianrenfan cfdsimulationsofflowanddustdispersioninarealisticurbanarea |