File Download
There are no files associated with this item.
Links for fulltext
(May Require Subscription)
- Publisher Website: 10.1016/j.scs.2019.101619
- Scopus: eid_2-s2.0-85067061231
- WOS: WOS:000484255800009
- Find via
Supplementary
- Citations:
- Appears in Collections:
Article: Wind driven 'pumping' fluid flow and turbulent mean oscillation across high-rise building enclosures with multiple naturally ventilated apertures
Title | Wind driven 'pumping' fluid flow and turbulent mean oscillation across high-rise building enclosures with multiple naturally ventilated apertures |
---|---|
Authors | |
Keywords | Full CFD simulation Single-sided ventilation Vortex shedding Contaminant dispersion |
Issue Date | 2019 |
Publisher | Elsevier BV. The Journal's web site is located at http://www.journals.elsevier.com/sustainable-cities-and-society/ |
Citation | Sustainable Cities and Society, 2019, v. 50, p. article no. 101619 How to Cite? |
Abstract | This paper presents a study on the impact of incoming wind velocity magnitudes and horizontal aperture separations on natural ventilation flows in a single-sided wind-driven naturally ventilated building with two apertures (SS2) on the rear wall or the front wall. Both the velocity fields and the contaminant concentration fields were simulated and investigated. The present study is based on CFD simulations with unsteady Reynolds-averaged Navier-Stokes (URANS) SST k-ω model. A vortex shedding flow mechanism has been identified when the two apertures are mounted either on the rear wall or on the front wall, through which the air flow oscillates at a certain rate. CFD results further demonstrate that the oscillating frequency increases with the incoming wind magnitude and is nearly independent of the horizontal aperture separations. For the same building configuration, the root mean square (r.m.s) of the non-dimensional ventilation flow rate is independent of the incoming wind speed, whereas it decreases when the horizontal aperture separation is reduced. The time-averaged contaminant concentration fields also validated the different ventilation performance of different aperture configurations. This novel ventilation mechanism could be applied to alleviate the poor ventilation performance of buildings with single-sided apertures. |
Persistent Identifier | http://hdl.handle.net/10722/278205 |
ISSN | 2023 Impact Factor: 10.5 2023 SCImago Journal Rankings: 2.545 |
ISI Accession Number ID |
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Zhong, HY | - |
dc.contributor.author | Zhang, DD | - |
dc.contributor.author | Liu, Y | - |
dc.contributor.author | Liu, D | - |
dc.contributor.author | Zhao, FY | - |
dc.contributor.author | Li, Y | - |
dc.date.accessioned | 2019-10-04T08:09:30Z | - |
dc.date.available | 2019-10-04T08:09:30Z | - |
dc.date.issued | 2019 | - |
dc.identifier.citation | Sustainable Cities and Society, 2019, v. 50, p. article no. 101619 | - |
dc.identifier.issn | 2210-6707 | - |
dc.identifier.uri | http://hdl.handle.net/10722/278205 | - |
dc.description.abstract | This paper presents a study on the impact of incoming wind velocity magnitudes and horizontal aperture separations on natural ventilation flows in a single-sided wind-driven naturally ventilated building with two apertures (SS2) on the rear wall or the front wall. Both the velocity fields and the contaminant concentration fields were simulated and investigated. The present study is based on CFD simulations with unsteady Reynolds-averaged Navier-Stokes (URANS) SST k-ω model. A vortex shedding flow mechanism has been identified when the two apertures are mounted either on the rear wall or on the front wall, through which the air flow oscillates at a certain rate. CFD results further demonstrate that the oscillating frequency increases with the incoming wind magnitude and is nearly independent of the horizontal aperture separations. For the same building configuration, the root mean square (r.m.s) of the non-dimensional ventilation flow rate is independent of the incoming wind speed, whereas it decreases when the horizontal aperture separation is reduced. The time-averaged contaminant concentration fields also validated the different ventilation performance of different aperture configurations. This novel ventilation mechanism could be applied to alleviate the poor ventilation performance of buildings with single-sided apertures. | - |
dc.language | eng | - |
dc.publisher | Elsevier BV. The Journal's web site is located at http://www.journals.elsevier.com/sustainable-cities-and-society/ | - |
dc.relation.ispartof | Sustainable Cities and Society | - |
dc.subject | Full CFD simulation | - |
dc.subject | Single-sided ventilation | - |
dc.subject | Vortex shedding | - |
dc.subject | Contaminant dispersion | - |
dc.title | Wind driven 'pumping' fluid flow and turbulent mean oscillation across high-rise building enclosures with multiple naturally ventilated apertures | - |
dc.type | Article | - |
dc.identifier.email | Li, Y: liyg@hku.hk | - |
dc.identifier.authority | Li, Y=rp00151 | - |
dc.description.nature | link_to_subscribed_fulltext | - |
dc.identifier.doi | 10.1016/j.scs.2019.101619 | - |
dc.identifier.scopus | eid_2-s2.0-85067061231 | - |
dc.identifier.hkuros | 306609 | - |
dc.identifier.volume | 50 | - |
dc.identifier.spage | article no. 101619 | - |
dc.identifier.epage | article no. 101619 | - |
dc.identifier.isi | WOS:000484255800009 | - |
dc.publisher.place | Netherlands | - |
dc.identifier.issnl | 2210-6707 | - |