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Article: Turbulence and dispersion studies using a three-dimensional second-order closure Eulerian model

TitleTurbulence and dispersion studies using a three-dimensional second-order closure Eulerian model
Authors
Issue Date2001
PublisherAmerican Meteorological Society. The Journal's web site is located at http://www.ametsoc.org/ams
Citation
Journal of Applied Meteorology, 2001, v. 40 n. 1, p. 92-113 How to Cite?
AbstractA three-dimensional second-order closure meteorological and pollutant dispersion model is developed, and the computed results are evaluated. A finite-element method is used to solve the governing equations because of its versatility in handling variable-resolution meshes and complex geometries. The one-dimensional version of this model is used to simulate a 24-h diurnal cycle for a horizontally homogeneous atmospheric boundary layer in neutral, stable, and unstable stratifications. The simulated turbulence fields under a convective boundary layer act as the background turbulence for simulating cases of three-dimensional pollutant dispersion from elevated point sources. The simulated turbulence and pollutant distribution compared well with experimental observations and with other numerical models, ensuring the validity of the adopted mathematical formulation as well as the developed model. The computed results provide an overview of turbulence structures in different atmospheric stabilities and are helpful to enhance understanding of the characteristics of air pollutant dispersion, such as plume rise and descent in a convective boundary layer. The current study suggests the need for an insightful and practical numerical model to perform air-quality analysis, one that is capable of overcoming the weaknesses of traditional Gaussian plume and k-theory dispersion models.
Persistent Identifierhttp://hdl.handle.net/10722/156578
ISSN
2005 Impact Factor: 1.702
References

 

DC FieldValueLanguage
dc.contributor.authorLiu, CHen_US
dc.contributor.authorLeung, DYCen_US
dc.date.accessioned2012-08-08T08:43:03Z-
dc.date.available2012-08-08T08:43:03Z-
dc.date.issued2001en_US
dc.identifier.citationJournal of Applied Meteorology, 2001, v. 40 n. 1, p. 92-113en_US
dc.identifier.issn0894-8763en_US
dc.identifier.urihttp://hdl.handle.net/10722/156578-
dc.description.abstractA three-dimensional second-order closure meteorological and pollutant dispersion model is developed, and the computed results are evaluated. A finite-element method is used to solve the governing equations because of its versatility in handling variable-resolution meshes and complex geometries. The one-dimensional version of this model is used to simulate a 24-h diurnal cycle for a horizontally homogeneous atmospheric boundary layer in neutral, stable, and unstable stratifications. The simulated turbulence fields under a convective boundary layer act as the background turbulence for simulating cases of three-dimensional pollutant dispersion from elevated point sources. The simulated turbulence and pollutant distribution compared well with experimental observations and with other numerical models, ensuring the validity of the adopted mathematical formulation as well as the developed model. The computed results provide an overview of turbulence structures in different atmospheric stabilities and are helpful to enhance understanding of the characteristics of air pollutant dispersion, such as plume rise and descent in a convective boundary layer. The current study suggests the need for an insightful and practical numerical model to perform air-quality analysis, one that is capable of overcoming the weaknesses of traditional Gaussian plume and k-theory dispersion models.en_US
dc.languageengen_US
dc.publisherAmerican Meteorological Society. The Journal's web site is located at http://www.ametsoc.org/amsen_US
dc.relation.ispartofJournal of Applied Meteorologyen_US
dc.rightsJournal of Applied Meteorology. Copyright © American Meteorological Society.-
dc.titleTurbulence and dispersion studies using a three-dimensional second-order closure Eulerian modelen_US
dc.typeArticleen_US
dc.identifier.emailLiu, CH: chliu@hkucc.hku.hken_US
dc.identifier.emailLeung, DYC: ycleung@hku.hken_US
dc.identifier.authorityLiu, CH=rp00152en_US
dc.identifier.authorityLeung, DYC=rp00149en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.scopuseid_2-s2.0-0035090540en_US
dc.identifier.hkuros59299-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0035090540&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume40en_US
dc.identifier.issue1en_US
dc.identifier.spage92en_US
dc.identifier.epage113en_US
dc.publisher.placeUnited Statesen_US
dc.identifier.scopusauthoridLiu, CH=36065161300en_US
dc.identifier.scopusauthoridLeung, DYC=7203002484en_US

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