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Article: Nonlinear dynamic analysis of natural ventilation in a two-zone building: Part A - Theoretical analysis

TitleNonlinear dynamic analysis of natural ventilation in a two-zone building: Part A - Theoretical analysis
Authors
Issue Date2006
PublisherAmerican Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc.
Citation
Hvac And R Research, 2006, v. 12 n. 2, p. 231-255 How to Cite?
AbstractThe nonlinear behavior and solution multiplicity of airflow and natural ventilation in multi-zone buildings are significant for building ventilation and smoke control design. A two-zone building with four openings is considered in this study. Nonlinear dynamic behaviors are analyzed, and we report on the fixed points (steady-state solutions) and their stability and provide a description of the bifurcation of the fixed points and an estimation of the separating curve between two stable fixed points. Different flow modes were identified with the same physical and boundary conditions. A multi-zone airflow and thermal coupled program was also used to evaluate the results. There was good agreement between the numerical and theoretical solutions, except that the unsteady-state solutions could not be predicted by the multi-zone program. These results may have significant implications for multi-zone modeling of natural ventilation and smoke or contaminant spread in buildings, as well as allow us to gain a good understanding of physical flow behavior and solution multiplicity.
Persistent Identifierhttp://hdl.handle.net/10722/75717
ISSN
2015 Impact Factor: 0.871
References

 

DC FieldValueLanguage
dc.contributor.authorYang, Len_HK
dc.contributor.authorXu, Pen_HK
dc.contributor.authorLi, Yen_HK
dc.date.accessioned2010-09-06T07:13:53Z-
dc.date.available2010-09-06T07:13:53Z-
dc.date.issued2006en_HK
dc.identifier.citationHvac And R Research, 2006, v. 12 n. 2, p. 231-255en_HK
dc.identifier.issn1078-9669en_HK
dc.identifier.urihttp://hdl.handle.net/10722/75717-
dc.description.abstractThe nonlinear behavior and solution multiplicity of airflow and natural ventilation in multi-zone buildings are significant for building ventilation and smoke control design. A two-zone building with four openings is considered in this study. Nonlinear dynamic behaviors are analyzed, and we report on the fixed points (steady-state solutions) and their stability and provide a description of the bifurcation of the fixed points and an estimation of the separating curve between two stable fixed points. Different flow modes were identified with the same physical and boundary conditions. A multi-zone airflow and thermal coupled program was also used to evaluate the results. There was good agreement between the numerical and theoretical solutions, except that the unsteady-state solutions could not be predicted by the multi-zone program. These results may have significant implications for multi-zone modeling of natural ventilation and smoke or contaminant spread in buildings, as well as allow us to gain a good understanding of physical flow behavior and solution multiplicity.en_HK
dc.languageengen_HK
dc.publisherAmerican Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc.en_HK
dc.relation.ispartofHVAC and R Researchen_HK
dc.titleNonlinear dynamic analysis of natural ventilation in a two-zone building: Part A - Theoretical analysisen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=1078-9669&volume=12&issue=2&spage=231&epage=256&date=2006&atitle=Nonlinear+dynamic+analysis+of+natural+ventilation+in+a+two-zone+building:+Part+A+-+Theoretical+analysisen_HK
dc.identifier.emailLi, Y:liyg@hkucc.hku.hken_HK
dc.identifier.authorityLi, Y=rp00151en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.scopuseid_2-s2.0-33744454919en_HK
dc.identifier.hkuros118210en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-33744454919&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume12en_HK
dc.identifier.issue2en_HK
dc.identifier.spage231en_HK
dc.identifier.epage255en_HK
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridYang, L=13806737800en_HK
dc.identifier.scopusauthoridXu, P=8440784800en_HK
dc.identifier.scopusauthoridLi, Y=7502094052en_HK

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