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Article: Some examples of solution multiplicity in natural ventilation

TitleSome examples of solution multiplicity in natural ventilation
Authors
KeywordsAnalytical methods
Multi-zone simulation
Natural ventilation
Thermal buoyancy
Winds
Issue Date2001
PublisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/buildenv
Citation
Building And Environment, 2001, v. 36 n. 7, p. 851-858 How to Cite?
AbstractThis paper shows that under certain conditions, multiple solutions for the flow rate exist in a natural ventilation system, induced by the non-linear interaction between bouyancy and wind forces. Under certain physical simplifications, the system is governed in steady state by a non-linear algebraic equation or a system of equations. Three examples are given here: a single-zone building with two openings, a channel with two end openings, and a two-zone building with two openings in each zone. Analytical and numerical solutions are presented. It is shown that in all three cases the flow rate exhibits hysteresis. These results have significant implications for multi-zone modelling of natural ventilation and smoke spread in buildings. An experimental investigation using a small-scale model in a water tunnel confirms that two steady-state solutions exist for a single-zone building. © 2001 Elsevier Science Ltd. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/76080
ISSN
2015 Impact Factor: 3.394
2015 SCImago Journal Rankings: 2.121
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorLi, Yen_HK
dc.contributor.authorDelsante, Aen_HK
dc.contributor.authorChen, Zen_HK
dc.contributor.authorSandberg, Men_HK
dc.contributor.authorAndersen, Aen_HK
dc.contributor.authorBjerre, Men_HK
dc.contributor.authorHeiselberg, Pen_HK
dc.date.accessioned2010-09-06T07:17:27Z-
dc.date.available2010-09-06T07:17:27Z-
dc.date.issued2001en_HK
dc.identifier.citationBuilding And Environment, 2001, v. 36 n. 7, p. 851-858en_HK
dc.identifier.issn0360-1323en_HK
dc.identifier.urihttp://hdl.handle.net/10722/76080-
dc.description.abstractThis paper shows that under certain conditions, multiple solutions for the flow rate exist in a natural ventilation system, induced by the non-linear interaction between bouyancy and wind forces. Under certain physical simplifications, the system is governed in steady state by a non-linear algebraic equation or a system of equations. Three examples are given here: a single-zone building with two openings, a channel with two end openings, and a two-zone building with two openings in each zone. Analytical and numerical solutions are presented. It is shown that in all three cases the flow rate exhibits hysteresis. These results have significant implications for multi-zone modelling of natural ventilation and smoke spread in buildings. An experimental investigation using a small-scale model in a water tunnel confirms that two steady-state solutions exist for a single-zone building. © 2001 Elsevier Science Ltd. All rights reserved.en_HK
dc.languageengen_HK
dc.publisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/buildenven_HK
dc.relation.ispartofBuilding and Environmenten_HK
dc.subjectAnalytical methodsen_HK
dc.subjectMulti-zone simulationen_HK
dc.subjectNatural ventilationen_HK
dc.subjectThermal buoyancyen_HK
dc.subjectWindsen_HK
dc.titleSome examples of solution multiplicity in natural ventilationen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0360-1323&volume=36&spage=851&epage=858&date=2001&atitle=Some+examples+of+solution+multiplicity+in+natural+ventilationen_HK
dc.identifier.emailLi, Y:liyg@hkucc.hku.hken_HK
dc.identifier.authorityLi, Y=rp00151en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/S0360-1323(01)00011-7en_HK
dc.identifier.scopuseid_2-s2.0-0035427169en_HK
dc.identifier.hkuros68507en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0035427169&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume36en_HK
dc.identifier.issue7en_HK
dc.identifier.spage851en_HK
dc.identifier.epage858en_HK
dc.identifier.isiWOS:000169515000008-
dc.publisher.placeUnited Kingdomen_HK
dc.identifier.scopusauthoridLi, Y=7502094052en_HK
dc.identifier.scopusauthoridDelsante, A=6602133488en_HK
dc.identifier.scopusauthoridChen, Z=7409481918en_HK
dc.identifier.scopusauthoridSandberg, M=35585315900en_HK
dc.identifier.scopusauthoridAndersen, A=7402511091en_HK
dc.identifier.scopusauthoridBjerre, M=6506248219en_HK
dc.identifier.scopusauthoridHeiselberg, P=6602100825en_HK

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