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Article: On the head-discharge relation of a duckbill elastomer check valve

TitleOn the head-discharge relation of a duckbill elastomer check valve
Authors
KeywordsCheck valve hydraulics
Diffuser design
Duckbill elastomer valves
Head-discharge relation
Rubber nozzle
Sea water intrusion
Sewage outfalls
Stormwater management
Issue Date2001
PublisherInternational Association of Hydraulic Engineering and Research.
Citation
Journal Of Hydraulic Research, 2001, v. 39 n. 6, p. 619-627 How to Cite?
AbstractDuckbill-shaped elastomer check valves are often installed on wastewater effluent diffusion systems and stormwater outfalls to prevent backflow or sea water intrusion Unlike fixed diameter ports, the jet velocity varies nonlinearly with port discharge flow. A new theory to predict the hydraulic characteristics of a duckbill elastomer check valve (DBV) is presented, and it provides a theoretical basis for the correlation of all DBV hydraulic data. It is shown that a DBV can be considered as a smooth converging nozzle. By modelling the duckbill valve as a two-dimensional rubber membrane, a theory is developed to relate the DBV material properties and flow conditions to the valve deformation. The valve opening area is predicted as a function of the driving pressure head; a linear head-discharge relation is predicted. The predictions are in excellent agreement with experimental data. The derived head-discharge relation can be readily incorporated into a diffuser internal hydraulics code to determine the variation of discharge flow and jet velocity along a multiport diffuser fitted with duckbill check valves.
Persistent Identifierhttp://hdl.handle.net/10722/71294
ISSN
2015 Impact Factor: 1.471
2015 SCImago Journal Rankings: 1.022
References

 

DC FieldValueLanguage
dc.contributor.authorLee, JHWen_HK
dc.contributor.authorWilkinson, DLen_HK
dc.contributor.authorWood, IRen_HK
dc.date.accessioned2010-09-06T06:30:41Z-
dc.date.available2010-09-06T06:30:41Z-
dc.date.issued2001en_HK
dc.identifier.citationJournal Of Hydraulic Research, 2001, v. 39 n. 6, p. 619-627en_HK
dc.identifier.issn0022-1686en_HK
dc.identifier.urihttp://hdl.handle.net/10722/71294-
dc.description.abstractDuckbill-shaped elastomer check valves are often installed on wastewater effluent diffusion systems and stormwater outfalls to prevent backflow or sea water intrusion Unlike fixed diameter ports, the jet velocity varies nonlinearly with port discharge flow. A new theory to predict the hydraulic characteristics of a duckbill elastomer check valve (DBV) is presented, and it provides a theoretical basis for the correlation of all DBV hydraulic data. It is shown that a DBV can be considered as a smooth converging nozzle. By modelling the duckbill valve as a two-dimensional rubber membrane, a theory is developed to relate the DBV material properties and flow conditions to the valve deformation. The valve opening area is predicted as a function of the driving pressure head; a linear head-discharge relation is predicted. The predictions are in excellent agreement with experimental data. The derived head-discharge relation can be readily incorporated into a diffuser internal hydraulics code to determine the variation of discharge flow and jet velocity along a multiport diffuser fitted with duckbill check valves.en_HK
dc.languageengen_HK
dc.publisherInternational Association of Hydraulic Engineering and Research.en_HK
dc.relation.ispartofJournal of Hydraulic Researchen_HK
dc.subjectCheck valve hydraulicsen_HK
dc.subjectDiffuser designen_HK
dc.subjectDuckbill elastomer valvesen_HK
dc.subjectHead-discharge relationen_HK
dc.subjectRubber nozzleen_HK
dc.subjectSea water intrusionen_HK
dc.subjectSewage outfallsen_HK
dc.subjectStormwater managementen_HK
dc.titleOn the head-discharge relation of a duckbill elastomer check valveen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0022-1686&volume=39&issue=6&spage=619&epage=627&date=2001&atitle=On+the+head-discharge+relation+of+a+duckbill+elastomer+check+valveen_HK
dc.identifier.emailLee, JHW: hreclhw@hku.hken_HK
dc.identifier.authorityLee, JHW=rp00061en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.scopuseid_2-s2.0-0035675365en_HK
dc.identifier.hkuros74139en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0035675365&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume39en_HK
dc.identifier.issue6en_HK
dc.identifier.spage619en_HK
dc.identifier.epage627en_HK
dc.publisher.placeSpainen_HK
dc.identifier.scopusauthoridLee, JHW=36078318900en_HK
dc.identifier.scopusauthoridWilkinson, DL=7401870147en_HK
dc.identifier.scopusauthoridWood, IR=7102583672en_HK

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