Mixing of Multiple Buoyant Jets
Identifieur interne : 000962 ( PascalFrancis/Curation ); précédent : 000961; suivant : 000963Mixing of Multiple Buoyant Jets
Auteurs : Joseph H. W. Lee [Hong Kong]Source :
- Journal of hydraulic engineering : (New York, N.Y.) [ 0733-9429 ] ; 2012.
Descripteurs français
- Pascal (Inist)
English descriptors
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Abstract
Multiple buoyant jets are found in the natural and artificial environment: thermal discharges from fossil and nuclear-fueled electricity generation, domestic and industrial wastewater discharges, brine disposal from desalination plants, and various heat sources in the built environment. An overview of theoretical and experimental modeling of multiple buoyant jets over the past three decades is presented. Basic measurements of the structure of buoyant jet flows, integral jet modeling and three-dimensional numerical solutions of the Reynolds-averaged equations are reviewed. A semianalytical model is proposed to predict the dynamic interaction of multiple buoyant jets in stagnant fluid. The unknown jet trajectories are obtained from an iterative solution of an integral jet model and the irrotational external flow. Predictions are in good agreement with experiments of clustered jet groups, turbulent plume pairs, alternating diffusers, and rosette buoyant jet groups; the approach can also be extended to multiple jets in cross-flow. The mixing of a rosette buoyant jet group in a cross-flow is reviewed. The use of jet theory in solving two unconventional urban environment problems are highlighted: (1) the unraveling of the cause of the severe acute respiratory syndrome (SARS) outbreak in Hong Kong in 2003; and (2) design of a complex river junction for flood control under tight space constraints. It is suggested that experiments will remain a source of new theoretical ideas and the need for a civil engineer to solve complex problems with tractable models and analytical clarity will prevail.
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Lee</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Dept. of Civil and Environmental Engineering, Hong Kong Univ. of Science and Technology, Clear Water Bay</s1><s3>HKG</s3><sZ>1 aut.</sZ></inist:fA14><country>Hong Kong</country></affiliation><affiliation wicri:level="1"><inist:fA14 i1="02"><s1>The Univ. of Hong Kong</s1><s2>Pokfulam</s2><s3>HKG</s3><sZ>1 aut.</sZ></inist:fA14><country>Hong Kong</country></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">INIST</idno><idno type="inist">13-0103555</idno><date when="2012">2012</date><idno type="stanalyst">PASCAL 13-0103555 INIST</idno><idno type="RBID">Pascal:13-0103555</idno><idno type="wicri:Area/PascalFrancis/Corpus">000025</idno><idno type="wicri:Area/PascalFrancis/Curation">000962</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en" level="a">Mixing of Multiple Buoyant Jets</title><author><name sortKey="Lee, Joseph H W" sort="Lee, Joseph H W" uniqKey="Lee J" first="Joseph H. W." last="Lee">Joseph H. W. Lee</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Dept. of Civil and Environmental Engineering, Hong Kong Univ. of Science and Technology, Clear Water Bay</s1><s3>HKG</s3><sZ>1 aut.</sZ></inist:fA14><country>Hong Kong</country></affiliation><affiliation wicri:level="1"><inist:fA14 i1="02"><s1>The Univ. of Hong Kong</s1><s2>Pokfulam</s2><s3>HKG</s3><sZ>1 aut.</sZ></inist:fA14><country>Hong Kong</country></affiliation></author></analytic><series><title level="j" type="main">Journal of hydraulic engineering : (New York, N.Y.)</title><title level="j" type="abbreviated">J. hydraul. eng. : (New York, N.Y.)</title><idno type="ISSN">0733-9429</idno><imprint><date when="2012">2012</date></imprint></series></biblStruct></sourceDesc><seriesStmt><title level="j" type="main">Journal of hydraulic engineering : (New York, N.Y.)</title><title level="j" type="abbreviated">J. hydraul. eng. : (New York, N.Y.)</title><idno type="ISSN">0733-9429</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Crossflow</term><term>Diffusers</term><term>Flood discharge</term><term>Flow control</term><term>Hydrodynamic dispersion</term><term>Interactions</term><term>Mixing</term><term>Multiple jet</term><term>Plumes</term><term>Reviews</term><term>Severe acute respiratory syndrome virus</term><term>Turbulent flow</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>Jet multiple</term><term>Panache</term><term>Ecoulement turbulent</term><term>Ecoulement croisé</term><term>Mélangeage</term><term>Interaction</term><term>Diffuseur</term><term>Article synthèse</term><term>Commande écoulement</term><term>Evacuation crue</term><term>Dispersion hydrodynamique</term><term>Virus syndrome respiratoire aigu sévère</term><term>4727W</term><term>4727P</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Multiple buoyant jets are found in the natural and artificial environment: thermal discharges from fossil and nuclear-fueled electricity generation, domestic and industrial wastewater discharges, brine disposal from desalination plants, and various heat sources in the built environment. An overview of theoretical and experimental modeling of multiple buoyant jets over the past three decades is presented. Basic measurements of the structure of buoyant jet flows, integral jet modeling and three-dimensional numerical solutions of the Reynolds-averaged equations are reviewed. A semianalytical model is proposed to predict the dynamic interaction of multiple buoyant jets in stagnant fluid. The unknown jet trajectories are obtained from an iterative solution of an integral jet model and the irrotational external flow. Predictions are in good agreement with experiments of clustered jet groups, turbulent plume pairs, alternating diffusers, and rosette buoyant jet groups; the approach can also be extended to multiple jets in cross-flow. The mixing of a rosette buoyant jet group in a cross-flow is reviewed. The use of jet theory in solving two unconventional urban environment problems are highlighted: (1) the unraveling of the cause of the severe acute respiratory syndrome (SARS) outbreak in Hong Kong in 2003; and (2) design of a complex river junction for flood control under tight space constraints. It is suggested that experiments will remain a source of new theoretical ideas and the need for a civil engineer to solve complex problems with tractable models and analytical clarity will prevail.</div></front></TEI><inist><standard h6="B"><pA><fA01 i1="01" i2="1"><s0>0733-9429</s0></fA01><fA02 i1="01"><s0>JHEND8</s0></fA02><fA03 i2="1"><s0>J. hydraul. eng. : (New York, N.Y.)</s0></fA03><fA05><s2>138</s2></fA05><fA06><s2>12</s2></fA06><fA08 i1="01" i2="1" l="ENG"><s1>Mixing of Multiple Buoyant Jets</s1></fA08><fA11 i1="01" i2="1"><s1>LEE (Joseph H. 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The unknown jet trajectories are obtained from an iterative solution of an integral jet model and the irrotational external flow. Predictions are in good agreement with experiments of clustered jet groups, turbulent plume pairs, alternating diffusers, and rosette buoyant jet groups; the approach can also be extended to multiple jets in cross-flow. The mixing of a rosette buoyant jet group in a cross-flow is reviewed. The use of jet theory in solving two unconventional urban environment problems are highlighted: (1) the unraveling of the cause of the severe acute respiratory syndrome (SARS) outbreak in Hong Kong in 2003; and (2) design of a complex river junction for flood control under tight space constraints. 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