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2019-07-22Zeitschriftenartikel DOI: 10.3390/w11071517
Integral Flow Modelling Approach for Surface Water-Groundwater Interactions along a Rippled Streambed
dc.contributor.authorBroecker, Tabea
dc.contributor.authorTeuber, Katharina
dc.contributor.authorSobhi Gollo, Vahid
dc.contributor.authorNützmann, Gunnar
dc.contributor.authorLewandowski, Jörg
dc.contributor.authorHinkelmann, Reinhard
dc.date.accessioned2019-09-11T10:39:06Z
dc.date.available2019-09-11T10:39:06Z
dc.date.issued2019-07-22none
dc.date.updated2019-08-24T05:05:32Z
dc.identifier.urihttp://edoc.hu-berlin.de/18452/21267
dc.description.abstractExchange processes of surface and groundwater are important for the management of water quantity and quality as well as for the ecological functioning. In contrast to most numerical simulations using coupled models to investigate these processes, we present a novel integral formulation for the sediment-water-interface. The computational fluid dynamics (CFD) model OpenFOAM was used to solve an extended version of the three-dimensional Navier–Stokes equations which is also applicable in non-Darcy-flow layers. Simulations were conducted to determine the influence of ripple morphologies and surface hydraulics on the flow processes within the hyporheic zone for a sandy and for a gravel sediment. In- and outflowing exchange fluxes along a ripple were determined for each case. The results indicate that larger grain size diameters, as well as ripple distances, increased hyporheic exchange fluxes significantly. For higher ripple dimensions, no clear relationship to hyporheic exchange was found. Larger ripple lengths decreased the hyporheic exchange fluxes due to less turbulence between the ripples. For all cases with sand, non-Darcy-flow was observed at an upper layer of the ripple, whereas for gravel non-Darcy-flow was recognized nearly down to the bottom boundary. Moreover, the sediment grain sizes influenced also the surface water flow significantly.eng
dc.description.sponsorshipDeutsche Forschungsgemeinschaft
dc.language.isoengnone
dc.publisherHumboldt-Universität zu Berlin
dc.rights(CC BY 4.0) Attribution 4.0 Internationalger
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.subjectgroundwater-surface water interactionseng
dc.subjectintegral modeleng
dc.subjectcomputational fluid dynamicseng
dc.subjecthyporheic zoneeng
dc.subjectOpenFOAMeng
dc.subjectrippleseng
dc.subject.ddc690 Hausbau, Bauhandwerknone
dc.titleIntegral Flow Modelling Approach for Surface Water-Groundwater Interactions along a Rippled Streambednone
dc.typearticle
dc.identifier.urnurn:nbn:de:kobv:11-110-18452/21267-2
dc.identifier.doi10.3390/w11071517none
dc.identifier.doihttp://dx.doi.org/10.18452/20516
dc.type.versionpublishedVersionnone
local.edoc.container-titleWaternone
local.edoc.pages17none
local.edoc.type-nameZeitschriftenartikel
local.edoc.institutionMathematisch-Naturwissenschaftliche Fakultätnone
local.edoc.container-typeperiodical
local.edoc.container-type-nameZeitschrift
local.edoc.container-publisher-nameMDPInone
local.edoc.container-publisher-placeBaselnone
local.edoc.container-volume11none
local.edoc.container-issue7none
dc.description.versionPeer Reviewednone
local.edoc.container-articlenumber1517none
dc.identifier.eissn2073-4441
local.edoc.affiliationBroecker, Tabea; Chair of Water Resources Management and Modeling of Hydrosystems, Technische Universität Berlin, 13355 Berlin, Germany,none
local.edoc.affiliationTeuber, Katharina; Chair of Water Resources Management and Modeling of Hydrosystems, Technische Universität Berlin, 13355 Berlin, Germany,none
local.edoc.affiliationSobhi Gollo, Vahid; Chair of Water Resources Management and Modeling of Hydrosystems, Technische Universität Berlin, 13355 Berlin, Germany,none
local.edoc.affiliationNützmann, Gunnar; Ecohydrology Department, Leibniz-Institute of Freshwater Ecology and Inland Fisheries, 12587 Berlin, Germany, Geography Department, Humboldt-University Berlin, 10099 Berlin, Germany,none
local.edoc.affiliationLewandowski, Jörg; Ecohydrology Department, Leibniz-Institute of Freshwater Ecology and Inland Fisheries, 12587 Berlin, Germany, Geography Department, Humboldt-University Berlin, 10099 Berlin, Germany,none
local.edoc.affiliationHinkelmann, Reinhard; Chair of Water Resources Management and Modeling of Hydrosystems, Technische Universität Berlin, 13355 Berlin, Germany,none

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