Numerical properties of a model problem for evaluation of natural tracer transport in groundwater

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F46747885%3A24220%2F16%3A00000886" target="_blank" >RIV/46747885:24220/16:00000886 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/46747885:24620/16:00000886

Výsledek na webu

<a href="http://www.iam.fmph.uniba.sk/amuc/ojs/index.php/algoritmy/article/view/418" target="_blank" >http://www.iam.fmph.uniba.sk/amuc/ojs/index.php/algoritmy/article/view/418</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Numerical properties of a model problem for evaluation of natural tracer transport in groundwater

Popis výsledku v původním jazyce

We solve a model problem of natural tracer transport in groundwater between the surface and the tunnel, based on field measured data. The problem with a simplified geometry represents the main features of flow inhomogeneity, namely the presence of fractures and matrix, and an influence of the stagnant zones on the tracer breakthrough. From the fictitious pulse tracer input, we calculate the mean residence time. The problem is solved by the mixed-hybrid finite element method for the flow equation and the discontinuous Galerkin method for the advection-diffusion transport, both implemented in Flow123d open-source software. We check a convergence by the time step refinement and find the limit of the mean residence time with rising time interval. The effect of dispersion parameters can explain some of the differences between results obtained by different numerical software in a separate study [5]. We also show how both the flow and the transport problem have a simple and efficient procedure to solve their inverse problems.

Název v anglickém jazyce

Numerical properties of a model problem for evaluation of natural tracer transport in groundwater

Popis výsledku anglicky

We solve a model problem of natural tracer transport in groundwater between the surface and the tunnel, based on field measured data. The problem with a simplified geometry represents the main features of flow inhomogeneity, namely the presence of fractures and matrix, and an influence of the stagnant zones on the tracer breakthrough. From the fictitious pulse tracer input, we calculate the mean residence time. The problem is solved by the mixed-hybrid finite element method for the flow equation and the discontinuous Galerkin method for the advection-diffusion transport, both implemented in Flow123d open-source software. We check a convergence by the time step refinement and find the limit of the mean residence time with rising time interval. The effect of dispersion parameters can explain some of the differences between results obtained by different numerical software in a separate study [5]. We also show how both the flow and the transport problem have a simple and efficient procedure to solve their inverse problems.

Druh

D - Stať ve sborníku

CEP obor

JD - Využití počítačů, robotika a její aplikace

OECD FORD obor

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Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2016

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

PROCEEDINGS OF THE CONFERENCE ALGORITMY 2016

ISBN

978-80-227-4544-4

ISSN

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e-ISSN

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Počet stran výsledku

10

Strana od-do

292-301

Název nakladatele

Publishing House of STU in Bratislava

Místo vydání

Bratislava

Místo konání akce

Podbanské

Datum konání akce

1. 1. 2016

Typ akce podle státní příslušnosti

EUR - Evropská akce

Kód UT WoS článku

000391175600030