Real-case benchmark for flow and tracer transport in the fractured rock

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F46747885%3A24220%2F16%3A00000745" target="_blank" >RIV/46747885:24220/16:00000745 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/46747885:24620/16:00000745

Výsledek na webu

<a href="http://link.springer.com/article/10.1007/s12665-016-6061-z" target="_blank" >http://link.springer.com/article/10.1007/s12665-016-6061-z</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s12665-016-6061-z" target="_blank" >10.1007/s12665-016-6061-z</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Real-case benchmark for flow and tracer transport in the fractured rock

Popis výsledku v původním jazyce

The paper is intended to define a benchmarkproblem related to groundwater flow and natural tracer transport using observations of discharge and isotopic tracers in fractured, crystalline rock. Three numerical simulators: Flow123d, OpenGeoSys, and PFLOTRAN arecompared. The data utilized in the project were collected ina water-supply tunnel in granite of the Jizera Mountains, Bedřichov, Czech Republic. The problem configuration combines subdomains of different dimensions, 3D continuumfor hard-rock blocks or matrix and 2D features forfractures or fault zones, together with realistic boundary conditions for tunnel-controlled drainage. Steady-state andtransient flow and a pulse injection tracer transport problemare solved. The results confirm mostly consistent behavior of the codes. Both the codes Flow123d and OpenGeoSys with 3D–2D coupling implemented differ by several percent in most cases, which is appropriate to, e.g., effects ofdiscrete unknown placing in the mesh. Some of the PFLOTRAN results differ more, which can be explained by effects of the dispersion tensor evaluation scheme andof the numerical diffusion. The phenomenon can get stronger with fracture/matrix coupling and with parameter magnitude contrasts. Although the study was not aimed on inverse solution, the models were fit to the measured data approximately, demonstrating the intended real-case relevance of the benchmark.

Název v anglickém jazyce

Real-case benchmark for flow and tracer transport in the fractured rock

Popis výsledku anglicky

The paper is intended to define a benchmarkproblem related to groundwater flow and natural tracer transport using observations of discharge and isotopic tracers in fractured, crystalline rock. Three numerical simulators: Flow123d, OpenGeoSys, and PFLOTRAN arecompared. The data utilized in the project were collected ina water-supply tunnel in granite of the Jizera Mountains, Bedřichov, Czech Republic. The problem configuration combines subdomains of different dimensions, 3D continuumfor hard-rock blocks or matrix and 2D features forfractures or fault zones, together with realistic boundary conditions for tunnel-controlled drainage. Steady-state andtransient flow and a pulse injection tracer transport problemare solved. The results confirm mostly consistent behavior of the codes. Both the codes Flow123d and OpenGeoSys with 3D–2D coupling implemented differ by several percent in most cases, which is appropriate to, e.g., effects ofdiscrete unknown placing in the mesh. Some of the PFLOTRAN results differ more, which can be explained by effects of the dispersion tensor evaluation scheme andof the numerical diffusion. The phenomenon can get stronger with fracture/matrix coupling and with parameter magnitude contrasts. Although the study was not aimed on inverse solution, the models were fit to the measured data approximately, demonstrating the intended real-case relevance of the benchmark.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

DJ - Znečištění a kontrola vody

OECD FORD obor

—

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 periodika

Environmental Earth Sciences

ISSN

1866-6299

e-ISSN

—

Svazek periodika

75

Číslo periodika v rámci svazku

18

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

17

Strana od-do

""

Kód UT WoS článku

000384333000040

EID výsledku v databázi Scopus

2-s2.0-84988336291