On the use of random conductivity fields to promote unstable flow of dense plumes

Publikation: Beitrag in Buch/Bericht/Sammelwerk/Konferenzband › Aufsatz in Konferenzband › Forschung › Peer-Review

Autoren

  • Clemens Cremer
  • Thomas Graf

Organisationseinheiten

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Details

OriginalspracheEnglisch
Titel des SammelwerksModels - Repositories of Knowledge
Seiten95-99
Seitenumfang5
PublikationsstatusVeröffentlicht - 2012
Veranstaltung8th International Conference on Calibration and Reliability in Groundwater Modeling - Repositories of Knowledge, ModelCARE 2011 - Leipzig, Deutschland
Dauer: 18 Sept. 2011 → 22 Sept. 2011

Publikationsreihe

NameIAHS-AISH Publication
Band355
ISSN (Print)0144-7815

Abstract

Flow under variable-density conditions is widespread, occurring in geothermal reservoirs, at waste disposal sites or due to saltwater intrusions. In nature, the migration of dense plumes typically results in the formation of vertical plume fingers which are known to be triggered by material heterogeneity. Random hydraulic conductivity (K) fields are introduced into numerical simulations to incorporate pore-scale heterogeneity into homogenous media and to generate fingers realistically. That method is evaluated using a previously-conducted laboratory-scale sand tank experiment, which is numerically re-simulated here. Results indicate that the variance of In(K) of 10 -3 (K in m s-1) realistically reproduces the number of plume fingers observed in the sand tank experiment. Introducing random K. fields is therefore useful to accurately simulate dense plume fingering in saturated homogeneous porous media. A Monte Carlo approach showed that the simulation of dense plume fingers is realisation-independent.

ASJC Scopus Sachgebiete

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On the use of random conductivity fields to promote unstable flow of dense plumes. / Cremer, Clemens; Graf, Thomas.
Models - Repositories of Knowledge. 2012. S. 95-99 (IAHS-AISH Publication; Band 355).

Publikation: Beitrag in Buch/Bericht/Sammelwerk/Konferenzband › Aufsatz in Konferenzband › Forschung › Peer-Review

Cremer, C & Graf, T 2012, On the use of random conductivity fields to promote unstable flow of dense plumes. in Models - Repositories of Knowledge. IAHS-AISH Publication, Bd. 355, S. 95-99, 8th International Conference on Calibration and Reliability in Groundwater Modeling - Repositories of Knowledge, ModelCARE 2011, Leipzig, Deutschland, 18 Sept. 2011.
Cremer, C., & Graf, T. (2012). On the use of random conductivity fields to promote unstable flow of dense plumes. In Models - Repositories of Knowledge (S. 95-99). (IAHS-AISH Publication; Band 355).
Cremer C, Graf T. On the use of random conductivity fields to promote unstable flow of dense plumes. in Models - Repositories of Knowledge. 2012. S. 95-99. (IAHS-AISH Publication).
Cremer, Clemens ; Graf, Thomas. / On the use of random conductivity fields to promote unstable flow of dense plumes. Models - Repositories of Knowledge. 2012. S. 95-99 (IAHS-AISH Publication).
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