Details
| Original language | English |
|---|---|
| Title of host publication | Models - Repositories of Knowledge |
| Pages | 95-99 |
| Number of pages | 5 |
| Publication status | Published - 2012 |
| Event | 8th International Conference on Calibration and Reliability in Groundwater Modeling - Repositories of Knowledge, ModelCARE 2011 - Leipzig, Germany Duration: 18 Sept 2011 → 22 Sept 2011 |
Publication series
| Name | IAHS-AISH Publication |
|---|---|
| Volume | 355 |
| 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.
Keywords
- Density, Fingering, Groundwater, Model, Monte Carlo, Random K field, Saturated
ASJC Scopus subject areas
- Earth and Planetary Sciences(all)
- General Earth and Planetary Sciences
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Models - Repositories of Knowledge. 2012. p. 95-99 (IAHS-AISH Publication; Vol. 355).
Research output: Chapter in book/report/conference proceeding › Conference contribution › Research › peer review
}
TY - GEN
T1 - On the use of random conductivity fields to promote unstable flow of dense plumes
AU - Cremer, Clemens
AU - Graf, Thomas
PY - 2012
Y1 - 2012
N2 - 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.
AB - 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.
KW - Density
KW - Fingering
KW - Groundwater
KW - Model
KW - Monte Carlo
KW - Random K field
KW - Saturated
UR - http://www.scopus.com/inward/record.url?scp=84877627781&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:84877627781
SN - 9781907161346
T3 - IAHS-AISH Publication
SP - 95
EP - 99
BT - Models - Repositories of Knowledge
T2 - 8th International Conference on Calibration and Reliability in Groundwater Modeling - Repositories of Knowledge, ModelCARE 2011
Y2 - 18 September 2011 through 22 September 2011
ER -