Pregled bibliografske jedinice broj: 790033
Advective transport in heterogeneous aquifers: Are proxy models predictive?
Advective transport in heterogeneous aquifers: Are proxy models predictive? // Water resources research, 51 (2015), 12; 9577-9594 doi:10.1002/2015WR017118 (međunarodna recenzija, članak, znanstveni)
CROSBI ID: 790033 Za ispravke kontaktirajte CROSBI podršku putem web obrasca
Naslov
Advective transport in heterogeneous aquifers: Are proxy models predictive?
Autori
Fiori, Aldo ; Zarlenga, Alberto ; Gotovac, Hrvoje ; Janković, Igor ; Volpi, Elena ; Cvetković, Vladimir ; Dagan, Gedeon
Izvornik
Water resources research (0043-1397) 51
(2015), 12;
9577-9594
Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni
Ključne riječi
advective transport; proxi models; MRMT; CWRT
Sažetak
We examine the prediction capability of two approximate models (Multi-Rate Mass Transfer (MRMT) and Continuous Time Random Walk (CTRW)) of non-Fickian transport, by comparison with accurate 2-D and 3-D numerical simulations. Both nonlocal in time approaches circumvent the need to solve the flow and transport equations by using proxy models to advection, providing the breakthrough curves (BTC) at control planes at any x, depending on a vector of five unknown parameters. Although underlain by different mechanisms, the two models have an identical structure in the Laplace Transform domain and have the Markovian property of independent transitions. We show that also the numerical BTCs enjoy the Markovian property. Following the procedure recommended in the literature, along a practitioner perspective, we first calibrate the parameters values by a best fit with the numerical BTC at a control plane at x1, close to the injection plane, and subsequently use it for prediction at further control planes for a few values of inline image. Due to a similar structure and Markovian property, the two methods perform equally well in matching the numerical BTC. The identified parameters are generally not unique, making their identification somewhat arbitrary. The inverse Gaussian model and the recently developed Multi-Indicator Model (MIM), which does not require any fitting as it relates the BTC to the permeability structure, are also discussed. The application of the proxy models for prediction requires carrying out transport field tests of large plumes for a long duration.
Izvorni jezik
Engleski
Znanstvena područja
Geologija, Građevinarstvo, Temeljne tehničke znanosti
POVEZANOST RADA
Ustanove:
Fakultet građevinarstva, arhitekture i geodezije, Split
Profili:
Hrvoje Gotovac
(autor)
Citiraj ovu publikaciju:
Časopis indeksira:
- Current Contents Connect (CCC)
- Web of Science Core Collection (WoSCC)
- Science Citation Index Expanded (SCI-EXP)
- SCI-EXP, SSCI i/ili A&HCI
- Scopus