Scheda di dettaglio – i prodotti della ricerca
| Dato | Valore |
|---|---|
| Title | Relevance of solutions to the Navier-Stokes equations for explaining groundwater flow in fractured karst aquifers |
| Abstract | We examine the use of numeric flow solutions of the Navier-Stokes (N-S) equations to improve flow modeling in fractured karst aquifers. The N-S equations were discretized with both the meshed finite difference method (FDM) and the meshless smoothed particle hydrodynamics method. The results using the FDM model were successfully compared with those taken from the literature. The N-S equations were solved numerically for two practical problems in karst aquifers: (a) the horizontal displacement of the saltwater/ freshwater sharp interface in fissures due to groundwater overexploitation and (b) the pressure and velocity profiles in fissures in the vicinity of an injection well. In the first problem, the numeric N-S solution suggests an exponential time advancement of the freshwater/saltwater interface in fissures. In the second problem, the unsteady water velocity and pressure profiles were determined in fissures having variable apertures in the vicinity of an injection well. The N-S simulation results agreed well with the data collected during the test, thereby removing any uncertainty in the estimation of the aquifer transmissivity. |
| Source | Water resources research 49 (6), pp. 1–17 |
| Keywords | Acquiferi fessuratimoto non laminaremodelli matematici |
| Journal | Water resources research |
| Editor | American Geophysical Union., Washington [etc.], Stati Uniti d'America |
| Year | 2013 |
| Type | Articolo in rivista |
| DOI | 10.1002/wrcr.20279 |
| Authors | Masciopinto C., Palmiotta D. |
| Text | 263767 2013 10.1002/wrcr.20279 Acquiferi fessurati moto non laminare modelli matematici Relevance of solutions to the Navier Stokes equations for explaining groundwater flow in fractured karst aquifers Masciopinto C., Palmiotta D. CNR, Istituto di Ricerca Sulle Acque We examine the use of numeric flow solutions of the Navier Stokes N S equations to improve flow modeling in fractured karst aquifers. The N S equations were discretized with both the meshed finite difference method FDM and the meshless smoothed particle hydrodynamics method. The results using the FDM model were successfully compared with those taken from the literature. The N S equations were solved numerically for two practical problems in karst aquifers a the horizontal displacement of the saltwater/ freshwater sharp interface in fissures due to groundwater overexploitation and b the pressure and velocity profiles in fissures in the vicinity of an injection well. In the first problem, the numeric N S solution suggests an exponential time advancement of the freshwater/saltwater interface in fissures. In the second problem, the unsteady water velocity and pressure profiles were determined in fissures having variable apertures in the vicinity of an injection well. The N S simulation results agreed well with the data collected during the test, thereby removing any uncertainty in the estimation of the aquifer transmissivity. 49 Relevance of solutions to the Navier Stokes equations for explaining groundwater flow in fractured karst aquifers Equazioni di flusso piu complesse possono produrre notevoli miglioramenti nello studio dei flussi non laminari nelle fessure del sottosuolo, rispetto alle equazioni convenzionali Darcy WRR_2013_con_copertina.pdf Articolo in rivista American Geophysical Union. 0043 1397 Water resources research Water resources research Water resour. res. Water resources research. PALMIOTTA DOMENICO costantino.masciopinto MASCIOPINTO COSTANTINO TA.P04.005.010 Metodi, dispositivi di stima dei parametri idrogeologici e modelli matematici |