Scheda di dettaglio – i prodotti della ricerca
| Dato | Valore |
|---|---|
| Title | Hydrogeological Models of Water Flow and Pollutant Transport in Karstic and Fractured Reservoirs |
| Abstract | In a literature review of the recent advancements in mathematical hydrologic models applied in fractured karstic formations, we highlight the necessary improvements in the fluid dynamic equations that are commonly applied to the flow in a discrete fracture network (DFN) via channel network models. Fluid flow and pollutant transport modeling in karst aquifers should consider the simultaneous occurrence of laminar, nonlaminar, and turbulent fluxes in the fractures rather than the laminar flow by the cubic law that has been widely applied in the scientific literature. Some simulations show overestimations up to 75% of the groundwater velocity when non-laminar flows are neglected. Moreover, further model development is needed to address the issues of tortuosity of preferential saturated fluid flow in fractures suggesting adjustments of the size of the mean aperture in DFN models. During the past decade, DFN mathematical models have been significantly developed aimed at relating the three-dimensional structure of interconnected fractures within rocky systems to the specific fracture properties measurable on the rock outcrops with the use of reliefs, tracer/pumping tests, and geotechnical field surveys. The capabilities and limitations of previous reported hydrological models together with specific research advancements and findings in modeling equations are described herein. New software is needed for creating three-dimensional contour maps in fractured aquifers corresponding to the outputs of particle tracking simulations. Existing software based on the equivalent continuum or multiple-interacting continua cannot delineate the spread of pollutant migrations affected by the tortuous preferential flow pathways that occur in DFNs. |
| Source | Water resources research 57 |
| Keywords | Acque sotterraneeModelli matematiciaquiferi carsicirocce fratturate |
| Journal | Water resources research |
| Editor | American Geophysical Union., Washington [etc.], Stati Uniti d'America |
| Year | 2021 |
| Type | Articolo in rivista |
| DOI | 10.1029/2021WR029969 |
| Authors | Masciopinto C.; Passarella G.; Caputo M.C.; Masciale R.; De Carlo L. |
| Text | 456528 2021 10.1029/2021WR029969 Scopus 2 s2.0 85113351158 Acque sotterranee Modelli matematici aquiferi carsici rocce fratturate Hydrogeological Models of Water Flow and Pollutant Transport in Karstic and Fractured Reservoirs Masciopinto C.; Passarella G.; Caputo M.C.; Masciale R.; De Carlo L. Consiglio Nazionale delle Ricerche, Istituto di Ricerca Sulle Acque, Bari, Consiglio Nazionale delle Ricerche, Istituto di Ricerca Sulle Acque, Bari, Italy, , , Italy; Consiglio Nazionale delle Ricerche, Istituto di Ricerca Sulle Acque, Bari, Consiglio Nazionale delle Ricerche, Istituto di Ricerca Sulle Acque, Bari, Italy, , , Italy In a literature review of the recent advancements in mathematical hydrologic models applied in fractured karstic formations, we highlight the necessary improvements in the fluid dynamic equations that are commonly applied to the flow in a discrete fracture network DFN via channel network models. Fluid flow and pollutant transport modeling in karst aquifers should consider the simultaneous occurrence of laminar, nonlaminar, and turbulent fluxes in the fractures rather than the laminar flow by the cubic law that has been widely applied in the scientific literature. Some simulations show overestimations up to 75% of the groundwater velocity when non laminar flows are neglected. Moreover, further model development is needed to address the issues of tortuosity of preferential saturated fluid flow in fractures suggesting adjustments of the size of the mean aperture in DFN models. During the past decade, DFN mathematical models have been significantly developed aimed at relating the three dimensional structure of interconnected fractures within rocky systems to the specific fracture properties measurable on the rock outcrops with the use of reliefs, tracer/pumping tests, and geotechnical field surveys. The capabilities and limitations of previous reported hydrological models together with specific research advancements and findings in modeling equations are described herein. New software is needed for creating three dimensional contour maps in fractured aquifers corresponding to the outputs of particle tracking simulations. Existing software based on the equivalent continuum or multiple interacting continua cannot delineate the spread of pollutant migrations affected by the tortuous preferential flow pathways that occur in DFNs. 57 Published version http //www.scopus.com/record/display.url eid=2 s2.0 85113351158 origin=inward Articolo in rivista American Geophysical Union. 0043 1397 Water resources research Water resources research Water resour. res. Water resources research. rita.masciale MASCIALE RITA giuseppe.passarella PASSARELLA GIUSEPPE mariaclementina.caputo CAPUTO MARIA CLEMENTINA lorenzo.decarlo DE CARLO LORENZO costantino.masciopinto MASCIOPINTO COSTANTINO |