English   español  
Por favor, use este identificador para citar o enlazar a este item: http://hdl.handle.net/10261/140770
Título

Anomalous transport on regular fracture networks: Impact of conductivity heterogeneity and mixing at fracture intersections

AutorKang, Peter K.; Dentz, Marco; Le Borgne, Tanguy; Juanes, Rubén
Palabras claveLagrange multipliers
Fracture network
Lagrangian velocity
Non-fickian transports
Fecha de publicación28-ago-2015
EditorAmerican Physical Society
CitaciónPhysical Review - Section E - Statistical Nonlinear and Soft Matter Physics 92(2): Article number 022148 (2015)
ResumenWe investigate transport on regular fracture networks that are characterized by heterogeneity in hydraulic conductivity. We discuss the impact of conductivity heterogeneity and mixing within fracture intersections on particle spreading. We show the emergence of non-Fickian transport due to the interplay between the network conductivity heterogeneity and the degree of mixing at nodes. Specifically, lack of mixing at fracture intersections leads to subdiffusive scaling of transverse spreading but has negligible impact on longitudinal spreading. An increase in network conductivity heterogeneity enhances both longitudinal and transverse spreading and leads to non-Fickian transport in longitudinal direction. Based on the observed Lagrangian velocity statistics, we develop an effective stochastic model that incorporates the interplay between Lagrangian velocity correlation and velocity distribution. The model is parameterized with a few physical parameters and is able to capture the full particle transition dynamics. © 2015 American Physical Society.
Versión del editor10.1103/PhysRevE.92.022148
URIhttp://hdl.handle.net/10261/140770
DOI10.1103/PhysRevE.92.022148
Aparece en las colecciones: (IDAEA) Artículos
Ficheros en este ítem:
Fichero Descripción Tamaño Formato  
ctrwmixnodes_postprint.pdf6,09 MBAdobe PDFVista previa
Visualizar/Abrir
Mostrar el registro completo
 

Artículos relacionados:


NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.