1,720,996 research outputs found
Supplementary Material available online to "Radial gravity currents in vertically graded porous media: theory and experiments for Newtonian and power-law fluids", V. Di Federico, S. Longo, L. Chiapponi, R. Archetti, V. Ciriello, Advances in Water Resources, DOI: 10.1016/j.advwatres.2014.04.015
No full textSupplementary Material available online to "Radial gravity currents in vertically graded porous media: theory and experiments for Newtonian and power-law fluids", V. Di Federico, S. Longo, L. Chiapponi, R. Archetti, V. Ciriello, Advances in Water Resources, DOI: 10.1016/j.advwatres.2014.04.01
Video test 19 of the experiments reported in "Radial gravity currents in vertically graded porous media: theory and experiments for Newtonian and power-law fluids", DOI: 10.1016/j.advwatres.2014.04.015
No full textMovie of test No 19 of the list of experiments reported in "Radial gravity currents in vertically graded porous media: theory and experiments for Newtonian and power-law fluids", V. Di Federico, S. Longo, L. Chiapponi, R. Archetti, V. Ciriello, Advances in Water Resources, DOI: 10.1016/j.advwatres.2014.04.01
Video test 14 of the experiments reported in "Radial gravity currents in vertically graded porous media: theory and experiments for Newtonian and power-law fluids", DOI: 10.1016/j.advwatres.2014.04.015
No full textMovie of test No 14 of the list of experiments reported in "Radial gravity currents in vertically graded porous media: theory and experiments for Newtonian and power-law fluids", V. Di Federico, S. Longo, L. Chiapponi, R. Archetti, V. Ciriello, Advances in Water Resources, DOI: 10.1016/j.advwatres.2014.04.01
Dynamic Mode Decomposition accelerates uncertainty quantification via Polynomial Chaos Expansion
No full textCombining Polynomial Chaos Expansion and Dynamic Mode Decomposition for the reduction of models with time-variant response
No full text
On shear thinning fluid flow induced by continuous mass injection in porous media with variable conductivity
No full textA new formulation is proposed to examine the propagation of the pressure disturbance induced by the injection of a time-variable mass of a weakly compressible shear thinning fluid in a porous domain with generalized geometry (plane, radial, or spherical). Medium heterogeneity along the flow direction is conceptualized as a monotonic power-law permeability variation. The resulting nonlinear differential problem admits a similarity solution in dimensionless form which provides the velocity of the pressure front and describes the pressure field within the domain as a function of geometry, fluid flow behavior index, injection rate, and exponent of the permeability variation. The problem has a closed-form solution for an instantaneous injection, generalizing earlier results for constant permeability. A parameter-dependent upper bound to the permeability increase in the flow direction needs to be imposed for the expression of the front velocity to retain its physical meaning. An example application to the radial injection of a remediation agent in a subsurface environment demonstrates the impact of permeability spatial variations and of their interplay with uncertainties in flow behavior index on model predictions
- …
