10 papers
A Nonhomogeneous Porous-Medium Equation for Field Scale CO Plume Spreading
Fernando Alonso-Marroquin, Christian Tantardini
We derive a nonlinear diffusion model for field scale CO plume spreading from a Global Buckley--Leverett component balance. The reduced variable is the vertically averaged…
A conservative finite-volume Buckley--Leverett solver with bounded-interval multiwavelet state analysis
Christian Tantardini
We develop a conservative finite-volume Buckley--Leverett solver equipped with a bounded-interval multiwavelet state-analysis layer. Because non-capillary Buckley--Leverett transpo…
Nonisothermal global-pressure exactness in fractured multiphase flow with aperture feedback
Christian Tantardini, Fernando Alonso-Marroquin
Global-pressure formulations recast multiphase Darcy flow in terms of a single pressure driving the total flux. Their exact equivalence to phase-pressure formulations holds only wh…
Global Buckley-Leverett theory for multicomponent flow in fractured media: Isothermal equation-of-state coupling and dynamic capillarity
Christian Tantardini, Fernando Alonso-Marroquin
We present an isothermal Global Buckley--Leverett framework for multicomponent, multiphase flow in porous and fractured media that retains the interpretability of classical Buckley…
Stationarity-constrained representative volume elements for image-based homogenization of granular microstructures
Fernando Alonso-Marroquin, Abdullah Alqubalee, Eduardo Garzanti +1
We present an image-based workflow for representative elementary volume (REV) sizing in chemically mapped granular microstructures, applied to Arabian dune-sand samples characteriz…
Quaternionic superconductivity links spinful pairing, topology, and charge- order
Christian Tantardini, Jacopo Masotti, Sabri F. Elatresh +1
We recast spinful superconductivity as a \textit{quaternion field theory}, where a quaternion is a four-component hypercomplex number with units $(\boldsymbol{e}_x,\boldsymbol{e}_y…