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Twofold Saddle-Point Formulation of Biot Poroelasticity with Stress-Dependent Diffusion
(2023)
We present a new stress/total-pressure formulation for poroelasticity that incorporates the coupling with steady nonlinear diffusion modified by stress. This nonlinear problem is written in mixed-primal form, which combines ...
Laboratorio de matemática: Fascículo #1
(Universidad de Costa Rica. Sede de Occidente, 1992, 1992)
Este fascículo consiste en una serie de guías para utilizar los modelos didácticos correspondientes a diversos conceptos matemáticos incluidos en los programas de los cursos de la enseñanza primaria y secundaria. Incluye ...
Incorporating variable viscosity in vorticity-based formulations for Brinkman equations
Intégration de la viscosité variable dans des formulations en tourbillon pour les équations de Brinkman
(2019-06)
In this brief note, we introduce a non-symmetric mixed finite element formulation for Brinkman equations written in terms of velocity, vorticity, and pressure with non-constant viscosity. The analysis is performed by the ...
Stability analysis for a new model of multi-species convection-diffusion-reaction in poroelastic tissue
(2020)
We perform the linear stability analysis of a new model for poromechanical processes with inertia (formulated in mixed form using the solid deformation, fluid pressure, and total pressure) interacting with diffusing and ...
Analysis and mixed-primal finite element discretisations for stress-assisted diffusion problems
(2018)
We analyse the solvability of a static coupled system of PDEs describing the diffusion of a solute into an elastic material, where the process is affected by the stresses exerted in the solid. The problem is formulated in ...
A mixed-primal finite element approximation of a sedimentation–consolidation system
(2016)
This paper is devoted to the mathematical and numerical analysis of a strongly cou- pled flow and transport system typically encountered in continuum-based models of sedimentation–consolidation processes. The model focuses ...
Afiche de estudio climatológico para la Estación Meteorológica de la Sede de Occidente
(2017-11)
En el marco de las Jornadas de Investigación del año 2017 se contó con la presentación del afiche de análisis de datos estadísticos para la Estación Meteorológica ubicada dentro del campus universitario de la Sede de ...
Validación de un método para cuantificación de acetaminofén en tabletas de 500 mg por espectrofotometría ultravioleta para la prueba de uniformidad de contenido
Validation of a method for quantification acetaminophen 500 mg tablets in ultraviolet spectrophotometry for testing of content uniformity
(2016-07-07)
El presente artículo contiene los detalles de la validación del método analítico para la cuantificación de acetaminofén, en este caso para aplicar a la prueba de uniformidad de contenido a tabletas de 500 mg, por la técnica ...
Velocity‑vorticity‑pressure formulation for the Oseen problem with variable viscosity
(2021)
We propose and analyse an augmented mixed finite element method for the Oseen equations written in terms of velocity, vorticity, and pressure with non-constant viscosity and homogeneous Dirichlet boundary condition for the ...
A posteriori error analysis of a fully-mixed formulation for the Brinkman–Darcy problem
(2017-09-05)
We develop the a posteriori error analysis for a mixed finite element method
applied to the coupling of Brinkman and Darcy equations in 3D, modelling the interaction of viscous and non-viscous flow effects across a given ...