Accurate FIC-FEM formulation for the multidimensional steady-state advection–diffusion–absorption equation

In this paper we present an accurate stabilized FIC-FEM formulation for the multidimensional steady-state advection-diffusion-absorption equation.The stabilized formulation is based on the Galerkin FEM solution of the governing differential equations derived via the Finite Increment Calculus (FIC) m...

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Detalles Bibliográficos
Autores: Oñate Ibáñez de Navarra, Eugenio|||0000-0002-0804-7095, Nadukandi, Prashanth, Miquel Canet, Juan|||0000-0002-0526-4377
Tipo de recurso: artículo
Fecha de publicación:2017
País:España
Institución:Universitat Politècnica de Catalunya (UPC)
Repositorio:UPCommons. Portal del coneixement obert de la UPC
Idioma:inglés
OAI Identifier:oai:upcommons.upc.edu:2117/114549
Acceso en línea:https://hdl.handle.net/2117/114549
https://dx.doi.org/10.1016/j.cma.2017.08.012
Access Level:acceso abierto
Palabra clave:Fluid dynamics--Mathematical models
Advection-diffusion-absorption
Finite element method
Finite increment calculus
Dinàmica de fluids -- Models matemàtics
Àrees temàtiques de la UPC::Matemàtiques i estadística::Anàlisi numèrica::Mètodes en elements finits
Àrees temàtiques de la UPC::Física::Física de fluids
Descripción
Sumario:In this paper we present an accurate stabilized FIC-FEM formulation for the multidimensional steady-state advection-diffusion-absorption equation.The stabilized formulation is based on the Galerkin FEM solution of the governing differential equations derived via the Finite Increment Calculus (FIC) method using two stabilization parameters. The value of the two stabilization parameters ensuring an accurate nodal FEM solution using uniform meshes of linear elements is obtained from the optimal values for the 1D problem.The accuracy of the new FIC-FEM formulation is demonstrated in the solution of 2D steady-state advection-diffusion-absorption problems for a range of physical parameters and boundary conditions.