|
Title:
|
Finite element modeling of free surface flow in variable porosity media
|
|
Author:
|
Larese De Tetto, Antonia; Rossi, Riccardo; Oñate Ibáñez de Navarra, Eugenio
|
|
Other authors:
|
Universitat Politècnica de Catalunya. Departament de Resistència de Materials i Estructures a l'Enginyeria; Universitat Politècnica de Catalunya. (MC)2 - Grup de Mecànica Computacional en Medis Continus |
|
Abstract:
|
The aim of the present work is to present an overview of some numerical procedures for the simulation of free surface flows within a porous structure. A particular algorithm developed by the authors for solving this type of problems is presented. A modified form of the classical Navier–Stokes equations is proposed, with the principal aim of simulating in a unified way the seepage flow inside rockfill-like porous material and the free surface flow in the clear fluid region. The problem is solved using a semi-explicit stabilized fractional step algorithm where velocity is calculated using a 4th order Runge–Kutta scheme. The numerical formulation is developed in an Eulerian framework using a level set technique to track the evolution of the free surface. An edge-based data structure is employed to allow an easy OpenMP parallelization of the resulting finite element code. The numerical model is validated against laboratory experiments on small scale rockfill dams and is compared with other existing methods for solving similar problems. |
|
Abstract:
|
Peer Reviewed |
|
Subject(s):
|
-Àrees temàtiques de la UPC::Matemàtiques i estadística::Anàlisi numèrica::Mètodes en elements finits
-Àrees temàtiques de la UPC::Física::Física de fluids
-Finite element method--Mathematical models
-Porous materials--Fluid dynamics
-Seepage into porous media
Non linear resistance law
Seepage in rockfill
Semi-explicit fractional step
Non linear Darcy
Level set
Free surface fllows
-Materials porosos -- Dinàmica de fluids
-Elements finits, Mètode dels |
|
Rights:
|
|
|
Document type:
|
Article - Submitted version
Article |
|
Share:
|
|
