|
Título:
|
A fast and accurate method to solve the incompressible Navier-Stokes equations
|
|
Autor/a:
|
Idelsohn Barg, Sergio Rodolfo; Nigro, Norberto; Gimenez, Juan; Rossi, Riccardo; Martí, Julio Marcelo
|
|
Otros autores:
|
Universitat Politècnica de Catalunya. Departament d'Enginyeria Civil i Ambiental; Universitat Politècnica de Catalunya. (MC)2 - Grup de Mecànica Computacional en Medis Continus; Universitat Politècnica de Catalunya. RMEE - Grup de Resistència de Materials i Estructures en l'Enginyeria |
|
Abstract:
|
Purpose: The purpose of this paper is to highlight the possibilities of a novel Lagrangian formulation in dealing with the solution of the incompressible Navier-Stokes equations with very large time steps.
Design/methodology/approach: The design of the paper is based on introducing the origin of this novel numerical method, originally inspired on the Particle Finite Element Method (PFEM), summarizing the previously published theory in its moving mesh version. Afterwards its extension to fixed mesh version is introduced, showing some details about the implementation.
Findings: The authors have found that even though this method was originally designed to deal with heterogeneous or free-surface flows, it can be competitive with Eulerian alternatives, even in their range of optimal application in terms of accuracy, with an interesting robustness allowing to use large time steps in a stable way.
Originality/value: With this objective in mind, the authors have chosen a number of benchmark examples and have proved that the proposed algorithm provides results which compare favourably, both in terms of solution time and accuracy achieved, with alternative approaches, implemented in in-house and commercial codes. |
|
Abstract:
|
Peer Reviewed |
|
Materia(s):
|
-Àrees temàtiques de la UPC::Matemàtiques i estadística::Anàlisi numèrica
-Navier-Stokes equations--Numerical solutions
-Fluids
-Flow
-Fluid dynamics
-Navier-Stokes equations
-Particle methods
-Large time-steps
-Incompressible fluid flows
-Updated Lagrangian formulations
-Real time CFD
-Equacions de Navier-Stokes -- Mètodes numèrics |
|
Derechos:
|
|
|
Tipo de documento:
|
Artículo - Versión presentada
Artículo |
|
Compartir:
|
|
