Abstract
We present a mimetic discretization of the incompressible Navier-Stokes equations for general polygonal meshes. The discretization employs staggered velocity variables and results in discrete equations that exactly conserve mass, momentum and kinetic energy (in the inviscid limit) up to and including the boundaries where Dirichlet conditions apply. Moreover, the discrete equations give rise to a discrete global vorticity that is consistent with the Dirichlet boundary conditions. As the method retains all its favorable properties on general meshes, it can be perfectly applied as a locally refined Cartesian mesh cut-cell method. We numerically verify the conservation properties for the lid-driven cavity flow and demonstrate the method for the unsteady flow around a circular cylinder.
Original language | English |
---|---|
Title of host publication | Proceedings of the 6th European Conference on Computational Mechanics |
Subtitle of host publication | Solids, Structures and Coupled Problems, ECCM 2018 and 7th European Conference on Computational Fluid Dynamics, ECFD 2018 |
Editors | Roger Owen, Rene de Borst, Jason Reese, Chris Pearce |
Publisher | International Center for Numerical Methods in Engineering (CIMNE) |
Pages | 4087-4098 |
Number of pages | 12 |
ISBN (Electronic) | 9788494731167 |
Publication status | Published - 2020 |
Event | 6th ECCOMAS European Conference on Computational Mechanics: Solids, Structures and Coupled Problems, ECCM 2018 and 7th ECCOMAS European Conference on Computational Fluid Dynamics, ECFD 2018 - Glasgow, United Kingdom Duration: 11 Jun 2018 → 15 Jun 2018 |
Conference
Conference | 6th ECCOMAS European Conference on Computational Mechanics: Solids, Structures and Coupled Problems, ECCM 2018 and 7th ECCOMAS European Conference on Computational Fluid Dynamics, ECFD 2018 |
---|---|
Country/Territory | United Kingdom |
City | Glasgow |
Period | 11/06/18 → 15/06/18 |
Keywords
- Cartesian mesh
- Conservative
- Cut-cell method
- Mimetic
- Navier-Stokes