Journal
JOURNAL OF COMPUTATIONAL PHYSICS
Volume 253, Issue -, Pages 405-417Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcp.2013.07.021
Keywords
Large-Eddy Simulation; Eddy-viscosity; High-order schemes; Symmetry-preserving discretization; Staggered grid; Unstructured grid
Funding
- Ministerio de Ciencia e Innovacion, Spain [ENE2010-17801]
- Juan de la Cierva postdoctoral [JCI-2009-04910]
Ask authors/readers for more resources
A simple approach to discretize the viscous dissipation term in the incompressible Navier-Stokes equations with spatially varying viscosity is presented. Unlike the case where the viscosity remains constant, its discretization may be quite cumbersome especially for high-order staggered formulations. To circumvent this problem, we propose an alternative form of the viscous term whose discretization is straightforward. Notice that this approach is also suitable for eddy-viscosity models for Large-Eddy Simulation. Moreover, since it is based on already available operators, it can be easily implemented on any structured or unstructured code. The (supra)convergence of the method is numerically shown on both a fourth-order Cartesian staggered and an unstructured collocated formulation. (C) 2013 Elsevier Inc. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available