A stable projection method for the incompressible Navier-Stokes equations on arbitrary geometries and adaptive Quad/Octrees

作者：Guittet Arthur^*; Theillard Maxime; Gibou Frederic

来源：Journal of Computational Physics, 2015, 292: 215-238.

DOI：10.1016/j.jcp.2015.03.024

• Navier-Stokes
• Incompressible
• Viscosity
• Level-set
• Irregular domains
• MAC grid
• Sharp
• Quad/Octrees
• Adaptive mesh refinement
• Stable projection method

We present a numerical method for solving the incompressible Navier-Stokes equations on non-graded quadtree and octree meshes and arbitrary geometries. The viscosity is treated implicitly through a finite volume approach based on Voronoi partitions, while the convective term is discretized with a semi-Lagrangian scheme, thus relaxing the restrictions on the time step. A novel stable implementation of the projection step is introduced, making use of the Marker And Cell layout for the data. The solver is validated numerically in two and three spatial dimensions.

• 出版日期2015-7-1