Abstract
A method for generating three-dimensional mixed-element-type unstructured grids and its application in simulating viscous flow by solving the Navier-Stokes equations are presented. Pirzadeh's advancing-layer method is modified to generate high-quality mixed prismatic/pyramid/ tetrahedral-element-type unstructured grids in the boundary-layer region, and the traditional advancing-front method is used to construct isotropic tetrahedral grids in the residual flow region. Based on the Spalart-Allmaras one equation turbulence model, three-dimensional Navier-Stokes equations are solved by using a cell-centered finite-volume method. Viscous flow problems around the ONERA M6 wing, a DLR-F4 wing-body configuration and a transport configuration are simulated to verify the correctness and practicability of the methods.
| Original language | English |
|---|---|
| Pages (from-to) | 385-390 |
| Number of pages | 6 |
| Journal | Hangkong Xuebao/Acta Aeronautica et Astronautica Sinica |
| Volume | 24 |
| Issue number | 5 |
| State | Published - Sep 2003 |
Keywords
- Finite-volume method
- Mixed element
- Navier-Stokes equations
- Unstructured meshes