Abstract
In this paper, according to basic fluid dynamics theory and interacting shear flows (ISF) theory, following conclusion can be proved. There exists the best computational mesh in simulation of free shear flows. The best mesh design are orthogonal grid which grid line are parallel to the direction of ISF viscous shear thin layer streamline, in addition, the grid must be refined in the thin layer along normal. As for no optimal mesh, it will be difficult to capture the physics viscous effect in ISF viscous thin shear layer as the result of much more refined grid and viscous effect will be numerical. The conclusion were validated by simulation of an uncompressible free shear layer laminar flow.
| Original language | English |
|---|---|
| Pages (from-to) | 885-889+895 |
| Journal | Beijing Ligong Daxue Xuebao/Transaction of Beijing Institute of Technology |
| Volume | 33 |
| Issue number | 9 |
| Publication status | Published - Sept 2013 |
Keywords
- Computational fluid dynamics
- Free shear layer flows
- Interacting shear flows theory
- Mesh design