Abstract
Periodically fully developed convective heat transfer characteristics in a two-dimensional wavy channel are investigated numerically with a constant wall temperature. The calculations are performed with Pr=0.7, Re=20-500 on non-orthogonal non-staggered grids generated by an elliptic equation system. A semi-implicit method for pressure linked equations revised (SIMPLER) algorithm in curvilinear body-fitted coordinates is employed. Effects of Reynolds number and geometric parameters, such as aspect ratio φ and shape ratio γ, on heat transfer and friction factor are studied. It shows that no recirculation region occurs through the whole channel at low Reynolds numbers, small aspect ratio or small shape ratio. With the increase of Reynolds number, aspect ratio or shape ratio, heat transfer is enhanced due to flow recirculation. Corresponding friction factor increases simultaneously.
| Original language | English |
|---|---|
| Pages (from-to) | 192-196 |
| Number of pages | 5 |
| Journal | Jisuan Wuli/Chinese Journal of Computational Physics |
| Volume | 24 |
| Issue number | 2 |
| State | Published - Mar 2007 |
| Externally published | Yes |
Keywords
- Convective heat transfer
- Geometric parameters
- SIMPLER algorithm
- Wavy channel