Research Article
Comparison of the Finite Volume and Lattice Boltzmann Methods for Solving Natural Convection Heat Transfer Problems inside Cavities and Enclosures
Table 5
Number of iterations and solving time for different discretization method.
| Type of method | Case number | Discretization method/pressure-velocity linking approach | Number of iterations | Solving time (s) |
| Finite volume method | 1 | 1st upwind/SIMPLE | 1571 | 482 | 2 | 1st upwind/SIMPLEC | 1572 | 486 | 3 | 2nd upwind/SIMPLE | 1597 | 502 | 4 | 2nd upwind/SIMPLEC | 1598 | 509 | 5 | Power law/SIMPLE | 1520 | 469 | 6 | Power law/SIMPLEC | 1521 | 474 | 7 | QUICK/SIMPLE | 1598 | 510 | 8 | QUICK/SIMPLEC | 1599 | 519 |
| Lattice Boltzmann method | 1 | Well-known finite difference method | 47507 | 3360 |
|
|