Abstract
The preconditioned TFQMR algorithm of the Krylov subspace method is implemented into SIMPLER as the inner-iteration method. In order to compare with Leonard and Drummond's results, QUICK and PWL schemes are applied respectively to solve the two-dimensional natural convection in a vertical tall cavity. From simulation results at very fine grids, it is found that although there are only minor difference in the Nusselt numbers, the numbers of secondary flows in that tall slot is not definite, being 11 or 12 depending on the computational conditions.
| Original language | English |
|---|---|
| Pages (from-to) | 283-291 |
| Number of pages | 9 |
| Journal | Progress in Computational Fluid Dynamics |
| Volume | 9 |
| Issue number | 3-5 |
| DOIs | |
| State | Published - 2009 |
Keywords
- Krylov subspace methods
- Leonard' s vertical slot
- Natural convection
- Preconditioning TFQMR method