Abstract
We propose a high order alternating direction implicit (ADI) solution method for solving unsteady convection-diffusion problems. The method is fourth order in space and second order in time. It permits multiple use of the one-dimensional tridiagonal algorithm with a considerable saving in computing time, and produces a very efficient solver. It is shown through a discrete Fourier analysis that the method is unconditionally stable for 2D problems. Numerical experiments are conducted to test its high accuracy and to compare it with the standard second-order Peaceman-Rachford ADI method and the spatial third-order compact scheme of Noye and Tan.
Original language | English |
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Pages (from-to) | 1-9 |
Number of pages | 9 |
Journal | Journal of Computational Physics |
Volume | 198 |
Issue number | 1 |
DOIs | |
Publication status | Published - Jul 20 2004 |
Keywords
- ADI method
- High order compact scheme
- Stability
- Unsteady convection-diffusion equation
ASJC Scopus subject areas
- Numerical Analysis
- Modelling and Simulation
- Physics and Astronomy (miscellaneous)
- Physics and Astronomy(all)
- Computer Science Applications
- Computational Mathematics
- Applied Mathematics