Abstract
Asymptotic stability of high-order finite-difference schemes for linear hyperbolic systems is investigated using the Nyquist criterion of linear-system theory. This criterion leads to a sufficient stability condition which is evaluated numerically. A fifth-order compact upwind-biased finite-difference scheme is developed which is asymptotically stable, according to the Nyquist criterion, for linear 2 × 2 systems. Moreover, this scheme is optimised with respect to its dispersion properties. The suitability of the scheme for discretisation of the compressible Navier-Stokes equations is demonstrated by computing inviscid and viscous eigensolutions of compressible Couette flow.
Original language | English |
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Pages (from-to) | 435-454 |
Number of pages | 20 |
Journal | Journal of Computational Physics |
Volume | 208 |
Issue number | 2 |
DOIs | |
State | Published - 20 Sep 2005 |
Keywords
- Compact finite-difference schemes
- Stability