On the Convective and Absolute Nature of
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C. Cossu; T. Loiseleux
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Article
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1998
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Elsevier Science
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English
⚖ 255 KB
In numerical simulations of unstable flows the absolute or convective nature of the instability can be modified by numerical effects. We introduce a convective/absolute analysis of the dispersion relations associated with discretized operators. This analysis leads to conditions on the discretization