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Viac informácií o knihe Global Instabilities of Incompressible Plane-Channel Flows

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Anotácia knihy

The three-dimensional linear stability of the two-dimensional, incompressible flow is studied numerically in plane channels, exhibiting sudden expansions/constrictions in the form of steps. The corner singularities of the geometries lead to steep gradients in the flow quantities in the vicinity of the steps, where the flow separates immediately, even at low Reynolds numbers. The geometries of the systems considered, i.e. the backward-facing-step, forward-facing-step and plane sudden-expansion problems, are varied in a systematic way such that a wide range of the parameter space is covered. A global, temporal linear stability analysis shows that the resulting stability boundaries are continuous functions of the geometry parameters. If the critical Reynolds and wave numbers are scaled appropriately, they approach a linear asymptotic behaviour in the limit of very large as well as small step heights. An energy-transfer analysis is used to understand the physical nature of the instabilities. This analysis reveals that the basic flow becomes unstable due to different instability mechanisms, which are studied in detail for representative geometries.

Parametre knihy

Zaradenie knihy Knihy po anglicky Mathematics & science Mathematics

• Celý názov: Global Instabilities of Incompressible Plane-Channel Flows
• Podnázov: The Backward-Facing-Step, Forward-Facing-Step and Sudden-Expansion Problems
• Autor: Daniel Lanzerstorfer
• Jazyk: Angličtina
• Väzba: Brožovaná
• Počet strán: 124
• EAN: 9783838133706
• ISBN: 3838133706
• ID: 06993808
• Nakladateľ: Sudwestdeutscher Verlag Fur Hochschulschriften AG
• Hmotnosť: 191 g
• Rozmery: 229 × 152 × 7 mm
• Dátum vydania: 08. June 2012

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