Effect on a laminar boundary layer of small-amplitude streamwise vorticity in the upstream flow (Q2706932)
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scientific article
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | Effect on a laminar boundary layer of small-amplitude streamwise vorticity in the upstream flow |
scientific article |
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Effect on a laminar boundary layer of small-amplitude streamwise vorticity in the upstream flow (English)
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2 July 2001
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small-amplitude streamwise vorticity
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flat-plate boundary layers
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perturbation
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instability
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Klebanoff-mode experiments
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The authors apply a predominantly numerical technique based on perturbation approach to study the effect of small free-stream disturbances on flat-plate boundary layers. Accurate numerical computations reveal that two regions of enhanced instability can emerge as the boundary-layer velocity profiles become sufficiently nonlinear. The first region appears relatively close to the wall, while the second lies in the outer domain of the boundary layer. A comparison with Klebanoff-mode experiments is given, and some of experimental observations are explained heuristically.
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