Effect of a 3D surface indentation on boundary layer stability
Abstract eng: Effect of a three-dimensional (3D) surface indentation on boundary layer stability is studied in a high Reynolds number (Re) regime. Once the Tollmien-Schlichting (TS) wave undergoes a base flow (with/without a separation flow bubble) distorted by a 3D surface indentation, the growth rate of the TS wave can be changed downstream and some interesting properties from the 3D indentation distortion are observed. It is also found that under suitable indentation geometry parameters, it is observed that a global instability can be triggered, which has a strong impact on boundary layer transition. In this paper, these instabilities are investigated and effect of a 3D surface indentation is elucidated.
Publisher:
International Union of Theoretical and Applied Mechanics, 2016
Conference Title:
Conference Title:
24th International Congress of Theoretical and Applied Mechanics
Conference Venue:
Montreal (CA)
Conference Dates:
2016-08-21 / 2016-08-26
Rights:
Text je chráněný podle autorského zákona č. 121/2000 Sb.
Record appears in:
Record created 2016-11-15, last modified 2016-11-15
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