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portada Boundary Layer Flow Control by an Array of Ramp-Shaped Vortex Generators
Type
Physical Book
Author
Publisher
Language
English
Pages
36
Format
Paperback
Dimensions
24.6x18.9x0.2 cm
Weight
0.08 kg.
ISBN13
9781289168520
Categories

Boundary Layer Flow Control by an Array of Ramp-Shaped Vortex Generators

Nasa Technical Reports Server (Ntrs) (Author) · Bibliogov · Paperback

Boundary Layer Flow Control by an Array of Ramp-Shaped Vortex Generators - Nasa Technical Reports Server (Ntrs)

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Delivery: 19 Oct - 30 Oct Shipping: 16 to 20 business days.
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NT$ 936

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Synopsis "Boundary Layer Flow Control by an Array of Ramp-Shaped Vortex Generators"

Flow field survey results for the effect of ramp-shaped vortex generators (VG) on a turbulent boundary layer are presented. The experiments are carried out in a low-speed wind tunnel and the data are acquired primarily by hot-wire anemometry. Distributions of mean velocity and turbulent stresses as well as streamwise vorticity, on cross-sectional planes at various downstream locations, are obtained. These detailed flow field properties, including the boundary layer characteristics, are documented with the primary objective of aiding possible computational investigations. The results show that VG orientation with apex upstream, that produces a downwash directly behind it, yields a stronger pair of streamwise vortices. This is in contrast to the case with apex downstream that produces a pair of vortices of opposite sense. Thus, an array of VG s with the former orientation, usually considered for film-cooling application, may also be superior for mixing enhancement and boundary layer separation control.

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