Boundary Layer Control Using Micro-Electromechanical Systems

Name: Boundary Layer Control Using Micro-Electromechanical Systems
Brand: Biblioscholar
SKU: 9781288327522
Price: 300.54 RON
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Autor: David M Borgeson

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This study investigated the use of MEMS devices to control the boundary layer separation from a circ...

Informații despre carte

Autor

David M Borgeson

Limbă

engleză

Legare

Carte - Carte broșată

Publicat

2012

Pagini

EAN

9781288327522

ISBN

9781288327522

Enbook ID

08243862

Editura

Biblioscholar

Greutate

186

Dimensiuni

189 x 246 x 5

Descriere completă

This study investigated the use of MEMS devices to control the boundary layer separation from a circular cylinder in cross flow. Measurements were accomplished in AFIT's low-speed, 12-inch cross section wind tunnel. Velocity curves integrated for the momentum thickness were the primary means of detecting changes in the flow field. MEMS placed spanwise across the length of the cylinder were actuated in a variety of operating frequencies and at a variety of angular positions relative to the incoming flow. It was the goal to determine which combination of angle and frequency would best serve the purpose of boundary layer control. An optimal angle of 69 degrees was discovered, and the optimal frequency equal to that of the shedding frequency provided the best solution. Of the tests conducted, these conditions allowed nearly a 25% reduction of momentum loss in the cylinder wake.

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Boundary Layer Control Using Micro-Electromechanical Systems

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