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Numerical simulations of the aerodyn...

Liu, Yi.

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Numerical simulations of the aerodynamic characteristics of circulation control wing sections.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Numerical simulations of the aerodynamic characteristics of circulation control wing sections./
Author:	Liu, Yi.
Description:	159 p.
Notes:	Source: Dissertation Abstracts International, Volume: 64-03, Section: B, page: 1349.
Contained By:	Dissertation Abstracts International64-03B.
Subject:	Engineering, Aerospace. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3084981

Numerical simulations of the aerodynamic characteristics of circulation control wing sections.
Liu, Yi.

Numerical simulations of the aerodynamic characteristics of circulation control wing sections. - 159 p.

Source: Dissertation Abstracts International, Volume: 64-03, Section: B, page: 1349.

Thesis (Ph.D.)--Georgia Institute of Technology, 2003.

Circulation Control technology is a very effective way of achieving very high lift coefficients needed by aircraft during take-off and landing. Compared to a conventional high-lift system, a Circulation Control Wing can generate the same high lift during take-off/landing with fewer or no moving parts and much less complexity.Subjects--Topical Terms:

1018395
Engineering, Aerospace.

Numerical simulations of the aerodynamic characteristics of circulation control wing sections.
LDR:02712nmm 2200289 4500 001 1810269
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008 130610s2003 eng d
035 $a (UnM)AAI3084981
035 $a AAI3084981
040 $a UnM $c UnM
100 1 $a Liu, Yi. $3 1259419
245 1 0 $a Numerical simulations of the aerodynamic characteristics of circulation control wing sections.
300 $a 159 p.
500 $a Source: Dissertation Abstracts International, Volume: 64-03, Section: B, page: 1349.
500 $a Director: Lakshmi N. Sankar.
502 $a Thesis (Ph.D.)--Georgia Institute of Technology, 2003.
520 $a Circulation Control technology is a very effective way of achieving very high lift coefficients needed by aircraft during take-off and landing. Compared to a conventional high-lift system, a Circulation Control Wing can generate the same high lift during take-off/landing with fewer or no moving parts and much less complexity.
520 $a In this work, an unsteady three-dimensional Navier-Stokes analysis procedure has been developed and applied to CCW configurations. Steady jets, pulsed jets, the leading edge and trailing edge blowing can all be studied with this solver.
520 $a The effects of 2-D steady jets and 2-D pulsed jets on the aerodynamic performance of CCW airfoils have been investigated. It is found that a steady jet can generate very high lift at zero angle of attack without stall, and that a small amount of blowing can eliminate the vortex shedding, a potential noise source. It is also found that the pulsed jet can achieve the same high lift as the steady jet but at less mass flow rates, especially at a high frequency, and that the Strouhal number has a more dominant effect on the pulsed jet performance than just the frequency.
520 $a Three-dimensional simulations have also been done for two cases. The first is a streamwise tangential blowing on a wing-flap configuration. It is demonstrated that a gradually varied CC blowing can totally eliminate the flap-edge vortex, thus reducing the flap-edge noise. The second case involves spanwise tangential blowing over a rectangular wing with a rounded wing tip. It is found that CC blowing can not totally cancel or eliminate the tip vortex. However, it can control and modify the location of the tip vortex, and increase the vertical clearance between the wing and the tip vortex, thus reducing the blade vortex interaction and the BVI noise.
590 $a School code: 0078.
650 4 $a Engineering, Aerospace. $3 1018395
690 $a 0538
710 2 0 $a Georgia Institute of Technology. $3 696730
773 0 $t Dissertation Abstracts International $g 64-03B.
790 1 0 $a Sankar, Lakshmi N., $e advisor
790 $a 0078
791 $a Ph.D.
792 $a 2003
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3084981