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Boundary layer control on a circular...

Florida Atlantic University.

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Boundary layer control on a circular cylindrical body through oscillating Lorentz forcing.

Record Type:	Language materials, printed : Monograph/item
Title/Author:	Boundary layer control on a circular cylindrical body through oscillating Lorentz forcing./
Author:	Seltzer, Ryan K.
Description:	108 p.
Notes:	Adviser: Manhar Dhanak.
Contained By:	Masters Abstracts International46-02.
Subject:	Engineering, Marine and Ocean. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=1447942
ISBN:	9780549201410

Boundary layer control on a circular cylindrical body through oscillating Lorentz forcing.
Seltzer, Ryan K.

Boundary layer control on a circular cylindrical body through oscillating Lorentz forcing. - 108 p.

Adviser: Manhar Dhanak.

Thesis (M.S.)--Florida Atlantic University, 2007.

Boundary layer control on a circular cylindrical body through oscillating Lorentz forcing is studied by means of numerical simulation of the vorticity-stream function formulation of the Navier-Stokes equations. The model problem considers axisymmetric seawater flow along an infinite cylinder controlled by an idealized radially directed Lorentz force oscillating spatially and temporally. Under optimum forcing parameters, it is shown that sustainable Lorentz induced vortex rings can travel along the cylinder at a speed equivalent to the phase speed of forcing. Wall stress is shown to locally change sign in the region adjacent to the vortex, considerably decreasing net viscous drag. Adverse flow behaviors are revealed as a result of studying the effects of the Reynolds numbers, strength of the Lorentz force, and phase speed of forcing for boundary layer control. Adverse flow behaviors include complex vortex configurations found for suboptimal forcing resulting in a considerable increase in wall stress.

ISBN: 9780549201410Subjects--Topical Terms:

1019064
Engineering, Marine and Ocean.

Boundary layer control on a circular cylindrical body through oscillating Lorentz forcing.
LDR:01864nam 2200265 a 45 001 861290
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008 100719s2007 ||||||||||||||||| ||eng d
020 $a 9780549201410
035 $a (UMI)AAI1447942
035 $a AAI1447942
040 $a UMI $c UMI
100 1 $a Seltzer, Ryan K. $3 1028972
245 1 0 $a Boundary layer control on a circular cylindrical body through oscillating Lorentz forcing.
300 $a 108 p.
500 $a Adviser: Manhar Dhanak.
500 $a Source: Masters Abstracts International, Volume: 46-02, page: 1101.
502 $a Thesis (M.S.)--Florida Atlantic University, 2007.
520 $a Boundary layer control on a circular cylindrical body through oscillating Lorentz forcing is studied by means of numerical simulation of the vorticity-stream function formulation of the Navier-Stokes equations. The model problem considers axisymmetric seawater flow along an infinite cylinder controlled by an idealized radially directed Lorentz force oscillating spatially and temporally. Under optimum forcing parameters, it is shown that sustainable Lorentz induced vortex rings can travel along the cylinder at a speed equivalent to the phase speed of forcing. Wall stress is shown to locally change sign in the region adjacent to the vortex, considerably decreasing net viscous drag. Adverse flow behaviors are revealed as a result of studying the effects of the Reynolds numbers, strength of the Lorentz force, and phase speed of forcing for boundary layer control. Adverse flow behaviors include complex vortex configurations found for suboptimal forcing resulting in a considerable increase in wall stress.
590 $a School code: 0119.
650 4 $a Engineering, Marine and Ocean. $3 1019064
690 $a 0547
710 2 $a Florida Atlantic University. $3 1017837
773 0 $t Masters Abstracts International $g 46-02.
790 $a 0119
790 1 0 $a Dhanak, Manhar, $e advisor
791 $a M.S.
792 $a 2007
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=1447942