國立虎尾科技大學 |

Modeling and Optimization of Embedded Active Flow Control Systems.

Record Type:	Language materials, manuscript : Monograph/item
Title/Author:	Modeling and Optimization of Embedded Active Flow Control Systems./
Author:	Henry, James M.
Description:	1 online resource (147 pages)
Notes:	Source: Dissertations Abstracts International, Volume: 85-11, Section: B.
Contained By:	Dissertations Abstracts International85-11B.
Subject:	Aerospace engineering. -
Online resource:	click for full text (PQDT)
ISBN:	9798382594972

Modeling and Optimization of Embedded Active Flow Control Systems.
Henry, James M.

Modeling and Optimization of Embedded Active Flow Control Systems. - 1 online resource (147 pages)

Source: Dissertations Abstracts International, Volume: 85-11, Section: B.

Thesis (Ph.D.)--Illinois Institute of Technology, 2024.

Includes bibliographical references

This thesis presents research focused on the aerodynamic performance of circulation control on two-dimensional and quasi-two-dimensional wings. Aerodynamic loads, namely lift, drag, and moment coefficients, are measured through Reynolds Averaged Navier Stokes (RANS) modeling and wind tunnel experiment. A simplified and parameterized RANS model is presented as a rapidly iterable approach to estimating the performance of trailing-edge circulation control on two dimensional airfoils, with the hypothesis that an optimized airfoil shape can be found which maximizes the lift coefficient increment generated by circulation control, through modification of the wing profile.The simplified modeling setup is compared with more conventional approaches to numerical simulation of circulation control. The performance of the simplified modeling scheme is then compared with wind tunnel studies, for both steady-state and dynamic performance, as functions of both momentum coefficient dCμ and chord-based Reynolds number Rec. The dynamic performance for the model is studied to find an analog to the theoretical unsteady models of Wagner and Theodorsen. An adjoint optimization framework is used to find an optimal airfoil profile for circulation control. The optimized profile is then compared in both a simulation and a wind tunnel test study against a NACA0015 airfoil. In simulation, improvement between 12% and 15% is seen for the lift control authority for all values of dCμ and Rec tested. In experiment, the optimized profile demonstrated improvements of up to 28% in lift control authority, dCL/dCμ for values of Cμ, and decreased performance for higher values of Cμ.

Electronic reproduction.
Ann Arbor, Mich. :
ProQuest,
2024

Mode of access: World Wide Web

ISBN: 9798382594972Subjects--Topical Terms:

686400
Aerospace engineering.
Subjects--Index Terms:

Circulation controlIndex Terms--Genre/Form:

554714
Electronic books.

Modeling and Optimization of Embedded Active Flow Control Systems.
LDR:03058ntm a22003977 4500 001 1149726
005 20241022112624.5
006 m o d
007 cr bn ---uuuuu
008 250605s2024 xx obm 000 0 eng d
020 $a 9798382594972
035 $a (MiAaPQ)AAI31235232
035 $a AAI31235232
040 $a MiAaPQ $b eng $c MiAaPQ $d NTU
100 1 $a Henry, James M. $3 1476058
245 1 0 $a Modeling and Optimization of Embedded Active Flow Control Systems.
264 0 $c 2024
300 $a 1 online resource (147 pages)
336 $a text $b txt $2 rdacontent
337 $a computer $b c $2 rdamedia
338 $a online resource $b cr $2 rdacarrier
500 $a Source: Dissertations Abstracts International, Volume: 85-11, Section: B.
500 $a Advisor: Williams, David;Dawson, Scott.
502 $a Thesis (Ph.D.)--Illinois Institute of Technology, 2024.
504 $a Includes bibliographical references
520 $a This thesis presents research focused on the aerodynamic performance of circulation control on two-dimensional and quasi-two-dimensional wings. Aerodynamic loads, namely lift, drag, and moment coefficients, are measured through Reynolds Averaged Navier Stokes (RANS) modeling and wind tunnel experiment. A simplified and parameterized RANS model is presented as a rapidly iterable approach to estimating the performance of trailing-edge circulation control on two dimensional airfoils, with the hypothesis that an optimized airfoil shape can be found which maximizes the lift coefficient increment generated by circulation control, through modification of the wing profile.The simplified modeling setup is compared with more conventional approaches to numerical simulation of circulation control. The performance of the simplified modeling scheme is then compared with wind tunnel studies, for both steady-state and dynamic performance, as functions of both momentum coefficient dCμ and chord-based Reynolds number Rec. The dynamic performance for the model is studied to find an analog to the theoretical unsteady models of Wagner and Theodorsen. An adjoint optimization framework is used to find an optimal airfoil profile for circulation control. The optimized profile is then compared in both a simulation and a wind tunnel test study against a NACA0015 airfoil. In simulation, improvement between 12% and 15% is seen for the lift control authority for all values of dCμ and Rec tested. In experiment, the optimized profile demonstrated improvements of up to 28% in lift control authority, dCL/dCμ for values of Cμ, and decreased performance for higher values of Cμ.
533 $a Electronic reproduction. $b Ann Arbor, Mich. : $c ProQuest, $d 2024
538 $a Mode of access: World Wide Web
650 4 $a Aerospace engineering. $3 686400
650 4 $a Mechanical engineering. $3 557493
650 4 $a Fluid mechanics. $3 555551
653 $a Circulation control
653 $a Flow control
653 $a Fluid dynamics
653 $a Shape optimization
653 $a Wind tunnel
655 7 $a Electronic books. $2 local $3 554714
690 $a 0538
690 $a 0548
690 $a 0204
710 2 $a ProQuest Information and Learning Co. $3 1178819
710 2 $a Illinois Institute of Technology. $b Mechanical, Materials and Aerospace Engineering. $3 1180353
773 0 $t Dissertations Abstracts International $g 85-11B.
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=31235232 $z click for full text (PQDT)