Global-local optimization of flapping kinematics in hovering flight

Handle URI:
http://hdl.handle.net/10754/562797
Title:
Global-local optimization of flapping kinematics in hovering flight
Authors:
Ghommem, Mehdi; Hajj, M. R.; Mook, Dean T.; Stanford, Bret K.; Béran, Philip S.; Watson, Layne T.
Abstract:
The kinematics of a hovering wing are optimized by combining the 2-d unsteady vortex lattice method with a hybrid of global and local optimization algorithms. The objective is to minimize the required aerodynamic power under a lift constraint. The hybrid optimization is used to efficiently navigate the complex design space due to wing-wake interference present in hovering aerodynamics. The flapping wing is chosen so that its chord length and flapping frequency match the morphological and flight properties of two insects with different masses. The results suggest that imposing a delay between the different oscillatory motions defining the flapping kinematics, and controlling the way through which the wing rotates at the end of each half stroke can improve aerodynamic power under a lift constraint. Furthermore, our optimization analysis identified optimal kinematics that agree fairly well with observed insect kinematics, as well as previously published numerical results.
KAUST Department:
Numerical Porous Media SRI Center (NumPor); Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
Publisher:
SAGE Publications
Journal:
International Journal of Micro Air Vehicles
Issue Date:
Jun-2013
DOI:
10.1260/1756-8293.5.2.109
Type:
Article
ISSN:
17568293
Sponsors:
Support of the Air Force Research Laboratory under Contract FA 8650-09-02-3938 is acknowledged. The authors are grateful to Prof. Svanberg who kindly supplied us the optimization package GCMMA, Prof. Nuhait who provided us the results reported in Figure 2, and finally H. Taha of Virginia Tech for his help in discussing the physics of the optimized hovering kinematics.
Appears in Collections:
Articles; Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division

Full metadata record

DC FieldValue Language
dc.contributor.authorGhommem, Mehdien
dc.contributor.authorHajj, M. R.en
dc.contributor.authorMook, Dean T.en
dc.contributor.authorStanford, Bret K.en
dc.contributor.authorBéran, Philip S.en
dc.contributor.authorWatson, Layne T.en
dc.date.accessioned2015-08-03T11:06:07Zen
dc.date.available2015-08-03T11:06:07Zen
dc.date.issued2013-06en
dc.identifier.issn17568293en
dc.identifier.doi10.1260/1756-8293.5.2.109en
dc.identifier.urihttp://hdl.handle.net/10754/562797en
dc.description.abstractThe kinematics of a hovering wing are optimized by combining the 2-d unsteady vortex lattice method with a hybrid of global and local optimization algorithms. The objective is to minimize the required aerodynamic power under a lift constraint. The hybrid optimization is used to efficiently navigate the complex design space due to wing-wake interference present in hovering aerodynamics. The flapping wing is chosen so that its chord length and flapping frequency match the morphological and flight properties of two insects with different masses. The results suggest that imposing a delay between the different oscillatory motions defining the flapping kinematics, and controlling the way through which the wing rotates at the end of each half stroke can improve aerodynamic power under a lift constraint. Furthermore, our optimization analysis identified optimal kinematics that agree fairly well with observed insect kinematics, as well as previously published numerical results.en
dc.description.sponsorshipSupport of the Air Force Research Laboratory under Contract FA 8650-09-02-3938 is acknowledged. The authors are grateful to Prof. Svanberg who kindly supplied us the optimization package GCMMA, Prof. Nuhait who provided us the results reported in Figure 2, and finally H. Taha of Virginia Tech for his help in discussing the physics of the optimized hovering kinematics.en
dc.publisherSAGE Publicationsen
dc.subjecthovering flightsen
dc.subjectkinematics optimizationen
dc.subjectUnsteady vortex lattice methoden
dc.titleGlobal-local optimization of flapping kinematics in hovering flighten
dc.typeArticleen
dc.contributor.departmentNumerical Porous Media SRI Center (NumPor)en
dc.contributor.departmentComputer, Electrical and Mathematical Sciences and Engineering (CEMSE) Divisionen
dc.identifier.journalInternational Journal of Micro Air Vehiclesen
dc.contributor.institutionDepartment of Engineering Science and Mechanics, Virginia Polytechnic Institute, State University, Blacksburg, VA 24061, United Statesen
dc.contributor.institutionAir Force Research Laboratory, Wright-Patterson AFB, OH 45433-7542, United Statesen
dc.contributor.institutionDepartment of Computer Science and Mathematics Virginia Polytechnic Institute, State University, Blacksburg, VA 24061, United Statesen
kaust.authorGhommem, Mehdien
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