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dc.contributor.authorGhommem, Mehdi
dc.contributor.authorCalo, Victor M.
dc.date.accessioned2021-03-21T10:11:44Z
dc.date.available2021-03-21T10:11:44Z
dc.date.issued2014-05
dc.date.submitted2013-09-12
dc.identifier.citationGhommem, M., & Calo, V. M. (2014). Flapping wings in line formation flight: a computational analysis. The Aeronautical Journal, 118(1203), 485–501. doi:10.1017/s0001924000009325
dc.identifier.issn0001-9240
dc.identifier.issn2059-6464
dc.identifier.doi10.1017/s0001924000009325
dc.identifier.urihttp://hdl.handle.net/10754/668154
dc.description.abstractThe current understanding of the aerodynamics of birds in formation flights is mostly based on field observations. The interpretation of these observations is usually made using simplified aerodynamic models. Here, we investigate the aerodynamic aspects of formation flights. We use a potential flow solver based on the unsteady vortex lattice method (UVLM) to simulate the flow over flapping wings flying in grouping arrangements and in proximity of each other. UVLM has the capability to capture unsteady effects associated with the wake. We demonstrate the importance of properly capturing these effects to assess aerodynamic performance of flapping wings in formation flight. Simulations show that flying in line formation at adequate spacing enables significant increase in the lift and thrust and reduces power consumption. This is mainly due to the interaction between the trailing birds and the previously-shed wake vorticity from the leading bird. Moreover, enlarging the group of birds flying in formation further improves the aerodynamic performance for each bird in the flock. Therefore, birds get significant benefit of such organised patterns to minimise power consumption while traveling over long distances without stop and feeding. This justifies formation flight as being beneficial for bird evolution without regard to potential social benefits, such as, visual and communication factors for group protection and predator evasion.
dc.publisherCambridge University Press (CUP)
dc.relation.urlhttps://www.cambridge.org/core/product/identifier/S0001924000009325/type/journal_article
dc.rightsArchived with thanks to The Aeronautical Journal
dc.titleFlapping wings in line formation flight: a computational analysis
dc.typeArticle
dc.contributor.departmentComputer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
dc.contributor.departmentEarth Science and Engineering Program
dc.contributor.departmentNumerical Porous Media SRI Center (NumPor)
dc.contributor.departmentPhysical Science and Engineering (PSE) Division
dc.identifier.journalThe Aeronautical Journal
dc.rights.embargodate2014-11-01
dc.eprint.versionPost-print
dc.identifier.volume118
dc.identifier.issue1203
dc.identifier.pages485-501
kaust.personGhommem, Mehdi
kaust.personCalo, Victor M.
dc.date.accepted2013-12-21
dc.date.published-online2016-01-27


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