Numerical Study of Flapping-Wing Flow Physics in Nonuniform Freestream Using the High-Order Spectral Difference Method on Dynamic Unstructured Grids

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dc.contributor.authorPoudel, Naresh
dc.contributor.authorYu, Meilin
dc.date.accessioned2019-02-11T17:17:04Z
dc.date.available2019-02-11T17:17:04Z
dc.date.issued2018
dc.description2018 Fluid Dynamics Conferenceen_US
dc.description.abstractIn this paper, a numerical study is conducted to understand the impact of nonuniform freestream on the aerodynamic performance of a flapping foil. Specifically, an unsteady flow environment is generated by stationary inline or staggered circular cylinder arrays upstream. A 2D NACA0012 airfoil is then placed at different locations downstream of the cylinder arrays, and oscillates in the nonuniform freestream. Unsteady flows over the flapping foil are numerically simulated by solving the 2D low-Mach-number-preconditioned compressible Naiver-Stokes equations on deformable unstructured grids using the high-order spectral difference method. The flow fields over a pitching airfoil in unsteady flow environments and the corresponding aerodynamic forces are analyzed and compared under different flow conditions. It is observed that the nonuniform freestream can significantly affect the unsteady vortex dynamics of a flapping foil, thus modifying the thrust and lift generation.en_US
dc.description.urihttps://arc.aiaa.org/doi/abs/10.2514/6.2018-3087en_US
dc.format.extent13 pagesen_US
dc.genreconference papers and proceedings preprintsen_US
dc.identifierdoi:10.13016/m2kwmb-k4az
dc.identifier.citationNaresh Poudel and Meilin Yu. "Numerical Study of Flapping-Wing Flow Physics in Nonuniform Freestream Using the High-Order Spectral Difference Method on Dynamic Unstructured Grids", 2018 Fluid Dynamics Conference, AIAA AVIATION Forum, (AIAA 2018-3087), https://doi.org/10.2514/6.2018-3087en_US
dc.identifier.urihttps://doi.org/10.2514/6.2018-3087
dc.identifier.urihttp://hdl.handle.net/11603/12766
dc.language.isoen_USen_US
dc.publisherAIAAen_US
dc.relation.isAvailableAtThe University of Maryland, Baltimore County (UMBC)
dc.relation.ispartofUMBC Mechanical Engineering Department Collection
dc.relation.ispartofUMBC Faculty Collection
dc.relation.ispartofUMBC Student Collection
dc.rightsThis item is likely protected under Title 17 of the U.S. Copyright Law. Unless on a Creative Commons license, for uses protected by Copyright Law, contact the copyright holder or the author.
dc.rights© 2019 AIAA
dc.subjectimpact of nonuniform freestreamen_US
dc.subjectaerodynamic performance of a flapping foilen_US
dc.subjectunsteady flow environmenten_US
dc.subjectnonuniform freestreamen_US
dc.subject2D low-Mach-number-preconditioned compressible Naiver-Stokes equations on deformable unstructured grids using the high-order spectral difference methoden_US
dc.subjectthrust and lift generationen_US
dc.titleNumerical Study of Flapping-Wing Flow Physics in Nonuniform Freestream Using the High-Order Spectral Difference Method on Dynamic Unstructured Gridsen_US
dc.typeTexten_US

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