Theses and Dissertations from UMD

Permanent URI for this communityhttp://hdl.handle.net/1903/2

New submissions to the thesis/dissertation collections are added automatically as they are received from the Graduate School. Currently, the Graduate School deposits all theses and dissertations from a given semester after the official graduation date. This means that there may be up to a 4 month delay in the appearance of a give thesis/dissertation in DRUM

More information is available at Theses and Dissertations at University of Maryland Libraries.

Browse

Filters

20131

Settings

Author: search.filters.author.Bush, Brandon LamarSubject: search.filters.subject.Flapping Wing

Search Results

Now showing 1 - 1 of 1
  • Thumbnail Image
    Item
    A Computational Study of the Force Generation Mechanisms in Flapping-Wing Hovering Flight
    (2013) Bush, Brandon Lamar; Baeder, James D; Aerospace Engineering; Digital Repository at the University of Maryland; University of Maryland (College Park, Md.)
    An incompressible Navier-Stokes computational fluid dynamics (CFD) solver is developed for simulating flapping wings at Reynolds numbers (Re) of approximately 102 - 103 in which the governing equations are solved in an immersed boundary framework on fixed Cartesian meshes. The dissertation work is divided into two portions: (1) Implementation of the immersed boundary method for incompressible low-Re flowfields. The applicability and robustness of various solution schemes are studied, with specific applicability to low Re biological flows (staggered variable formulations versus collocated implementations, upwind schemes as applied to incompressible flows, ray-tracing and geometric optimization of immersed boundary determination, Large Eddy Simulation (LES) model implementations). (2) The extension and application of the flow solver (IBINS) to model flapping-wing kinematics, and the analysis of the influence of kinematics and flow parameters on the force production for idealized flapping strokes. A representative Drosophila wing is simulated undergoing an idealized periodic flapping stroke. A detailed characterization of the vortical structures that develop in the near and far wake, along with their correlation with the force and power time histories, is given for simulations of various stroke kinematics at Re = 147 and Re = 1400.