Article thumbnail

A computational and experimental study of flexible flapping wing aerodynamics

By H. Aono, S.K. Chimakurthi, P. Wu, E. Sällström, B.K. Stanford, C.E.S. Cesnik, P. Ifju, L. Ukeiley and W. Shyy

Abstract

To gain some more understanding of the flapping wing aerodynamics and aeroelasticity associated with biological flyers and micro air vehicles (MAVs), a combined computational and experimental study of a well characterized flapping wing structure was conducted. In particular, the coupling between aerodynamics and structural dynamics plays an important role in such flyers but to date has not been adequately addressed. An aeroelasticity framework based on a co-rotational shell finite element solver with a Navier-Stokes solver is developed. Experimentally, a customized digital image correlation system measures the wing deformation, a load sensor attached to the flapping mechanism records the forces produced by the flapping motion, and a stereo digital particle image velocimetry measures the flow velocities. Computational efforts with insight into the fluid physics are reported. Relevant fluid physics are documented including the counter-rotating vortices at the leading and the trailing edge which interact with the tip vortex during the wing motion. Overall, good correlations between experiment and computation are attained. Furthermore, studies on hypothetical flexible flapping wing configurations showed that wing flexibility can be tailored to alter the aerodynamics of a flapping wing. © 2010 by the authors

Year: 2010
OAI identifier: oai:repository.ust.hk:1783.1-53457
Download PDF:
Sorry, we are unable to provide the full text but you may find it at the following location(s):
  • http://www.scopus.com/record/d... (external link)
  • Suggested articles


    To submit an update or takedown request for this paper, please submit an Update/Correction/Removal Request.