Fabrication and characterization of folded foils supporting streamwise traveling waves
Name
18.06.iutam.waves.pdf
Description
Submitted version
Size
2.27 MB
Format
Adobe PDF
Checksum (MD5)
573acf55a9d00c8fa0aa757e86cfa0fd
Author(s)
Calisch, Sam
Gershenfeld, Neil
Fan, Dixia
Jodin, Gurvan
Triantafyllou, Michael
Date Issued
2019
Journal
Journal of Fluids and Structures
Publisher
Elsevier BV
Version
Original manuscript
Abstract
© 2019 Elsevier Ltd A body of work has grown around the use of small amplitude traveling waves on aerodynamic and hydrodynamic surfaces for boundary layer control. In particular, when the traveling wave speed exceeds the free stream velocity, significant drag reductions have been shown in simulation. Building viable prototypes to test these hypotheses, however, has proven challenging. In this paper, we describe a candidate system for constructing structural airfoils and hydrofoils with embedded electromagnetic actuators for driving high velocity traveling waves. Our approach relies on the fabrication of planar substrates which are populated with electromagnetic components and then folded into a prescribed three dimensional structure with actuators embedded. We first specify performance characteristics based on hydrodynamic requirements. We then describe the fabrication of fiber-reinforced polymer composite substrates with prescribed folding patterns to dictate three dimensional shape. We detail the development of a miniaturized single-phase linear motor which is compatible with this approach. Finally, we compare the predicted and measured force produced by these linear motors and plot trajectories for a 200 Hz driving frequency.
MIT Department
Massachusetts Institute of Technology. Center for Bits and Atoms
Massachusetts Institute of Technology. Center for Ocean Engineering
Terms of Use
Creative Commons Attribution-NonCommercial-NoDerivs License
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1016/j.jfluidstructs.2019.01.004
