Interaction of a dynamic vortex generator with a laminar boundary layer
Authors
Cruz, Erica Jeannette
ORCID
Loading...
Other Contributors
Oehlschlaeger, Matthew A.
Sahni, Onkar
Hicken, Jason
Sahni, Onkar
Hicken, Jason
Issue Date
2015-08
Keywords
Aeronautical engineering
Degree
MEng
Terms of Use
This electronic version is a licensed copy owned by Rensselaer Polytechnic Institute, Troy, NY. Copyright of original work retained by author.
Full Citation
Abstract
Surface oil flow visualization experiments were performed to obtain qualitative information on the structures present in the flow, while Stereoscopic particle image velocimetry (SPIV) was used to provide quantitative measurements of the 3-D flow field at multiple spanwise planes downstream of the VG under both static and dynamic conditions. Several flow features were detected in the oil flow visualization experiments, including two vortical structures—the main vortex and primary horseshoe vortex—which were confirmed in the SPIV results. The time-averaged flow field showed similar results, though the strength of the vortices appeared less when the VG was actuated. However, phase-averaged data revealed the size, strength, and location of the vortices varied as a function of the actuation cycle, with peaks of vorticity magnitude being greater at certain phases as compared to the static case. The varying flow field associated with the dynamic motion of the DVG showed higher levels of turbulent kinetic energy, therefore confirming enhanced mixing in contrast to the static case.
Description
August 2015
School of Engineering
School of Engineering
Department
Dept. of Mechanical, Aerospace, and Nuclear Engineering
Publisher
Rensselaer Polytechnic Institute, Troy, NY
Relationships
Rensselaer Theses and Dissertations Online Collection
Access
Restricted to current Rensselaer faculty, staff and students. Access inquiries may be directed to the Rensselaer Libraries.