Optimization of drag reduction on a cylinder undergoing rotary oscillations

Arshad Mehmood, Imran Akhtar, Mehdi Ghommem, Muhammad R. Hajj, Layne T. Watson

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

2 Scopus citations

Abstract

Drag reduction through oscillating a circular cylinder rotationally is optimized. The optimization is performed by combining a CFD solver with a global deterministic optimization algorithm. The use of this optimization tool allows for a rapid determination of the rotational amplitude and frequency domains that yield minimum drag. We observe that the rotational oscillations significantly affect the pattern of shedding vortices and find that the mean drag is decreased at the relatively higher forcing frequencies. The results show that there is a threshold of the rotational oscillation amplitude below which the mean drag does not decrease for any excitation frequency.

Original languageEnglish
Title of host publication52nd AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference
DOIs
StatePublished - 2011
Event52nd AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference - Denver, CO, United States
Duration: 4 Apr 20117 Apr 2011

Publication series

NameCollection of Technical Papers - AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference
ISSN (Print)0273-4508

Conference

Conference52nd AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference
Country/TerritoryUnited States
CityDenver, CO
Period4/04/117/04/11

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