Three-dimensional transition of the flow past a cylinder fitted with helical strakes

Francisco Jose Gomez Carrasco, Jose Hermida-Quesada, Raquel Gomez Miguel, Vassilis Theofilis, Bruno Souza Carmo, Julio Romano Meneghini

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Helical strakes are the most employed devices to mitigate or suppress vortex-induced vibrations of circular cylinders. Although several investigations have been performed in order to predict the performance of these devices, proving its efficiency in specific configurations, little is understood regarding the physical mechanisms leading to the efficiency of these devices. Direct Numerical Simulation and three-dimensional global (TriGlobal) analysis of the flow around a cylinder fitted with helical strakes is performed at low Reynolds number in order to identify and understand more deeply the flow instabilities and physical mechanisms that mitigate and suppress the spanwise-correlated vortex-shedding
Original languageEnglish
Title of host publicationInstability and Control of Massively Separated Flows: Proceedings of the International Conference on Instability and Control of Massively Separated Flows, held in Prato, Italy, from 4-6 September 2013
EditorsVassilis Theofilis, Julio Soria
Place of PublicationCham Switzerland
Pages111 - 116
Number of pages6
ISBN (Print)9783319062594
Publication statusPublished - 2015

Publication series

NameFluid Mechanics and Its Applications

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