NDLI: Suppression of vortex shedding behind a circular cylinder by another control cylinder at low Reynolds numbers

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Suppression of vortex shedding behind a circular cylinder by another control cylinder at low Reynolds numbers

Content Provider	Semantic Scholar
Author	Dipankar, Anurag Sengupta, Tapan K. Srikanth B. Talla
Copyright Year	2007
Abstract	Vortex shedding behind a cylinder can be controlled by placing another small cylinderbehind it, at low Reynolds numbers. This has been demonstrated experimentally byStrykowski & Sreenivasan (J. Fluid Mech. vol. 218, 1990, p. 74). These authorsalso provided preliminary numerical results, modelling the control cylinder by theinnovative application of boundary conditions on some selective nodes. There areno other computational and theoretical studies that have explored the physicalmechanism. In the present work, using an over-set grid method, we report and verifynumerically the experimental results for ﬂow past a pair of cylinders. Apart fromproviding an accurate solution of the Navier–Stokes equation, we also employ anenergy-based receptivity analysis method to discuss some aspects of the physicalmechanism behind vortex shedding and its control. These results are compared withthe ﬂow picture developed using a dynamical system approach based on the properorthogonal decomposition (POD) technique.
Starting Page	171
Ending Page	190
Page Count	20
File Format	PDF HTM / HTML
DOI	10.1017/S002211200600382X
Volume Number	573
Alternate Webpage(s)	http://home.iitk.ac.in/~tksen/TKsite/PDF/JFM_SUPPRESSION.pdf
Alternate Webpage(s)	https://doi.org/10.1017/S002211200600382X
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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