Document Type

Article

Publication Date

2-5-2009

Abstract

The enhancement or suppression of vortex breakdown in a closed cylinder caused by a small rotating disk embedded in the nonrotating endwall is simulated in this study. This paper shows that corotation or counter-rotation of the control disk with respect to the driving lid is able to promote or suppress the “bubble-type” vortex breakdown. This is achieved using only a small fraction of the power required to drive the main lid. The simulations show that the vortex breakdown induced or suppressed by flow control displays similar characteristics near the breakdown region as produced by varying the flow Reynolds number. These include near-axis swirl, centerline axial velocity, and centerline pressure. The influence of the size of the control disk is also quantified.

Comments

24 October 2015: At the time of publication, Sheridan College author Lewis Mununga was associated with Monash University in Australia.

Original article link: http://scitation.aip.org/content/aip/journal/pof2/21/2/10.1063/1.3073747

Faculty

Faculty of Applied Science & Technology

School

School of Mechanical and Electrical Engineering and Technology

Journal

Physics of Fluids

Version

Publisher's version

Peer Reviewed/Refereed Publication

yes

Terms of Use

Terms of Use for Works posted in SOURCE.

Original Publication Citation

Boon Thong, T., Liow, K., Mununga, L., Thompson, M. C., & Hourigan, K. (2009). Simulation of the control of vortex breakdown in a closed cylinder using a small rotating disk. Physics Of Fluids, 21(2). doi:10.1063/1.3073747

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