Flow around an oscillating circular disk at low to moderate Reynolds numbers

Xinliang Tian, Longfei Xiao, Xiangdong Zhang, Jianmin Yang, Longbin Tao, Dan Yang

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Direct numerical simulations of the flow induced by a circular disk oscillating sinusoidally along its axis are performed. The aspect ratio of the disk is 10. The Reynolds number , based on the maximum speed and the diameter of the disk, is in the range of . The Keulegan-Carpenter number is in the range of . Five flow regimes are observed in the considered-space: (I) axisymmetric flow (AS), (II) planar symmetric flow in the low-region (PSL), (III) azimuthally rotating flow in the low-region (ARL), (IV) planar symmetric flow in the high-region (PSH) and (V) azimuthally rotating flow in the high-region (ARH). The critical boundaries between different flow regimes are identified based on the evolutions of the magnitude and direction of transverse force acting on the disk. For the non-axisymmetric flow regimes, the flow is one-sided with respect to the axis of the disk and is associated with a non-zero mean value of the transverse force acting on the disk.

LanguageEnglish
Pages1119-1145
Number of pages27
JournalJournal of Fluid Mechanics
Volume812
Early online date12 Jan 2017
DOIs
Publication statusPublished - 10 Feb 2017

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Direct numerical simulation
Aspect ratio
Reynolds number
axisymmetric flow
direct numerical simulation
aspect ratio

Keywords

  • flow-structure interactions
  • vortex instability
  • 0vortex interactions

Cite this

Tian, Xinliang ; Xiao, Longfei ; Zhang, Xiangdong ; Yang, Jianmin ; Tao, Longbin ; Yang, Dan. / Flow around an oscillating circular disk at low to moderate Reynolds numbers. In: Journal of Fluid Mechanics. 2017 ; Vol. 812. pp. 1119-1145.
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Flow around an oscillating circular disk at low to moderate Reynolds numbers. / Tian, Xinliang; Xiao, Longfei; Zhang, Xiangdong; Yang, Jianmin; Tao, Longbin; Yang, Dan.

In: Journal of Fluid Mechanics, Vol. 812, 10.02.2017, p. 1119-1145.

Research output: Contribution to journalArticle

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T1 - Flow around an oscillating circular disk at low to moderate Reynolds numbers

AU - Tian, Xinliang

AU - Xiao, Longfei

AU - Zhang, Xiangdong

AU - Yang, Jianmin

AU - Tao, Longbin

AU - Yang, Dan

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