Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/5085
Title: Lattice-Boltzmann simulation of two-dimensional flow over two vibrating side-by-side circular cylinders
Authors: Xu, Yousheng
Liu, Y.
Xia, Yong
Wu, Fengmin
Subjects: Flow simulation
Lattice Boltzmann methods
Vortices
Wakes
Issue Date: 27-Oct-2008
Publisher: American Physical Society
Source: Physical review E, statistical, nonlinear, and soft matter physics, Oct. 2008, v. 78, no. 4, 046314, p. 1-12.
Abstract: A numerical simulation using the multiple relaxation time lattice-Boltzmann method is carried out for the purpose of investigating fluid flow over two vibrating side-by-side circular cylinders and the effect of moving the cylinders on the wake characteristics. As a benchmark problem to assess the validity and efficiency of the model, the calculation was carried out at Reynolds number of 200 and four pitch ratios (T∕D, where D is the cylinder diameter while T is the center-to-center spacing between the two cylinders) of 1.2, 1.6, 2.2, and 3.2, respectively. The calculated results indicate that the vibration of the cylinder pair has significant influence on the wake patterns. When the amplitude of vibration is big enough, the vibration locks up the vortex shedding and formation. For each cylinder vibration frequency, there exists a threshold of vibration amplitude for the lock-up phenomenon. With the vibration frequency is increased, the threshold of vibration amplitude decreases.
Rights: Physical Review E © 2008 The American Physical Society. The Journal's web site is located at http://pre.aps.org/
Type: Journal/Magazine Article
URI: http://hdl.handle.net/10397/5085
DOI: 10.1103/PhysRevE.78.046314
ISSN: 1539-3755 (print)
1550-2376 (online)
Appears in Collections:ME Journal/Magazine Articles

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