Flow-induced vibrations of four circular cylinders with square arrangement at low Reynolds numbers

Han, Zhaolong; Zhou, Dai; He, Tao; Tu, Jiahuang; Li, Chunxiang; Kwok, K.C.S.; Fang, Congqi

doi:10.1016/j.oceaneng.2014.12.002

Cited by 44 publications

(16 citation statements)

References 37 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The author and his co-workers have conducted a series of FSI studies by using the fully incompressible CBS scheme [15][16][17][26][27][28][29]. In these studies, the obtained results agree well with available data and some important phenomena of flow-induced vibrations are detected successfully.…”

Section: Brief On Cbs Scheme With Applications To Moving Mesh Problemssupporting

confidence: 61%

A CBS-based partitioned semi-implicit coupling algorithm for fluid–structure interaction using MCIBC method

2016

Computer Methods in Applied Mechanics and Engineering

Self Cite

View full text Add to dashboard Cite

The characteristic-based split (CBS) scheme has been extensively utilized to address the fluid subproblem within fluid-structure interaction (FSI) analyses over the past decade. To cope with FSI, this article develops a CBS-based partitioned semi-implicit coupling algorithm where the CBS scheme serves not only for the fluid component but also for the entire coupling algorithm. At each time instant, the first step of the CBS scheme is explicitly treated together with the fluid mesh movement, while the remaining two steps are implicitly coupled with the structural motion on the fluid mesh frozen temporarily. To retrieve the semi-implicit coupling style, a mass source term is iteratively updated in the pressure Poisson equation for elements adhering to the fluid-structure interface. The present algorithm provides the stabilized solution of the Navier-Stokes equations and the computational reduction without stability drop, thus inheriting the virtues of the CBS scheme and the projection-based semi-implicit coupling method. Within our coupling algorithm, FSI is achieved by the modified combined interface boundary condition (MCIBC) method which is re-derived in a more concise fashion. A weak implementation of the MCIBC method is proposed to avoid deteriorating the numerical results. The MCIBC method rectifies the limitations of its original counterpart, making itself applicable to fluid-rigid/flexible body interaction. Flow-induced vibrations of various bluff bodies are analyzed to test the feasibility of the proposed methodology. The overall numerical results agree well with the existing data, demonstrating the validity and the applicability of the present approach.

show abstract

Section: Brief On Cbs Scheme With Applications To Moving Mesh Problemssupporting

confidence: 61%

A CBS-based partitioned semi-implicit coupling algorithm for fluid–structure interaction using MCIBC method

2016

Computer Methods in Applied Mechanics and Engineering

Self Cite

View full text Add to dashboard Cite

show abstract

“…The computational code has been verified in our previous work [21,29]. We further validate the accuracy of the computational approach by using it to solve the VIV of an isolated cylinder with two degrees of freedom in uniform cross-flow.…”

Section: Code Verificationmentioning

confidence: 80%

Flow characteristics and dynamic responses of a rear circular cylinder behind the square cylinder with different side lengths

Tu¹,

Sun²,

Zhou³

et al. 2017

J. vibroeng.

Self Cite

View full text Add to dashboard Cite

Wake-induced vibrations of a 2-DOF circular cylinder which is placed behind a stationary square cylinder with tandem arrangement are numerically investigated at low Reynolds numbers by using semi-implicit Characteristics-based split (CBS) finite element algorithm in this study. Numerical results demonstrate that the side length of the upstream square cylinder can significantly affect the characteristics of flow patterns, oscillation frequency, maximum amplitudes, -trajectories, and hydrodynamic coefficients of the rear circular cylinder. The predominant vortex shedding patterns are 2S, 2P and 2T mode. In addition to the figure "8", "raindrop" and figure "dual-8" are observed in the -vibrating trajectories for the circular cylinder. Finally, the interactions between cylinders are revealed according to the phase portrait of fluid force to displacement and the power spectral densities (PSD) features of the vibration amplitude on the rear circular cylinder and the instantaneous flow field, together with the wakeinduced vibration (WIV) mechanism underlying the oscillation characteristics of the circular cylinder behind a stationary square cylinder with different sizes.Keywords: wake-induced vibration, wake pattern, dynamic response, semi-implicit characteristic-based split finite element method.

show abstract

“…Significant complicated aerodynamic interference effects were observed between three cylinders. Several other literatures related to three or more cylinders are also published [13][14][15][16][17][18][19]. To conclude, all the above researches showed that the flow patterns and force characteristics are the results of the combined effect of Re, spacing distance, configuration arrangement, and incident angle.…”

Section: Introductionmentioning

confidence: 87%

Spectral Element Numerical Investigation of Flow between Three Cylinders in an Equilateral‐Triangular Arrangement with Different Spacing Distances

Bao

Qin

et al. 2018

Shock and Vibration

View full text Add to dashboard Cite

Two-dimensional incompressible Navier-Stokes equations are numerically solved using the high resolution spectral element method at Reynolds number 200. The flow between three cylinders in an equilateral-triangular arrangement is investigated. The center-to-center spacing distance ratio between two circular cylinders is varied from 1.5 to 12. Present numerical results show that the flow patterns and force characteristics are the result of the combined effects of Reynolds number, spacing distance, configuration arrangement, and incident angle. For the small spacing distance ratio of 1.5, the well-known biased flow phenomenon in the gap of downstream cylinders is found. And the biased flow is bistable in our study but not monostable. A small spacing distance means lower Strouhal number, drag, and root-mean-square lift coefficients. In the medium spacing distance ratio of 4.0, the suppressed effect of vortex shedding for the presence of the side-by-side downstream cylinders disappeared. Mean drag coefficients of downstream cylinders are basically identical to the value of flow past around a single circular cylinder. For the large spacing distance ratio of 8.0, the effects between three cylinders basically disappeared. The mean drag and lift coefficients, root-mean-square lift coefficients, and Strouhal number of three cylinders are essentially equivalent to those values of a single circular cylinder.

show abstract

Flow-induced vibrations of four circular cylinders with square arrangement at low Reynolds numbers

Cited by 44 publications

References 37 publications

A CBS-based partitioned semi-implicit coupling algorithm for fluid–structure interaction using MCIBC method

A CBS-based partitioned semi-implicit coupling algorithm for fluid–structure interaction using MCIBC method

Flow characteristics and dynamic responses of a rear circular cylinder behind the square cylinder with different side lengths

Spectral Element Numerical Investigation of Flow between Three Cylinders in an Equilateral‐Triangular Arrangement with Different Spacing Distances

Contact Info

Product

Resources

About