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

Tu, Jiahuang; Sun, Wenjuan; Zhou, Dai; Han, Zhaolong

doi:10.21595/jve.2017.17611

Cited by 7 publications

(3 citation statements)

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“…To simulate the vibrations of a cylinder, various techniques have been used by the researchers available in the literature. Second order Newmark-β method have been used by [58][59][60]. Papaioannou et al [61] and Han et al [62] also used a numerical technique belonging to the Newmark family.…”

Section: Governing Equations For Fivmentioning

confidence: 99%

“…[65]. Copyright 2014, Elsevier.Tu et al[58] investigated 2DOF WIV of a circular cylinder downstream of the square cylinder, numerically using semi-implicit characteristics-based split (CBS) finite element algorithm. They observed 2S, 2P and 2T modes as shown in Figure23.…”

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confidence: 99%

“…Map of vortex shedding as developed by Tu et al [58].= 2S, = 2S-8, ∆ = 2P, = 2T, solid and hollow figures denote steady and wake in the gap between cylinders, respectively. Reprinted with permission from Ref [58]…”

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Flow-Induced Vibrations of Single and Multiple Heated Circular Cylinders: A Review

et al. 2021

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This study is an effort to encapsulate the fundamentals and major findings in the area of fluid-solid interaction, particularly the flow-induced vibrations (FIV). Periodic flow separation and vortex shedding stretching downstream induce dynamic fluid forces on the bluff body and results in oscillatory motion of the body. The motion is generally referred to as flow-induced vibrations. FIV is a dynamic phenomenon as the motion, or the vibration of the body is subjected to the continuously changing fluid forces. Sometimes FIV is modeled as forced vibrations to mimic the vibration response due to the fluid forces. FIV is a deep concern of engineers for the design of modern heat exchangers, particularly the shell-and-tube type, as it is the major cause for the tube failures. Effect of important parameters such as Reynolds number, spacing ratio, damping coefficient, mass ratio and reduced velocity on the vibration characteristics (such as Strouhal number, vortex shedding, vibration frequency and amplitude, etc.) is summarized. Flow over a bluff body with wakes developed has been studied widely in the past decades. Several review articles are available in the literature on the area of vortex shedding and FIV. None of them, however, discusses the cases of FIV with heat transfer. In particular systems, FIV is often coupled to heat transfer, e.g., in nuclear power plants, FIV causes wear and tear to heat exchangers, which can eventually lead to catastrophic failure. As the circular shape is the most common shape for tubes and pipes encountered in practice, this review will only focus on the FIV of circular cylinders. In this attempt, FIV of single and multiple cylinders in staggered arrangement, including tandem and side-by-side arrangement is summarized for heated and unheated cylinder(s) in the one- and two-degree of freedom. The review also synthesizes the effect of fouling on heat transfer and flow characteristics. Finally, research prospects for heated circular cylinders are also stated.

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Section: Governing Equations For Fivmentioning

confidence: 99%

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Flow-Induced Vibrations of Single and Multiple Heated Circular Cylinders: A Review

et al. 2021

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A Galerkin finite element algorithm based on third‐order Runge‐Kutta temporal discretization along the uniform streamline for unsteady incompressible flows

Liao

Zhang

Chen

2019

Numerical Methods in Fluids

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Summary In this paper, for two‐dimensional unsteady incompressible flow, the Navier‐Stokes equations without convection term are derived by the coordinate transformation along the streamline characteristic. The third‐order Runge‐Kutta method along the streamline is introduced to discrete the alternative Navier‐Stokes equations in time, and spacial discretization is carried out by the Galerkin method, and then, the third‐order accuracy finite element method is obtained. Meanwhile, the streamline velocity is uniformly approximated by initial velocity in each time step in order to reduce update frequency of total element matrix and improve calculation efficiency. Finally, some classic unsteady flow examples are calculated and analyzed by different calculation methods, which further demonstrate that the present method has more advantages in stability, permissible time step, dissipation, computational cost, and accuracy. The code can be downloaded at https://doi.org/10.13140/RG.2.2.27706.44484.

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Time and frequency analysis of fluctuating hydrodynamic forces acting on circular and square cylinders in laminar flows

Kiyoumarsioskouei

Osguei

2023

J Braz. Soc. Mech. Sci. Eng.

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

Cited by 7 publications

References 30 publications

Flow-Induced Vibrations of Single and Multiple Heated Circular Cylinders: A Review

Flow-Induced Vibrations of Single and Multiple Heated Circular Cylinders: A Review

A Galerkin finite element algorithm based on third‐order Runge‐Kutta temporal discretization along the uniform streamline for unsteady incompressible flows

Time and frequency analysis of fluctuating hydrodynamic forces acting on circular and square cylinders in laminar flows

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