Numerical study on the vortex-induced vibration of a circular cylinder in viscoelastic fluids

Xiong，Yongliang1,2; Peng，Sai1,2,3; Zhang，Mengqi4; Yang，Dan5

2019-10-01

10.1016/j.jnnfm.2019.104170

JOURNAL OF NON-NEWTONIAN FLUID MECHANICS   影响因子和分区

0377-0257

1873-2631

The vortex-induced vibration (VIV) in a Newtonian fluid has been widely studied due to its significance in many industrial applications. However, it could be significantly affected by the addition of polymer. In this work, we investigate the viscoelastic effect on the VIV of a circular cylinder whose motion is confined in the cross-flow direction. The Arbitrary Lagrangian–Eulerian (ALE) based finite volume method is used to carry out the two-dimensional simulations at the Reynolds number (Re) range of 30–500. The nonlinear FENE-P model is used to characterize the polymeric viscoelastic fluids. The results show that the addition of polymers in a Newtonian fluid can suppress the VIV amplitude of the cylinder since the polymer can significantly modify the vortex pattern and inhibit the fluctuation in flow. Both higher Weissenberg Number (We) and larger maximum polymer extensibility can reinforce this tendency. Furthermore, the corresponding reduced velocity for the peak of maximum vibration amplitude increases as the increase of Weissenberg number. This is because that the viscoelasticity can reduce the characteristic frequency in the wake flow. Finally, the viscoelasticity can increase the critical Re of the structure vibrations implying a more stable flow.

Circular cylinder FENE-P Numerical simulation Vortex-induced vibration

SCI ; EI

英语

其他

Ministry of Education, Singapore (MOE WBS)[R-265-000-661-112]

Mechanics

Mechanics

WOS:000497249400008

ELSEVIER

20194007495369

Circular cylinders ; Computer simulation ; Finite volume method ; Fluid structure interaction ; Newtonian liquids ; Reynolds number ; Vibrations (mechanical) ; Viscoelasticity ; Vortex flow

Fluid Flow, General:631.1 ; Computer Applications:723.5 ; Polymeric Materials:815.1 ; Numerical Methods:921.6 ; Mechanics:931.1 ; Physical Properties of Gases, Liquids and Solids:931.2

ENGINEERING

2-s2.0-85072808177

Scopus

1.Department of MechanicsHuazhong University of Science and Technology (HUST),Wuhan,430074,China
2.Hubei Key Laboratory of Engineering Structural Analysis and Safety Assessment,Wuhan,Luoyu Road 1037,430074,China
3.Department of Mechanics and aerospaceSouthern University of Science and Technology,Shenzhen,518055,China
4.Department of Mechanical EngineeringNational University of Singapore,Singapore,9 Engineering Drive 1,117575,Singapore
5.School of Naval Architecture and Ocean EngineeringHuazhong University of Science and Technology (HUST),Wuhan,430074,China

Xiong，Yongliang,Peng，Sai,Zhang，Mengqi,et al. Numerical study on the vortex-induced vibration of a circular cylinder in viscoelastic fluids[J]. JOURNAL OF NON-NEWTONIAN FLUID MECHANICS,2019,272.

Xiong，Yongliang,Peng，Sai,Zhang，Mengqi,&Yang，Dan.(2019).Numerical study on the vortex-induced vibration of a circular cylinder in viscoelastic fluids.JOURNAL OF NON-NEWTONIAN FLUID MECHANICS,272.

Xiong，Yongliang,et al."Numerical study on the vortex-induced vibration of a circular cylinder in viscoelastic fluids".JOURNAL OF NON-NEWTONIAN FLUID MECHANICS 272(2019).