Numerical Simulation of Flow over a Circular Cylinder at Low Reynolds Number

Abstract:

The hydrodynamic characteristics of a circular cylinder in two-dimensional unsteady uniform cross flow was simulated numerically by the laminar model with the reasonable mesh used the method of fluent. The focus of this numerical simulation was to research the characteristics of pressure distribution, drag coefficient and lift coefficient, and the Strouhal number was calculated at Reynolds-numbers value of 200. The results agree well with experimental data and other numerical results according to the reference. In order to study the control measures of the flow over a circular cylinder, the different baffles inserted at various locations downstream of the cylinder have been compared. The results shows that the vortex shedding of flow over a circular cylinder could be well controlled by place the baffle at a right position of the downstream medial axis of the cylinder, which could reduce drag and resist vibration.

• Periodical: Advanced Materials Research (Volumes 255-260)
• Pages: 942-946
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.255-260.942
• Online since: May 2011
• Authors: Hua Bai, Jia Wu Li
• Keywords: Circular Cylinder, Control Measure, Drag Coefficient, Numerical Simulation, Pressure Coefficient, Strouhal Number

References

[1] B.N. Rajani, A. Kandasamy and Sekhar Majumdar: Applied Mathematical Modelling Vol. 33 (2009), p.1228–1247

DOI: 10.1016/j.apm.2008.01.017

[2] LI Shou-ying , GU Ming: Acta Aerodynamica Sinica, Vol. 23(2005), pp.223-227, in Chinese.

[3] Su Ming-de, Kang Qin-jun: Acta Mechanica Sinica, Vol. 31(1999), pp.101-103, in Chinese.

[4] Nishimura H , Taniike Y: Journal of Wind Engineering and Industrial Aerodynamics Vol. 89(2001), pp.713-723.

[5] ZHANG Qun-feng, HE Hong-tao and LU Zhi-yong: Science Technology and Engineering Vol. 9(2009), pp.1187-1189, in Chinese.

[6] CHANG Shu-ping, WANG Yong-sheng and PANG Zhi-yang: Ship Science and Technology Vol. 31(2009), pp.30-33, in Chinese.

[7] FAN Bao-chun, ZHANG Hui, CHEN Zhi-hua et al: Acta Aerodynamica Sinica, Vol. 25(2007), pp.97-98, in Chinese.

[8] Gerrard J H: J FluidMech, Vol. 25(1966), pp.401-413

[9] Dong Shuang-ling, Wu Song-ping: Journal of Beijing University of Aeronautics and Astronautics. Vol. 35(2009), pp.933-935, in Chinese.

[10] Dong Shuang-ling, Wu Song-ping: Journal of Beijing University of Aeronautics and Astronautics. Vol. 35(2009), pp.758-761, in Chinese.