Three-Dimensional Instability of an Oscillating Viscous Flow Past a Circular Cylinder

LU Xi-yun; LING Guo-can

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Article Navigation > Applied Mathematics and Mechanics > 2003 > 24(7): 699-707

LU Xi-yun, LING Guo-can. Three-Dimensional Instability of an Oscillating Viscous Flow Past a Circular Cylinder[J]. Applied Mathematics and Mechanics, 2003, 24(7): 699-707.

Citation:

LU Xi-yun, LING Guo-can. Three-Dimensional Instability of an Oscillating Viscous Flow Past a Circular Cylinder[J]. Applied Mathematics and Mechanics, 2003, 24(7): 699-707.

Citation:

LU Xi-yun, LING Guo-can. Three-Dimensional Instability of an Oscillating Viscous Flow Past a Circular Cylinder[J]. Applied Mathematics and Mechanics, 2003, 24(7): 699-707.

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Three-Dimensional Instability of an Oscillating Viscous Flow Past a Circular Cylinder

LU Xi-yun^1,2,
LING Guo-can²

1.
Department of Mechanics and Mechanical Engineering, University of Science and Technology of China, Hefei 230026, P. R. China;
2.
Stateof Sciences, Beijing 100080, P. R. China

Received Date: 2002-01-27
Rev Recd Date: 2003-03-18
Publish Date: 2003-07-15

Abstract

Abstract

A systematically numerical study of the sinusoidally oscillating viscous flow around a circular cylinder was performed to investigate vortical instability by solving the three-dimensional incompressible Navier-Stokes equations.The transition from twoto three-dimensional flow structures along the axial direction due to the vortical instability appears,and the three-dimensional structures lie alternatively on the two sides of the cylinder.Numerical study has been taken for the Keulegan-Carpenter(KC) numbers from 1 to 3.2 and frequency parameters from 100 to 600.The force behaviors are also studied by solving the Morison equation.Calculated results agree well with experimental data and theoretical prediction.
- Navier-Stokes equation,
- Reynolds number,
- Keulegan-Carpenter number,
- Morison equation

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References(11)

References

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