Small-size hydro-structure (circular cylinder, etc) in oscillatory flow field

 

The dynamics of a small size structure, such as circular cylinder, near sea-bottom can be treated as in an oscillatory flow field. By this assumption, the following work has been done. LES technique that I developed was employed. Different gap ratio and KC numbers were considered.

 

  1. A circular cylinder in a constant flow field with gap ratio e/D = 0.0, 0.1 and 0.4 to the bottom.

[Movie1], [Movie2], [Movie3], [Movie4], [Movie5], [Movie6]

 

  1. A circular cylinder in an oscillatory flow field with gap ratio e/D = 0.0, 0.1 and 0.4 to the bottom.

[Movie1], [Movie2], [Movie3]

 

Detailed about this work can be found from:

 

(1) Y.C. Li, B. Chen and G. Wang, Physical model test and numerical simulation of pipeline under wave action, Chinese Marine Science Bulletin, 1996, 58-65.

(2) G. Wang, Y.C. Li and G.Z. Lai (1994), FDM-FEM approach for numerical simulations of a circular cylinder in oscillatory plus constant flow coming from arbitrary directions, J. of Hydrodynamics, Ser. A Vol. 9, No. 2, 224-233. (in Chinese)

(3) G. Wang, Y.C. Li and G.Z. Lai, A large eddy simulation scheme of pipeline under regular wave action, ISOPE-96, Los Angeles, California, USA, 1996, ISBN 1-880653-24-9, Volume II, 132-137.

(4) Y.C. Li, B. Chen and G. Wang, Experimental and numerical solutions of undersea pipeline in a regular wave field, Chinese Hydrodynamic Conference, Dalian, PR China, 1995, 1-7 (in Chinese).

(5) G. Wang, Y.C. Li and G.Z. Lai, Large eddy simulation scheme for a pipeline above a horizontal plane boundary, Chinese Hydrodynamic Conference, Dalian, PR China, 1995, 108-115 (in Chinese).

(6) G. Wang, Y.C. Li and G.Z. Lai, FDM-FEM Approach for numerical simulations of a circular cylinder in oscillatory plus mean flow coming from arbitrary directions, ICHD'94, Wuxi, PR China, 1994, 515-522.

(7) G. Wang, Y.C. Li and G.Z. Lai, FDM-FEM approach for numerical simulations of a pipeline near the sea bottom, Chinese Hydrodynamic Conference, Huangshan, PR China, 1994, 467-473 (in Chinese).

(8) Numerical study of a circular cylinder in an oscillatory flow field, Ph.D. thesis, 1995, Dalian University of Technology, China. (in Chinese)