# Simulations and Comparisons of D-Section Cylinder in The Different Re Flow

Simulations and Comparisons of D-Section Cylinder in The Different Re Flow

Ji LiShu Yan Yuhang Zhou Kexin Yang

Northeast Petroleum University,Petroleum Engineering Institute, Heilongjiang,163318 China

Earth Sciences Institute, Northeast Petroleum University, Daqing, Hei Longjiang, China

Working Group 1, The Downhole Service Sub-Company, Daqing Oilfield Co., Ltd, Daqing, Hei Longjiang, China

Corresponding Author Email:
lijiypgf@aliyun.com
Page:
23-28
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DOI:
http://dx.doi.org/10.18280/mmep.020405
N/A
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Accepted:
N/A
| | Citation

OPEN ACCESS

Abstract:

Positioning a splitter plate at the certain line in the wake of the cylinder is an effective method to reduce the acoustic drag force and lift force. The simulations of the flow past the only stationary D-section cylinder at different Reynolds number 400, 500, 600, 700, and 45000 are included here to have a study on the mechanisms of the D-section cylinder in the flow. Two-dimensional unsteady laminar flow over a semi-circular cylinder with a prescribed flexible foil was investigated numerically. The mechanisms of the single fixed D-section cylinder in the flow and the propelled foil will be studied and the interaction effect on both of cylinder and foil will be explored by setting the optimal parameters as different foil undulation frequency and gaps between them.

Keywords:

D-section cylinder, Unsteady laminar flow, Semi-circular cylinder, Computational modeling.

1. Computational Domain and Boundary Conditions
2. Grid Generation
3. Computational Settings
4. Fluid Flow Model
5. Flow Conditions
6. Solver Settings
7. Time Step
8. Results and Discussion
9. Conclusion
References

[1] C.J.Apelt, G.S.West, A.Szewczyk, “The effects of wake splitter plates on the flow past a circular cylinder in the range 104 < R < 5104,” J. Fluid Mech., 61 (1973), 187-198.

[2] Flanagan, P.J., “Unsteady navier-stokes simulation of rainbow trout swimming hydrodynamics,” A thesis submitted in partial fulfillment of the requirements for the degree of Master of Science in Civil Engineering, Washington State University, Department of Civil and Environmental Engineering, May 2004.

[3] G.S.Triantafyllou, M.S.Triantafyllou, and M.A.Grosenbauch, “Optimal thrust development in oscillating foils with application to fish propulsion,” J. Fluids Struct., vol.7, pp.205–224, 1993.

[4] Gerstner, C.L., “Use of substratum ripples for flow refuging by Atlantic cod, Gadus morhua,” Environ. Biol. Fishes, 51, 455–460, 1998.

[5] H.E. Fiedler, H.H. Fernholz, “On management and control of turbulent shear ows,” Prog. Aerospace Sci., 27 (1990) 305-387.

[6] James C. Liao, “A review of fish swimming mechanics and behaviour in altered flows,” Phil. Trans. R. Soc., B (2007) 362, 1973–1993, 2007.

[7] James C. Liao, “A review of fish swimming mechanics and behaviour in altered flows,” Phil. Trans. R. Soc., B (2007) 362, 1973–1993, 2007.

[8] Liao, J. C., Beal, D.N., Lauder, G.V. and Triantafyllou, M.S., “The Karman gait: novel body kinematics of rainbow trout swimming in a vortex street,” J. Exp. Biol., vol. 206, 2003b, pp. 1059–1073.

[9] Liao, J.C., “Swimming in needlefish (Belonidae): anguilliform locomotion with fins.” J. Exp. Biol., 205, 2875–2884, 2002.

[10] Webb, P.W., “Entrainment by river chub Nocomis micropogon and smallmouth bass Micropterus dolomieu on cylinders,” J. Exp. Biol., 201, 2403–2412, 1998.

[11] Zdravkovich, M.M., Flow around Circular Cylinders: A Comprehensive Guide through Flow Phenomena, Experiments, Applications, Mathematical Models, and Computer Simulations, Oxford, UK: Oxford Science Publications, Oxford University Press, 1997.