Abstract
With the increase of petroleum and gas production in deep ocean, marine risers of circular cylinder shape are widely used in the offshore oil and gas platform. In order to research the hydrodynamic performance of marine risers, the dynamic mesh technique and User-Defined Function (UDF) are used to simulate the circular cylinder motion. The motion of a transversely oscillating circular cylinder in combination of uniform flow and oscillating flow is simulated. The uniform flow and oscillating flow both are in x direction. SIMPLE algorithm is used to solve the Navier-Stokes equations. The User-Defined Function is used to control the cylinder transverse vibration and the inlet flow. The lift and drag coefficient changing with time and the map of vorticity isolines at different phase angle are obtained. Force time histories are shown for uniform flow at Reynolds number (Re) of 200 and for the combination of uniform and oscillating flows. With the increase of amplitude of oscillating flow in combined flow, the change of lift amplitude is not sensitive to the the change of cylinder oscillating frequency. Lift amplitude increases with the increase of oscillating flow amplitude in the combined flow, but there is no definite periodicity of the lift coefficient. The drag and inertia force coefficients change when the maximum velocity of the oscillating flow increases in the combined flow. The vortex shedding near the circular cylinder shows different characteristics.
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References
Anagnostopoulos, P., and Bearaman, P. W., 1992. Response characteristics of a vortex-excited cylinder at low Reynolds number. Journal of Fluids and Structures, 7: 39–50.
Braza, M., Chassaing, P., and Haminh, H., 1986. Numerical study and physical analysis of the pressure and velocity fields in the near wake of a circular cylinder. Journal of Fluid Mechanics, 165: 79–130.
Carmo, B. S., Sherwin, S. J., Bearman, P. W., and Willden, R. H. J., 2011. Flow-induced vibration of a circular cylinder subjected to wake interference at low Reynolds number. Journal of Fluids and Structures, 27(4): 503–522, DOI: 10.1016/j.jfluidstructs.2011.04.003.
Dong, J., Zong, Z., Li, Z. R., Sun, L., and Chen, W., 2012. Numerical simulation of flow around a cylinder of two degrees of freedom motion using the discrete vortex method. Journal of Ship Mechanics, 16(1–2): 9–20.
Dutsch, H., Durst, F., Becker, S., and Lienhart, H., 1998. Low-Reynolds-number flow around an oscillating circular cylinder at low Keulegan-Carpenter numbers. Journal of Fluid Mechanics, 360: 249–271.
Fan, J. J., Tang, Y. G., Zhang, R. Y., and Shao, W. D., 2012. Numerical simulation of viscous flow around circular cylinder at high Reynolds numbers and forced oscillating at large ratio of amplitude. Chinese Journal of Hydrodynamics, 27(1): 24–32, DOI: 10.3969/j.issn1000-4874.2012.01.004.
Gu, W., Chyu, C., and Rockwell, D., 1994. Timing of vortex formation from an oscillating. Physics of Fluids, 6: 3677–3682, DOI: 10.1063/1.868424.
Liang, L. W., and Wan, D. C., 2009a. Numerical analysis of vortex induced motion of a 2D circular cylinder in cross-flow with low Reynold numbers. Sciencepaper Online, 2: 1754–1764.
Liang, L. W., and Wan, D. C., 2009b. Numerical investigation of a forced oscillating cylinder in a cross flows with low Reynolds number. The Ocean Engineering, 27(4): 45–53.
Lu, X. Y., and Dalton, C., 1996. Calculation of the timing of vortex formation from an oscillating cylinder. Journal of Fluids and Structures, 10: 527–541.
Mendes, P. A., and Branco, F. A., 1999. Analysis of fluid-structure interaction by an Arbitrary Lagrangian-Eulerian finite element formulation. International Journal for Numerical Methods in Fluids, 30: 897–919.
Meneghini, J. R., and Bearman, P. W., 1995. Numerical simulation of high amplitude oscillatory flow about a circular cylinder. Journal of Fluids and Structures, 9: 435–455.
Raghavan, K., and Bernitsas, M. M., 2011. Experimental investigation of Reynolds number effect on vortex induced vibration of rigid circular cylinder on elastic supports. Ocean Engineering, 38(5): 719–731, DOI: 10.1016/j.oceaneng.2010.09. 003.
Singha, S., and Sinhamahapatra, K. P., 2010. Flow past a circular cylinder between parallel walls at low Reynolds numbers. Ocean Engineering, 37(8): 757–769, DOI: 10.1016/j.oceaneng.2010.02.012.
Wan, D. C., and Turek, S., 2007. Fictitious boundary and moving mesh methods for the numerical simulation of rigid particulate flows. Journal of Computational Physics, 222(1): 28–56, DOI:10.1016/j.jcp.2006.06.002.
Wang, Z. D., and Zhou, L. H., 2005. Numerical simulation of circular cylinder oscillating transversely in a uniform stream. Journal of Hydrodynamics, 20: 146–151.
Williamson, C. H. K., and Roshko, A., 1988. Vortex formation in the wake of an oscillating cylinder. Journal of Fluids and Structures, 2: 355–381.
Zhao, L., and Chen, B., 2006. Two-dimensional FEM model of vortex-induced vibration of a circular cylinder. Ocean Technology, 25: 117–121.
Zhao, M., Cheng, L., and An, H. W., 2010. Three-dimensional numerical simulation of flow around a circular cylinder under combined steady and oscillatory flow. Journal of Hydrodynamics, 22(5): 144–149, DOI: 10.1016/S1001-6058(09)60184-0.
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Deng, Y., Huang, W. & Zhao, J. Combined action of uniform flow and oscillating flow around marine riser at low Keulegan-Carpenter number. J. Ocean Univ. China 13, 390–396 (2014). https://doi.org/10.1007/s11802-014-2263-8
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DOI: https://doi.org/10.1007/s11802-014-2263-8