Flow Past of a Drilling Riser System with Auxiliary Lines in Laminar Flow
DOI:
https://doi.org/10.37934/cfdl.15.2.101113Keywords:
VIV, drilling riser, laminar, auxiliary lines, CFDAbstract
Vortex-Induced Vibration (VIV) has emerged as a crucial problem that may arise during a drilling operation, which could result in riser failure. Engineers focus on drilling riser's flow characteristics and controls with the intention of improving the drilling environment. Auxiliary lines or control rods are usually placed around the main drilling riser to suppress the VIV. However, the issue related to the flow past drilling riser system with auxiliaries has yet to be resolved. The flow characteristics around a riser system with auxiliaries were analysed in this research. The simulations were conducted using Computational Fluid Dynamics (CFD) software, Altair AcuSolve. This work focuses on the influence of various gap ratios (G/D) and diameter ratios (d/D) on the vortex interaction. A main cylinder with six auxiliary lines was modelled with G/D of 0 to 2.0 and d/D of 0.10 to 0.60 to simulate the riser system. The simulations were carried out at Reynold Number of 200 in the laminar flow regime. The results revealed that the hydrodynamic forces decreased when d/D and G/D increased. The vortex shedding was significantly reduced for auxiliary lines with G/D between 0.3 and 1.4. The numerical simulation results indicated that the vortex interaction in the wake region was, and the hydrodynamic forces were reduced due to the auxiliary lines configurations. The findings of this study are intended to contribute a new CFD simulation result for a better prediction of VIV on a drilling riser with auxiliary lines.
References
Zhang, Wen-Shou, and Dong-Dong Li. "Active control of axial dynamic response of deepwater risers with Linear Quadratic Gaussian controllers." Ocean Engineering 109 (2015): 320-329. https://doi.org/10.1016/j.oceaneng.2015.09.018
Lee, Abe H., Robert L. Campbell, and Stephen A. Hambric. "Coupled delayed-detached-eddy simulation and structural vibration of a self-oscillating cylinder due to vortex-shedding." Journal of Fluids and Structures 48 (2014): 216-234. https://doi.org/10.1016/j.jfluidstructs.2014.02.019
Wu, Wenbo, Jiasong Wang, Shiquan Jiang, Liangbin Xu, and Leixiang Sheng. "Flow and flow control modeling for a drilling riser system with auxiliary lines." Ocean Engineering 123 (2016): 204-222. https://doi.org/10.1016/j.oceaneng.2016.06.043
Lou, Min, Wu-gang Wu, and Peng Chen. "Experimental study on vortex induced vibration of risers with fairing considering wake interference." International Journal of Naval Architecture and Ocean Engineering 9, no. 2 (2017): 127-134. https://doi.org/10.1016/j.ijnaoe.2016.08.006
Silva-Ortega, M., and G. R. S. Assi. "Flow-induced vibration of a circular cylinder surrounded by two, four and eight wake-control cylinders." Experimental Thermal and Fluid Science 85 (2017): 354-362. https://doi.org/10.1016/j.expthermflusci.2017.03.020
Strykowski, P. J., and K. R. Sreenivasan. "On the formation and suppression of vortex 'shedding'at low Reynolds numbers." Journal of Fluid Mechanics 218 (1990): 71-107. https://doi.org/10.1017/S0022112090000933
Kuo, C-H., L-C. Chiou, and C-C. Chen. "Wake flow pattern modified by small control cylinders at low Reynolds number." Journal of Fluids and Structures 23, no. 6 (2007): 938-956. https://doi.org/10.1016/j.jfluidstructs.2007.01.002
Bearman, P. W. "Circular cylinder wakes and vortex-induced vibrations." Journal of Fluids and Structures 27, no. 5-6 (2011): 648-658. https://doi.org/10.1016/j.jfluidstructs.2011.03.021
Rahman, Mohd Asamudin A., Wan Norazam Wan Hussin, Mohd Hairil Mohd, Fatimah Noor Harun, Lee Kee Quen, and Jeom Kee Paik. "Modified wake oscillator model for vortex-induced motion prediction of low aspect ratio structures." Ships and Offshore Structures 14, no. sup1 (2019): 335-343. https://doi.org/10.1080/17445302.2019.1593308
Gao, Guanghai, Xiao Cong, Yunjing Cui, and Xingqi Qiu. "Study on vortex-induced vibration of deep-water marine drilling risers in linearly sheared flows in consideration of changing added mass." Mathematical Problems in Engineering 2020 (2020). https://doi.org/10.1155/2020/7687280
Zhao, Ming, Liang Cheng, Bin Teng, and Dongfang Liang. "Numerical simulation of viscous flow past two circular cylinders of different diameters." Applied Ocean Research 27, no. 1 (2005): 39-55. https://doi.org/10.1016/j.apor.2004.10.002
Zhu, Hongjun, and Jie Yao. "Numerical evaluation of passive control of VIV by small control rods." Applied Ocean Research 51 (2015): 93-116. https://doi.org/10.1016/j.apor.2015.03.003
Lu, Lin, Ming-ming Liu, Bin Teng, Zhen-dong Cui, Guo-qiang Tang, Ming Zhao, and Liang Cheng. "Numerical investigation of fluid flow past circular cylinder with multiple control rods at low Reynolds number." Journal of Fluids and Structures 48 (2014): 235-259. https://doi.org/10.1016/j.jfluidstructs.2014.03.006
Alias, Fatin, Mohd Hairil Mohd, Mohd Azlan Musa, Erwan Hafizi Kasiman, and Mohd Asamudin A. Rahman. "Flow Past a Fixed and Freely Vibrating Drilling Riser System with Auxiliaries in Laminar Flow." Journal of Advanced Research in Fluid Mechanics and Thermal Sciences 87, no. 3 (2021): 94-104. https://doi.org/10.37934/arfmts.87.3.94104
Alias, Fatin, Mohd Hairil Mohd, and Mohd Asamudin A. Rahman. "The Influence of Incidence Angles on Flow Past a Fixed and Freely Vibrating Drilling Riser System in Laminar Flow." In The 31st International Ocean and Polar Engineering Conference. OnePetro, 2021.
Braza, M., P. H. H. M. Chassaing, and H. Ha Minh. "Numerical study and physical analysis of the pressure and velocity fields in the near wake of a circular cylinder." Journal of Fluid Mechanics 165 (1986): 79-130. https://doi.org/10.1017/S0022112086003014
Meneghini, Julio R., Fábio Saltara, Cesareo de La Rosa Siqueira, and J. A. Ferrari Jr. "Numerical simulation of flow interference between two circular cylinders in tandem and side-by-side arrangements." Journal of Fluids and Structures 15, no. 2 (2001): 327-350. https://doi.org/10.1006/jfls.2000.0343
Arkell, Richard Henry. "Wake dynamics of cylinders encountering free surface gravity waves." PhD diss., University of London, UK, 1995.
Silva-Ortega, M., and Gustavo Roque da Silva Assi. "Hydrodynamic loads on a circular cylinder surrounded by two, four and eight wake-control cylinders." Ocean Engineering 153 (2018): 345-352. https://doi.org/10.1016/j.oceaneng.2018.01.116
Song, Zhenhua, Menglan Duan, and Jijun Gu. "Numerical investigation on the suppression of VIV for a circular cylinder by three small control rods." Applied Ocean Research 64 (2017): 169-183. https://doi.org/10.1016/j.apor.2017.03.001
Wang, Jiasong, Hanxu Zheng, and Zhongxu Tian. "Numerical simulation with a TVD-FVM method for circular cylinder wake control by a fairing." Journal of Fluids and Structures 57 (2015): 15-31. https://doi.org/10.1016/j.jfluidstructs.2015.05.008
Zhu, Hongjun, and Yue Gao. "Effect of gap on the vortex-induced vibration suppression of a circular cylinder using two rotating rods." Ships and Offshore Structures 13, no. 2 (2018): 119-131. https://doi.org/10.1080/17445302.2017.1328756
Wang, Z. J., and Y. Zhou. "Vortex interactions in a two side-by-side cylinder near-wake." International Journal of Heat and Fluid Flow 26, no. 3 (2005): 362-377. https://doi.org/10.1016/j.ijheatfluidflow.2004.10.006
