RANS-VOF solver for solitary wave run-up on a circular cylinder
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Simulation of solitary wave run-up on a vertical circular cylinder is carried out in a viscous numerical wave tank developed based on the open source codes OpenFOAM. An incompressible two-phase flow solver naoe-FOAM-SJTU is used to solve the Reynolds-Averaged Navier-Stokes (RANS) equations with the SST k-ω turbulence model. The PISO algorithm is utilized for the pressure-velocity coupling. The air-water interface is captured via Volume of Fluid (VOF) technique. The present numerical model is validated by simulating the solitary wave run-up and reflected against a vertical wall, and solitary wave run-up on a vertical circular cylinder. Comparisons between numerical results and available experimental data show satisfactory agreement. Furthermore, simulations are carried out to study the solitary wave run-up on the cylinder with different incident wave height H and different cylinder radius a. The relationships of the wave run-up height with the incident wave height H, cylinder radius a are analyzed. The evolutions of the scattering free surface and vortex shedding are also presented to give a better understanding of the process of nonlinear wave-cylinder interaction.
Key wordsRANS VOF solitary wave circular cylinder numerical wave tank naoe-FOAM-SJTU solver
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- Cao, H. J., Zha, J. J. and Wan, D. C., 2011a. Numerical simulation of wave run-up around a vertical cylinder, Proc. 21st Int. Offshore Polar Eng. Conf. (ISOPE), Maui, Hawaii, USA, 726–733.Google Scholar
- Cao, H. J. and Wan, D. C., 2012. Numerical investigation of extreme wave effects on cylindrical offshore structures, Proc. 22nd Int. Offshore Polar Eng. Conf. (ISOPE), Rhodes, Greece, 804–811.Google Scholar
- Cao, H. J., Liu, Y. C., Wan, D. C. and Yang, C., 2011b. Numerical simulation of extreme wave impact on fixed offshore platform, Proc. 7th Int. Workshop Ship Hydrodynamics (IWSH), Shanghai, China, 138–143.Google Scholar
- Dean, R. G. and Dalrymple, R. A., 1991. Water Wave Mechanics for Scientists and Engineers — Advanced Series on Ocean Engineering, Vol. 2, World Scientific.Google Scholar
- Hunt, J. C. R., Wray, A. A. and Moin, P., 1988. Eddies, stream, and convergence zones in turbulent flows, Stanford N.A.S.A, Center for Turbulence Research, CTR-S88.Google Scholar
- Ohyama, T., 1990. A numerical method of solitary wave forces acting on a large vertical cylinder, Proc. 22nd Conf. Coast. Eng., Delft, The Netherlands, 1, 840–852.Google Scholar
- Rusche, H., 2003. Computional Fluid Dynamics of Dispersed Two-phase Flows at High Phase Fractions, London, Imperial College of Science, Technology and Medicine.Google Scholar
- Shen, Z. R., Cao, H. J., Ye, H. X. and Wan, D. C., 2012. Manual of CFD Solver naoe-FOAM-SJTU, Shanghai, Shanghai Jiao Tong University. (in Chinese)Google Scholar
- Yates, G. T. and Wang, K. H., 1994. Solitary wave scattering by a vertical cylinder: experimental study, Proc. 4th Int. Offshore Polar Eng. Conf. (ISOPE), Osaka, Japan, 118–124.Google Scholar
- Zha, J. J. and Wan, D. C., 2011. Numerical wave generation and absorption based on OpenFOAM, The Ocean Engineering, 29(3): 1–12. (in Chinese)Google Scholar