Numerical Investigation of the Effect of Bilge Keel Width on Roll Damping

In this study, the flow around a forced rolling two dimensional hull section with bilge keel at free surface is simulated by using RANS solver. Roll damping coefficients are calculated numerically for different bilge keel width and validated with experiments to show if RANS code can correctly predict the damping coefficients. The generated vortices around the hull and bilge keel are observed by using RANS solver to show the effect on roll damping.

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  • Avalos, G. O., Wanderley, J. B., Fernandes, A. C. ve Oliveira, A. C., (2014). "Roll Damping Decay of a FPSO With Bilge Keel”, Ocean Engineering, 87 (111). Bangun, E. P., Wang, C. M. ve Utsunomiya, T., (2010). "Hydrodynamic Forces on a Rolling Barge With Bilge Keels”, Appl. Ocean Res., 32: 219–232. Bassler, C. C., (2013). "Analysis and Modeling of Hydrodynamic Components for Ship Roll Motion in Heavy Weather”, PhD. Thesis, Virginia Polytechnic Institute and State University. Bonfiglo, L., Brizzolara, S. ve Chryssostomidis, C., (2011). "Added Mass and Damping of Oscillating Bodies a Fully Viscous Numerical Approach”, Recent Adv. Fluid Mech. Heat Mass Transf Biol., 210–215. Gao, Q. ve Vassalos, D., (2011). "Numerical Study of the Roll Decay of Intact and Damaged Ship”, Proceedings of the 12th International Ship Stability Workshop, 277–282. Handschel, S., Kollisch, N., Soproni, J. P. ve Abdel-Maksoud, M., (2012). "A Numerical Method for Estimation of Ship Roll Damping for Large Amplitudes”, 29th Symposium on Naval Hydrodynamics, Sweeden. Henning, H. L., (2011). "Investigation of the Heave, Sway and Roll Motions of Typical Ship Like Hull Sections Using Rans Numerical Methods”, Master Thesis, University of Stellenbosch. Ikeda, Y., Himeno, Y. ve Tanaka, N., (1978d). “Components of Roll Damping of Ship at Forward Speed”, Report of the Department of Naval Architecture, University of Osaka Prefecture, No. 00404. Irvine, M., (2004). "Towing Tank Tests for Surface Combatant for Coupled Pitch and Heave and Free Roll Decay Motions”, Doctorial Thesis, University of Iowa, The Graduate College of the University of Iowa. Jaouen, F., Koop, A. ve Vaz, G., (2011). "Predicting Roll Added Mass and Damping of a Ship Hull Section Using CFD”, Proceedings of ASME 30th International Conference on Ocean, Offshore and Arctic Engineering, Netherlands. Jiang, Y., (2014). "Computational Modeling in Three Dimensions of Multi-DOF Ship Motion in a Viscous Fluid”, PhD. Thesis, Engineering - Mechanical Engineering in the Graduate Division of the University of California, Berkeley. Korpus, R. A. ve Falzarano, J. M., (1997). “Prediction of Viscous Ship Roll Damping by Unsteady Navier-Stokes Techniques”, J. Offshore Mechanics and Arctic Engineering, 119: 108-113. Miller, R. W., Gorski, J. J. ve Fry, D., (2002). “Viscous Roll Predictions of a Circular Cylinder with Bilge Keels”, Proc. 24th Symp. on Naval Hydro., Fukuoka, Japan. Oliveira, A. C. ve Fernandes, A. C., (2006). "The Bilinear Behavior for FPSO Rolling Motions”, Proceedings of the 9th International Conference on Stability of Ships and Ocean Vehicles, Brazil. Oliveira, A. C. ve Fernandes, A. C., (2014). "The Nonlinear Roll Damping of a FPSO Hull", Journal of Offshore Mechanics and Arctic Engineering, 136(1), 011106. Paap, M., (2005). "Verification of CFD Calculations With Experiments on a Rolling Circular Cylinder With Bilge Keels in a Free Surface”, Master Thesis, Delft University of Technology and Bluewater Energy. Sadat-Hosseini, H., Stern, F., Olivieri, A., Campana, E. F., Hashimoto, H., Umeda, N., Bulian, G. ve Francescutto, A., (2010). "Head-Wave Parametric Rolling of a Surface Combatant”, Ocean Eng., 37: 859–878. Sarkar, T., ve Vassalos, D., (2001). "A RANS-Based Technique for Simulation of the Flow Near a Rolling Cylinder at the Free Surface”, Journal of Marine Science and Technology, 5 (2): 66-77. Wanderley, J. B. V. ve Levi, C. A., (2005). "Vortex Induced Loads on Marine Risers”, Ocean Engineering, 32, 1281-1295. Wilson, R., Carrica P. M. ve Stern, F., (2006). "Unsteady RANS Method for Ship Motions With Application to Roll for a Surface Combatant”, Comput. Fluids, 35: 501–524. Van Kampen, M. J., (2015). "Bilge Keel Roll Damping CFD and Local Velocities”, Master Thesis, Offshore and Dredging Engineering, The Delft University of Technology. Yago, K., Ohkawa, Y., Chuji, T. ve Utsunomiya, T., (2008). "Experimental Study on Viscous Damping Force of Box-Shaped Body With Fin”, J. Soc. Nav. Archit., Japan. Yang, B., Wang, Z. C. ve Wu, M., (2012). "Numerical Simulation Of Naval Ships Roll Damping Based On CFD”, Procedia Eng., 37: 14–18. Yeung, R. ve Ananthakrishnan, P., (1992). "Oscillation of a Floating Body in a Viscous Fluid”, J. Eng. Math., 26: 211–230. Yeung, R. W, Liao, S. W. ve Roddier, D., (1998). “Hydrodynamic Coefficients of Rolling Rectangular Cylinders”, Intl. J. Offshore and Polar Engineering, 8(4). Yıldız, B., Çakıcı, F., Katayama, T. ve Yılmaz, H., (2016). "URANS Prediction of Roll Damping for a Ship Hull Section at Shallow Draft”, Journal of Marine Science and Technology, 21 (1): 48-56. Yıldız, B. ve Katayama, T., (2017). "Bilge Keel-Free Surface Interaction and Vortex Shedding Effect on Roll Damping”, Journal of Marine Science and Technology, 22 (3): 432-446.