This study aims to propose a fast calculation method to evaluate the total resistance of a traditional ship hull form. It became a common knowledge nowadays that the computational fluid dynamics (CFD) approach is robust in calculating the frictional resistance component of a ship with double body flow solutions. Modeling of the free surface is still a problematic issue due to the mathematical background of the Volume of Fluid (VOF) approach and even if a good match is obtained with experiments, these multiphase computations consume a lot of time and need higher computational power. To circumvent this problem, this study proposes a hybrid CFD-empirical approach. The results of the single phase computations obtained by CFD is coupled with the empirical approach of Holtrop-Mennen. The frictional and viscous pressure resistances of a benchmark ship (Duisburg Test Case – DTC) were calculated by CFD and using the wave resistance values of the Holtrop-Mennen resistance calculation method, the total resistance was obtained. To assess double body solutions dominated by viscosity, two different turbulence models were evaluated in the process. It was found out that k-omega turbulence model generated slightly better results compared to the k-epsilon according to the reference experiments.

• El Moctar, O., Shigunov, V., Zorn, T., (2012). Duisburg Test Case: Post-Panamax container ship for benchmarking. Ship Technology Research, 59, pp. 50-64.
• Garcia-Gomez, A., (2000). On the form factor scale effect. Ocean Engineering, 27(1), pp. 97-109.
• Holtrop, J. Mennen, G. G., (1982). An approximate power prediction method. International Shipbuilding Progress, 29, pp. 166-170.
• Hughes, G. (1954). Friction and form resistance in turbulent flow and a proposed formulation for use in model and ship correlation. Transactions of RINA, 96.
• International Towing Tank Conference (ITTC), (2011b). 7.5-03-02-03. Practical guidelines for ship CFD applications. In: Proceedings of the 26th ITTC.
• Kinaci, O. K., Kukner, A., Bal, S., (2013). On propeller performance of DTC Post Panamax Container Ship. International Journal of Ocean System Engineering, 3(2), pp. 77-89.
• Molland, A. (ed.), (2008). The maritime engineering reference book – a guide to ship design, construction and operation. Elsevier Ltd.
• Schlichting, H., (1968). Boundary layer theory, Mc-Graw Hill, New York.
• Sukas, O.F., Kinaci, O.K., Bal, S., (2016). Prediction of wave resistance by a Reynolds-averaged Navier Stokes equation-based computational fluid dynamics approach. Proceedings of the Institution of Mechanical Engineers – Part M: Journal of Engineering for the Maritime Environment, 230(3), pp. 531-548.