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## An Adjoint Numerical / Empirical Approach to Predict the Total Resistance of Ships

#### Hulya SUKAS [1] , Muhittin KANTAROGLU [2] , Omer Kemal KİNACİ [3]

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.

ship resistance, CFD, Hughes approach, Holtrop-Mennen
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• 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.
Bölüm Sayı Yazar: Hulya SUKAS Yazar: Muhittin KANTAROGLU Yazar: Omer Kemal KİNACİ Yayımlanma Tarihi : 11 Temmuz 2017
 Bibtex @araştırma makalesi { gdt332178, journal = {Gemi ve Deniz Teknolojisi}, issn = {1300-1973}, eissn = {2651-530X}, address = {}, publisher = {TMMOB Gemi Mühendisleri Odası}, year = {2017}, volume = {}, pages = {31 - 44}, doi = {}, title = {An Adjoint Numerical / Empirical Approach to Predict the Total Resistance of Ships}, key = {cite}, author = {Sukas, Hulya and Kantaroglu, Muhittin and Kinaci, Omer Kemal} } APA Sukas, H , Kantaroglu, M , Kinaci, O . (2017). An Adjoint Numerical / Empirical Approach to Predict the Total Resistance of Ships . Gemi ve Deniz Teknolojisi , (208) , 31-44 . Retrieved from https://dergipark.org.tr/tr/pub/gdt/issue/30734/332178 MLA Sukas, H , Kantaroglu, M , Kinaci, O . "An Adjoint Numerical / Empirical Approach to Predict the Total Resistance of Ships" . Gemi ve Deniz Teknolojisi (2017 ): 31-44 Chicago Sukas, H , Kantaroglu, M , Kinaci, O . "An Adjoint Numerical / Empirical Approach to Predict the Total Resistance of Ships". Gemi ve Deniz Teknolojisi (2017 ): 31-44 RIS TY - JOUR T1 - An Adjoint Numerical / Empirical Approach to Predict the Total Resistance of Ships AU - Hulya Sukas , Muhittin Kantaroglu , Omer Kemal Kinaci Y1 - 2017 PY - 2017 N1 - DO - T2 - Gemi ve Deniz Teknolojisi JF - Journal JO - JOR SP - 31 EP - 44 VL - IS - 208 SN - 1300-1973-2651-530X M3 - UR - Y2 - 2021 ER - EndNote %0 Gemi ve Deniz Teknolojisi An Adjoint Numerical / Empirical Approach to Predict the Total Resistance of Ships %A Hulya Sukas , Muhittin Kantaroglu , Omer Kemal Kinaci %T An Adjoint Numerical / Empirical Approach to Predict the Total Resistance of Ships %D 2017 %J Gemi ve Deniz Teknolojisi %P 1300-1973-2651-530X %V %N 208 %R %U ISNAD Sukas, Hulya , Kantaroglu, Muhittin , Kinaci, Omer Kemal . "An Adjoint Numerical / Empirical Approach to Predict the Total Resistance of Ships". Gemi ve Deniz Teknolojisi / 208 (Temmuz 2017): 31-44 . AMA Sukas H , Kantaroglu M , Kinaci O . An Adjoint Numerical / Empirical Approach to Predict the Total Resistance of Ships. Gemi ve Deniz Teknolojisi. 2017; (208): 31-44. Vancouver Sukas H , Kantaroglu M , Kinaci O . An Adjoint Numerical / Empirical Approach to Predict the Total Resistance of Ships. Gemi ve Deniz Teknolojisi. 2017; (208): 31-44. IEEE H. Sukas , M. Kantaroglu ve O. Kinaci , "An Adjoint Numerical / Empirical Approach to Predict the Total Resistance of Ships", Gemi ve Deniz Teknolojisi, sayı. 208, ss. 31-44, Tem. 2017

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