The Calculation of Trimaran Vessel Resistance and Uncertainty estimation in Calm water condition by Experimental and Numerical methods

Authors

1 Expert on Surface Vessel Design / Northwestern Institute of Science and Technology / Malek Ashtar University of Technology

2 Ma., Ocean. Eng., Hydrodynamic, Imam Hossein University, National Iranian Marine Laboratory, Iran

Abstract

Nowadays, the study of Trimaran vessels has increased due to its various properties. The Trimaran vessle or three hull is an example of a multi-hull vessle that has suitable hydrostatic and hydrodynamic properties. These vessels have a length-to-width and draught ratios; so they offer reduced wave-making resistance and power, respectively. In this study is presented the method and process of performing resistance test for a displacement trimaran vessel. Construction conditions were performed according to the ITTC recommendation. The vessel was tested at Froude numbers: 0.42, 0.23, 0.17 and three degrees of freedom: surge, heave, pitch and calm water conditions. Then, the results were compared by computational fluid dynamics method. Verification and Validation were performed according to the ITTC recommendation by three levels of gridding and the amount of numerical uncertainty was estimated. In order to model the flow around the hull, the two-phase VOF model and K-E turbulence model were used. Good agreement was obtained between numerical and experimental results.

Keywords

References

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Journal of Solid and Fluid Mechanics
Volume 11, Issue 6
January and February 2022
Pages 253-271

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