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Numerical Simulation of Hydrodynamic Performance of Multi-Hull Catamaran With 3DOF Motion

[+] Author Affiliations
Rijie Li

China Ship Development and Design Center, Wuhan, China

Liwei Liu, Lixiang Guo, Dakui Feng, Xianzhou Wang

Huazhong University of Science and Technology, Wuhan, China

Paper No. OMAE2018-77241, pp. V002T08A036; 6 pages
doi:10.1115/OMAE2018-77241
From:
  • ASME 2018 37th International Conference on Ocean, Offshore and Arctic Engineering
  • Volume 2: CFD and FSI
  • Madrid, Spain, June 17–22, 2018
  • Conference Sponsors: Ocean, Offshore and Arctic Engineering Division
  • ISBN: 978-0-7918-5121-0
  • Copyright © 2018 by ASME

abstract

This paper presents CFD to study the hydrodynamic performance for the high-speed, multi-hull Catamaran advancing in calm water. It uses inhouse computational fluid dynamics (CFD) code to solve RANS equation coupled with six degrees of freedom solid body motion equations. RANS equations are solved by finite difference method and PISO arithmetic. Computations have been made using structured grid with overset technology. Turbulence models used the anisotropic two equations Shear Stress Transport (SST) k-ω model. Single phase level set was used for free surface simulation. A good agreement on the resistance prediction between CFD and experimental fluid dynamics (EFD) has been observed (on the resistance prediction of about 4.0%). Differences between CFD and EFD have been seen for the 3 degrees of freedom (3DOF) motion, whereas larger discrepancy is observed for the sinkage and trim estimation (about 8.0%).

Copyright © 2018 by ASME

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