engleski

Validation of the CFD procedure for ROPAX resistance assessment

In the preliminary stage of ship design is very important to determine the resistance force of a ship. This study presents the results of a RoPax resistance predictions obtained from towing tank experiments, which are compared with a numerical prediction u sing Computational Fluid Dynamics (CFD). Numerical prediction of the ship resistance is done by Finite - Volume Method (FVM) solver. The solver is based on Reynolds - Averaged Navier - Stokes (RANS) equations and the Volume of Fluid (VOF) scheme for the free sur face capturing. Ship resistance was calculated for a various ship speeds to obtain resistance curve. Since the mesh density affects the results in any CFD simulation, multiple meshes were used to check the results of resistance force. The validation and un certainty due to discretization in the application of the CFD solver is analysed by comparing the numerically obtained results of the resistance force to the experimental data. In was concluded that used CFD solvers are capable to deliver results very clos e to experiments using relatively small computing power.

ship design, RoPax, resistance, CFD

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