Numerical simulation of the ship self-propulsion prediction using body force method and fully discretized propeller model

6th ModTech International Conference - Modern Technologies in Industrial Engineering

Bekhit, A.S.^1

Dunarea de Jos University of Galati, Faculty of Naval Architecture, 47 Domneasca Street, Galati

800008, Romania^1

关键词: Body force method;    Commercial software;    Energy-saving devices;    Global approaches;    Model-based OPC;    Numerical solution;    Reynolds Averaged Navier-Stokes Equations;    Spatial discretizations;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/400/4/042004/pdf
DOI  :  10.1088/1757-899X/400/4/042004

来源: IOP

【 摘 要 】

The study proposes a numerical solution for the self-propulsion prediction of the Japan Bulk Carrier (JBC) ship model based on two different approaches: the first is the body force method using an infinite-blade actuator disk, while the second is based on a 3-D fully discretized propeller using the sliding grid technique. The computations are performed for the ship with and without Energy Saving Device (ESD) by making use of the ISIS-CFD solver which is available in the commercial software Fine™/Marine provided by NUMECA. The solver is based on finite volume method to build the spatial discretization to solve the Reynolds-Averaged Navier-Stokes equation (RANSE) in a global approach. Closure to turbulence is made by making use of k-ω SST model for the actuator disk case and EASM for the propeller model case. A comprehensive investigation is brought into attention for the nominal wake and the effective wake flow, for clarifying and understanding the hull-propeller interaction. The computed results are compared to the experimental results presented in the Tokyo Workshop on the Naval Hydrodynamics 2015 and showed a reasonable agreement.