Computational Fluid Dynamic Analysis of Energy Saving Device of a Bulk Carrier
DOI:
https://doi.org/10.38032/scse.2025.3.22Keywords:
CFD, JBC, ESD, Resistance, OpenFOAMAbstract
With the increasing concern of the International Maritime Organization (IMO) regarding greenhouse gas emissions, the marine industry is now looking to improve ship performance by introducing various energy-saving technologies. In the present study, Computational Fluid Dynamics analysis is conducted on the test case of the JBC (Japan Bulk Carrier) model introduced in the Tokyo Workshop 2015 on ship hydrodynamics. The test case is available in a model scale of 1:40. Two variants of the model, with and without an Energy Saving Device (ESD) known as a wake-equalizing duct, are studied at Froude number 0.142 towed in calm water. An open-source RaNS-based CFD solver, OpenFOAM 11, is used for all numerical simulations. The results are validated against experimental data provided by the NMRI (National Maritime Research Institute). The numerical results show a close approximation to the experimental results. A systematic verification study is also performed based on grid size to assess numerical uncertainty. The effect of the wake equalizing duct is to reduce the total resistance by 0.5202% which is good enough for bulk carrier ships
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Copyright (c) 2025 Sayed Sadik Siddique, Md. Mashiur Rahaman (Author)
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