Numerical simulation of the flow about self-propelling tanker models |
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Authors: | Takafumi Kawamura Hideaki Miyata Kohji Mashimo |
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Institution: | (1) International Research Centre for Computational Hydrodynamics, Horsholm, Denmark;(2) Department of Naval Architecture and Ocean Engineering, Faculty of Engineering, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, 170 Tokyo, Japan |
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Abstract: | A time-marching CFD simulation is performed for self-propelling ships. The flow about the hull is simulated by the finite-volume
method, and the propeller action is approximated as a propeller disk for which the solution is given by a simplified propeller
model. The interaction of two flow models is treated in a time-marching procedure converging towards the steady self-propelling
condition. This method is applied to five tanker models, and detailed comparisons are made between the simulated results and
corresponding experimental results. It is shown that the flow field in the self-propelling condition is qualitatively well
reproduced in the simulation, and the estimated thrust deduction factors for the five hull forms agree well with measured
ones. However, the effective wake factors are underestimated, since the Reynolds number in the simulations differs from that
in the experiment. |
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Keywords: | hull-propeller interaction finite-volume method |
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