Abstract
We calculate the stern flow for the case of HSVA ship model at two different Reynolds number; one is Re=109 for full scale and the other is Re=5×106 for model scale. And we investigate the trend of scale effect on the stern flow by comparing the results of two calculations. The STERN/NS computer program, developed for solving the Navier-Stokes equations in a numerically generated general coordinate, is used with k−ɛ turbulence model for turbulent flows. At full scale, skin frictions are much reduced as expected from boundary layer concept, and the pressure in the thick boundary layer region around the stern and near wake is noticeably changed by decreasing of viscous-inviscid interaction in flow domain. At the propellar plane, full scale solutions show that the velocities in the shear layer increase and the wake region is substantially reduced by 20% compared with the model scale solutions.
Published Version
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