Abstract
This paper describes the calculation of viscous flow around the tanker (Ryuko-maru) under the double model flow assumption at model scale and full scale Reynolds Numbers, in both towing and self-propulsion conditions. The CFD method used here has been originally developed by Kodama and Hinatu. As a result, difference of wake distribution between model and full scale ships is predicted well. The form factor and the thrust deduction predicted by CFD method are not depend on the Reynolds number, but effective wake fraction decreases with increase of Reynolds number. Scale effect predicted by CFD described above is basically agree with the knowledge that is used in the stage of prediction of full scale ship performance from tank test results.
