Author(s)

G.D. Tzabiras

Abstract

A viscous flow solver is applied to calculate the speed of a tanker moving at low Froude number with pre-determined engine SHP and RPM. Self-propulsion numerical tests are performed using the body force approximation to model the propeller action. The computed thrust and effective wake fraction are combined with open water charts from a systematic propeller series and an iterative method is followed to estimate the final speed. 1 Introduction The need to estimate a ship's speed with known engine characteristics, i.e. horsepower (SHP) and revolutions per minute (RPM), is a problem usually encountered in marine hydrodynamics. A typical example is to calculate the effect of changing the geometry of a particular ship in orde

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