Author(s)

J. Kulczyk, P. Zajac

Abstract

The paper presents results of an analysis of how the stern tunnel height affects the propulsive efficiency of an inland vessel. The study is concerned with a typical configuration of one pusher plus two dumb barges. For each tunnel form and predefined design requirements an optimal propeller type was selected. A mathematical model was used to account for hydrody- namic interactions within the propulsive system. The model is capable of determining service parameters of the propeller with account of the hull and the waterway bed interactions. In par- ticular, the effect of the waterway depth on the propulsive efficiency was determined. 1 Introduction Stern tunnels are commonly used in inland vessels. The tunne

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