Propeller nozzle for ships
Ø 4000MM
Van Voorden Gieterij
The Superior® nozzle is extremely suitable in the following sectors:
* inland shipping
* fishery
* tug and push boats
A nozzle produces the greatest gain in thrust at relatively low speeds.
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The Superior® nozzle is characterised by its slender, cambered profile that makes no concessions to the system diameter (outside diameter nozzle). Advanced CFD-analyses (Computational Fluid Dynamics) of tens of profiles showed that a more slender profile with more curvature clearly improved the nozzle. Furthermore, calculations also showed that a larger discharge diameter would also improve efficiency.
The nozzle derives its high efficiency from an improved version of the existing nozzle, a circular wing around the propeller. The section profile of this wing generates a higher speed on the inside than on the outside of the nozzle and achieves its thrust through the pressure difference that this creates. Efficiency improvements in nozzle technology have up to now mainly been sought in increasing the system diameter with all the disadvantages that this entails, such as a correspondingly larger installation size.
