A modern vortex-lattice lifting-surface propeller blade design (PBD) code is coupled with a multi-element streamline curvature throughflow solver to efficiently analyze a marine propulsor in the presence of a rotational inflow. In this loosely coupled technique, the propeller design program predicts propeller blade forces based on an assumed inflow velocity field. These forces are then input into the streamline curvature program which computes a new total inflow velocity field. The updated effective inflow velocity field is returned to the propeller design program, and new blade forces are computed. Convergence is achieved usually after five or six looselly coupled iterations. The original researchers who developed this loosely coupled propeller design methodology relied upon Reynold's-Averaged Navier-Stokes (RANS) throughflow solvers to compute the throughflow solution. The use of a streamline curvature code results in an order-of-magnitude reduction in the computional time required by the flow solver, and allows nearer real-time design and analysis. Preliminary validation ressults show good agreement with both emprical and numerical tests.


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    Title :

    An improved analysis methodology for the prediction of steady propulsor performance


    Additional title:

    Eine verbesserte Analysemethodik für die Vorhersage der Dauerleistung eines Schiffsvortriebsmittels


    Contributors:

    Published in:

    Publication date :

    2001


    Size :

    7 Seiten, 9 Bilder, 14 Quellen



    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English





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