Abstract
A numerical method to estimate propeller open-water characteristics based on Quasi-Continuous Method (QCM) is presented. QCM was originally developed by Lan for solving planar thin wing problems. QCM has both advantages of continuous loading method and discrete loading method; loading distribution is assumed to be continuous in chordwise direction and stepwise constant in spanwise direction. Simplicity and flexibility of discrete loading method are also retained.In the present paper, explanations are made first on the essential features of QCM for planar wings and then its application to marine propellers is described in detail. Some numerical results on the propeller open-water characteristics for conventional and skewed propellers showed good agreement with those of experiments.
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