| Summary: | 碩士 === 國防大學理工學院 === 造船及海洋工程碩士班 === 101 === This study attempts to carry out the design of the propeller by the program OpenProp developed by MIT. The program will generate the shape of propeller blades fast by inputting propeller parameters. The work first employed Yates method of the design of experiments to screen important parameters that include blade chord ratio, hub diameter, and propeller diameter. Then an orthogonal array of Taguchi method was planned to result in a signal to noise ratio (S/N) and the analysis of variance (ANOVA) was conducted, which showed the optimum combination of the factor and level. Next, the work tried to consider two factors, the ratio of rake to diameter and the skew, conducting a numerical simulation with the finite volume method and the sliding mesh for the simulation and computation of flow field. The most important performance of highly skewed propeller for the submarine is noiseless. For this problem, the cavitation number of propeller is the quality characteristics to evaluate the performance of this study. Then, this research carried out the intelligent parameter design building the network model of cavitation to find the global best value by using a genetic algorithm (GA). Finally, the numerical method was employed to compute the propeller performance based on the best conditions obtained by RBFN-GA to validate the accuracy of this model.
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