Parameter Optimization on Experiment and Numerical Simulation of a SWATH

• Main Authors: Chi-Ming Yang, 楊啟銘
• Other Authors: Sheng-Ju Wu
• Format: Others
• Language: zh-TW
• Published: 2009
• Online Access: http://ndltd.ncl.edu.tw/handle/17409340745663417968

碩士 === 國防大學理工學院 === 造船及海洋工程碩士班 === 97 === This work is mainly to study a Small Waterplane Area Twin Hull (SWATH) by the proportion of shrinking by ten. Parameter design of the model has been carried out through experiments in a horizontal circulating water channel. By changing the parameter levels of the interval between two submerged body and the drafts of ship model, the data of drag were measured under the circumstances that the experiment level of planning was made up about the model of a SWATH. Using the Taguchi's experiment design that includes carrying out a dynamic robust design and finding out an optimal condition. Finally, a "Response Surface Model" can be obtained via regression analysis, and then the response of drag of ship model is predicted among all kinds of factor levels, the obtained result and the experimental design analysis result is the same. In addition, in the numerical simulation the work tried to use some application software, such as SOLIDWORKS, FLUENT, TECPLOT and so forth, so as to establish a numerical water channel that conditionsin conformity with the actual circulating water channel. Therefore, the effect of free surface on the twin-submerged body was solved and understood. The experimental result that has been obtained from testing ship model will be verified with the calculation of numerical simulation. The impact on drag and a complex flow field produced by various combinations resulted from different factor level of a SWATH can be studied. This research analyzes the result as well as the analysis method, might supply the hull design and the oceanography in future and so on of reference the related research demand.