• 作者： 方銘川; 徐維君
• 作者服務機構： 成功大學造船工程研究所
• 中文摘要： 本文作者在過去幾年來已發展了一套截面理論，來預測小水面雙體船在波浪中之運動。但仍有多項不完善之處。在本文中提出一改良方法來預估小水面雙體船之運動及雙船殼之流體動壓力分佈。後者對於此類船型之結構分析有其重要性。文中一併也提供了船邊動態水位之資訊。在本文中所考慮之勢流涵蓋了入射波、繞射波及幅射波等勢流之合成，以及複雜的干擾影響。非線性之黏性力及縱移力也在文中加以考慮。經過此一周詳之改良計算，所得之結果確實改善許多，而且比國外所發展之方法為佳，因此本文所發展之改良方法，對於小水面雙體船之流體結構設計將可提供一套有效之分析工具。
• 英文摘要： In a previous study, the author finished a strip theory for predicting the motion of a SWATH shipmoving freely in waves. The present paper offers an improved method for evaluating the motion responseand hydrodynamic pressure distribution on the hull surface of a SWATH ship that undergoes uniformtranslation and oscillatory motions in waves. The hydrodynamic pressure distribution is importantinformation as the basic input necessary for the element structural analysis for a SWATH ship design.An improved stripwise computation technique is developed to examine the resultant hydrodynamic pressureinduced on the freely running SWATH ship at constant speed in waves. The corresponding informationabout the dynamic swell-up of the wave surface is also given The total potentials include the effectsof incident, diffraction and radiation ones and the complicate hydrodynamic interactions are also carefullytreated. The effects of the surge force and viscous damping force are also included in the calculation.The results obtained here are physically reasonable; therefore, the present technique may be considereda useful tool for both fluid and structural analysis in the SWATH ship design stage.
• 中文關鍵字： hydrodynamic pressure; SWATH; motion response
• 英文關鍵字： --