超细长三体船阻力计算研究

主船体为超细长体,两侧配置两个小侧体而形成的三体船是一种很有潜力的新船型,近年来已引起了广泛的关注。本文对三体船的阻力原理进行了分析,以“相当平板”假设为基础计算摩擦阻力,采用“1＋k”的方法计算形状阻力;采用线性兴波阻力理论建立三体船的兴波阻力计算方法,提出了一套计算三体船阻力的完整方法。经与船模试验结果比较,采用本方法预报三体船的阻力,Cw的计算结果可以定性地反映侧体布置位置对三体船兴波阻力的影响,计算结果比较接近实际情况,具有一定的可靠性,可用于该船型的阻力预报。

Resistance Analysis and Calculation of Trimaran with Super-slender Hulls

Trimaran, which has a super slender main hull and two small hulls disposed symmetrically on its sides, is a new type ship with great potentialities and has drawn much attention for the recent years. This paper presents the research effort on resistance characteristics and calculation of trimaran. By use of linear theory, a method for calculation of wave making drag of trimaran is established, and with ship shape factor"1+ k ", shape resistance of trimaran is calculated. Based on the above, a complete resistance calculation method for trimaran is put forward. The calculation results are close to that of towing tank experiment and reflect qualitatively the effect of side hull disposition on wave making drag of trimaran. This research achievement can be used to predict trimaran's resistance and is helpful for developing ships of this kind.