摘要
针对线性兴波阻力帐篷函数法阻力计算及相应的船型优化方法不能反映实际船体对称面形状这一局限,提出一种定义在实际船体对称面上的船体曲面近似函数,将该船体曲面近似函数代入线性兴波阻力表达式,用该表达式与原帐篷函数法计算同一船型的兴波阻力系数,对比结果表明在多数速度区间内比后者更加接近试验结果.由此表达式建立以船体型值为变量的最小兴波阻力二次规划数学模型,此模型适用于任意给定的由曲线、折线围成的非矩形船体对称面区域,尤其适用于舰船前体及其球鼻首的优化.基于二次规划优化模型对仿DDG51船型进行一系列型线优化设计,在理论上获得了20%以上的兴波阻力减阻效果.
Tent function method of linear wave resistance theory was devised for rectangular centerplane area, while practical centerplane areas are almost all unrectangular. A new hull approximation function applied to such centerplane areas was derived. Then the linear wave resistance formula was introduced. The wave resistance was given in a quadratic form in terms of the hull offsets so that optimization method can be used to seek hull forms with minimum wave resistance. The obtained optimization model was especially applicable to the forebody and bulb bow form optimization. The original tent function method and the new method were both used to predict the wave resistance of DTMB5415-like hull form, and the results of the latter were closer to the resistance towing test results. A set of optimization calculations were performed for DTMB5415-like hull form, and the calculated value of the wave resistance were decreased by at least 20%.
出处
《华中科技大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2011年第4期101-105,共5页
Journal of Huazhong University of Science and Technology(Natural Science Edition)
基金
国防预研项目
关键词
船舶阻力
兴波阻力
船型优化
数学规划化
二次规划
帐篷函数
ship resistance
wave resistance
ship form optimization
mathematical programming
quadratic programming
tent function
