摘要
为获得低阻、高效的优良船型,以势流兴波阻力理论Rankine源法为基础,结合非线性规划法,提出以全船线型为设计对象,以降低兴波阻力为主要目标,同时考虑尾部黏性分离影响的最小总阻力船型优化设计方法.该方法利用简易二维湍流分离判断式求各流线上的分离点,近似求出分离域;然后根据分离域数值,判断黏性阻力,得到最小阻力船型.S60船型为母型的算例表明,运用该方法可获得在船体线型微小变化下总阻力有所改善的船型;设计思想可为研究船尾、乃至全船的线型优化提供理论基础和技术支持.
In order to obtain the excellent hull form with lower resistance and higher efficiency,combined with the nonlinear programming method,an optimization method for acquiring the minimum resistance hull form was proposed based on the wave-making resistance theory of potential flow（Rankine source method）.The design object of the optimization method is full hull lines,and the main objective function is to reduce wave-making resistance,and the stern viscous separation is considered at the same time.By using the simple two-dimensional onflow separation equation,the separation point of each streamline is determined,and then separation domain is calculated approximately.At last,the minimum resistance hull form was obtained by using the separation domain to estimate viscous resistance.Numerical optimiza-tion examples for S60 hull form was provided,which indicate that the total resistance of the hull form is reduced with the tiny change of hull lines.This method can provide theoretical principle and technical support for the line optimization of stern and full hull lines.
出处
《上海海事大学学报》
北大核心
2010年第4期32-35,共4页
Journal of Shanghai Maritime University
