【作者】 高高；

【Author】 Gao Gao (Wuhan University of Technology, Wuhan 430063,)

【机构】 武汉理工大学；

【摘要】 以基于NURBS(non-uniform rational B-splines,非均匀有理B样条)的高阶面元法数值计算了排水型高速船舶兴波波形与阻力。引入了一种基于Schoenberg-Whitney 定理的简易有效且计算量小的NURB曲面插值算法。提出一种类似于Kutta条件的方尾边界条件并讨论了相应的数值处理。以NPL船型为例,采用波形分析的纵切法与横切法分别对单体船与双体船由计算波形作波形积分求取波形阻力,与有关实验值的比较结果表明了该方法的有效性。更多还原

【Abstract】 The wave patterns and wave pattern resistance for high-speed displacement vessels, mono-hulls or catamarans, are calculated adopting a generalized higher-order panel method based on NURBS (non-uniform rational B-splines). An effective interpolation based on Schoenberg-Whitney theorem is presented to create a B-spline surface. A Kutta-like boundary condition at the transom stem and corresponding numerical treatment are discussed. The calculated results for catamarans characterize the complex wave system caused by the interference of divergent waves between the demi-hulls. The wave pattern resistance of mono-hull and catamaran of NPL lines is obtained by wave pattern integral through longitudinal cut and transverse cut from the calculated ship waves respectively. The result of this method is reasonable compared with the published data.更多还原