船体绕流计算网格自动生成研究

应用保角变换函数和多项式拟合函数，建立了覆盖船体表面及其外场的数值计 算网格自动生成的数学模型和计算机程序。此项研究的主要贡献为：应用边界层薄层 理论计算结果控制网格的总体扩展，应用边界层速度剖面的指数分布律控制网格的局 部扩展；从而保证了计算网格的有效性。可用于船体势流与粘性流的绕流计算，也可 用于船型的计算机辅助设计。

Auto-Generation Method of Numerical Grid for Surface and Field around Ship Hulls

An auto-generation method of the numerical grid to cover the surface and the field around ship hulls is proposed by using a conformal mapping function and a polynomial function. The main contributions of the present work are as follows: 1) the wall velocity profile for the turbulence is used as a basis for the local stretching; 2) the computation results using TSL approximation is used as a basis for the global streching of the numerical grid. This method can be applied to the calculation of the potential and the viscous flow around ship hulls and to performing of the computer aid design of ship forms.