船体三维厚边界层理论计算

将描述船体粘性绕流的完整的Ｎａｖｉｅｒ－Ｓｔｏｋｅｓ方程简化为部分抛物线模式，辅以Ｃｏｌｅｓ速度剖面和Ｈｅａｄ渗入方程，应用流线坐标系中的积分－差分算法，求解绕船体三维边界层的流动参数。对于船模ＳＳＰＡ ７２０的考核计算表明，自船首９０％的船长范围内，有关边界层参数的计算结果同相应测试值符合得令人满意。本文为船体粘压阻力与近尾流场计算提供了一个有效的数值方法。

Calculation of thick three dimensional boundary layer on ship hulls

A numerical approach of determining flow parameters of thick three dimensional boundary layer on ship hulls is presented by using the partly-parabolic mode of simplified Navier-Stokes equations with Coles velocity profiles and Head entrainment equation and with orthogonal curvelinear coordinates and the integral-differential computation. The results of calculation for SSPA Model 720 show that relevant parameters of boundary layer on hull surface have a good a greement with corresponding measurements from model test and this approach can be applied to determining viscous-pressure resistance of ship hull and to computing flow parameters of wake flow field on ship stern.