机动航态下水中航行器边界层特征参数计算建模研究

文章基于边界层积分求解理论,进行了机动航态下水中航行器厚边界层计算建模,发展了求解动量积分方程组的数值计算方法。编写了相关计算程序。针对SUBOFF潜艇,利用编写的程序,计算得到了边界层特征参数沿艇体分布的曲线,分析研究了机动航态下边界层特征参数变化规律。结果表明,编制的计算程序可用于机动航态下水中航行器边界层特征参数计算分析,为水中航行器水动力性能评估提供技术支持。

Modeling and computation of boundary layer characteristic parameters around underwater vehicle at maneuvering condition

The boundary layer integral solution theory is adopted to model thick boundary layer around un-derwater vehicle at maneuvering condition.The corresponding calculation code is developed.The computa-tion of characteristic parameters of boundary layer around SUBOFF submarine is carried out. The comput-ed results including boundary layer thickness, shape factor, momentum thickness and friction coefficient are analyzed. The variation of characteristic parameter is obtained at maneuvering condition. The result shows that the calculation code developed in this paper can be applied to analyze the underwater vehicle's 3D boundary layer characteristics and evaluate hydrodynamic performance.