潜艇的三维厚边界层研究

建立了三维湍流边界层及尾流的动量积分方程,通过算例将计算结果与Gadd的结果进行比较和分析,验证了该方法的可靠性.在潜艇的粘性边界层计算过程中,应用了在势流理论基础上建立起来的艇体表面流线坐标系,对潜艇周围的三维厚边界层进行研究,得到了潜艇边界层及尾流的特征参数,给出了附体(围壳和尾翼)对特征参数的影响.在考虑排挤影响后,艇体采用等价源方法而尾流采用等价假想体法,通过势流计算得到潜艇表面的压力分布.

Research of the three-dimensional thick boundary layer on a submarine

The momentum integral equations of three-dimensional turbulent boundary layers and wake are introduced.It indicates that the implementation is creditable by comparing the computed results with the results of Gadd's.Three-dimensional thick boundary layers around a submarine are investigated in the streamline reference frame based on the potential flow theory.The characteristic parameters of the submarine boundary layers and wakes are obtained.The effect of the appendages on the characteristic parameters is discussed.Equivalent source method is used,while equivalent imaginary body method is adopted in wakes.Under considering the effect of displacement,the pressure distribution of the submarine can be calculated.