本文用Rankine奇点面元法计算了深、浅水中三维水翼的定常升力绕流.水翼的厚度和升力效应分别以水翼表面分布的Rankine源和法向偶极子来模拟,在自由表面上也分布Rankine源,通过满足相应的边界条件和尾缘处的Kutta条件求出这些奇点强度.以在自由表面下作小攻角定常运动的水翼为例进行了计算,计算结果与试验结果和其他计算结果作了比较.%A panel method using Rankine singularities for calculating steady three-dimensional lifting potential flows about hydrofoils moving beneath the free surface in deep or shallow water is presented in this paper. The thickness and lift effects of the hydrofoils are represented by a distribution of Rankine seurces and normal dipoles on its surface. The free surface is represented by a distribution of Rankine sources. The strengths of these singularities are determined by satisfying the corresponding boundary conditions and Kutta condition at the trailing edge. Numerical procedure is developed for hydrofoils in steady motion at small angle of attack beneath the free surface. Computational results are compared with that of experiments and other computations.
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