【摘要】 本文以理想流体的势流理论为基础，采用以Ｒａｎｋｉｎｅ源势函数为基函数的边界元法，引入微平面三角形来逼近船体表面，并求其几何要素，在三角形面元上布置强度为线性分布的源汇，给出计算实船表面流场各物理量的数值计算方法、经用Ｗｉｇｌｅｙ数学船型验证，其结果合理可靠。在此基础上，本文又计算了球尾渔船的两个方案（平龙骨和倾斜龙骨），结果表明：倾斜龙骨球尾渔船的流场分布更为均匀更多还原

【Abstract】 Based on the potential flow theory of ideal fluid, a boundary element method using Rankine source potential function as basis function is adopted in this paper.Triangular patches are applied to approach ship hulls.A numerical method for calculating physics parameters of flow fields over ship hulls is presented by distributing sources with linearly varying strength over these patches.The calculation results of Wigley mathematical ship model have been illustrated to be realiable and reasonable.Two forms of bulbous stern fishing boat, that is, flat keel and slant keel fishing boat,have been calculated,the results show that flow distribution of the latter looks evener.更多还原