任意形状港湾的水波振动

利用线性势流理论对定常水深且置于广阔海域中的任意形状港湾在入射波作用下的港内振动进行了研究，利用源汇分布法，在港湾边界上布置源汇，并在入口处利用内外场的匹配条件，来求解置于港湾边界上的源强，进而求得港湾内的整个流场，作为算例，就一矩形港湾在不同方向，不同波数入射波情况下的港内水波振动问题进行了计算分析，结果表明，在一定入射波条件下矩形港湾会产生明显的水波振动，双开口港湾的共振程度在某些情况下要小于单开口情况。

Oscillations of Harbours of Arbitrary Shape

In linear potential theory regime, a problem on the oscillations of the harbours of arbitrary shape and constant depth in open ocean was analyzed. By using the method of wave source distribution, sources were distributed along the boundary of the harbour, then by using the matching conditions of the inner and outer fields on the entrances of the harbour, the strength of the sources was calculated. As an example, the oscillation of a rectangular harbour due to the incident waves with different directions and wave numbers was investigated. The results demonstrate that there exist obvious oscillations of harbours when the incident wave satisfy some condition, and sometimes the oscillation extent of the harbour with two opens is less than that of the harbour with one open.