CAJ | 학술논문

文章对船体的水动力和运动提出了一个快速有效的计算方法。该方法考虑了船体周围流场的三维效应，既适用于细长型船体，也适用于肥大的船型。该方法的出发点是将船体剖面用具有相等面积的等效矩形代替，并将流场划分为船底与水底之间的内场和船侧面之外的外场。对内场，采用简单的解析解；对外场，由于剖面是矩形的，所以可采用在船体水面周线上分布源汇的简单的源汇分布法。对内外场进行耦合匹配进行求解。通过与三维源汇方法计算的结果比较，验证了文中计算的快速性和有效性。
문장대선체적수동력화운동제출료일개쾌속유효적계산방법。해방법고필료선체주위류장적삼유효응，기괄용우세장형선체，야괄용우비대적선형。해방법적출발점시장선체부면용구유상등면적적등효구형대체，병장류장화분위선저여수저지간적내장화선측면지외적외장。대내장，채용간단적해석해；대외장，유우부면시구형적，소이가채용재선체수면주선상분포원회적간단적원회분포법。대내외장진행우합필배진행구해。통과여삼유원회방법계산적결과비교，험증료문중계산적쾌속성화유효성。
This paper presents a simple and efficient calculation method for the ship motions in waves. The method is suitable for the slender ship and the fat ship to consider the three-dimensional flow field around the ship. The starting point of method is approximating the ship section by a rectangle with the same area as that of the original ship section. Then, the flow field is divided into inner domain below the ship bottom and the outer domain beside ship hull. The velocity potential in inner domain is given by an analytic solu-tion, the velocity potential in outer domain is expressed by a source-sink distribution along the contour of ship water area. The two potential solutions are matched at the interface of two domains. This method is validated using the results for the three-dimensional source-sink distribution method.