Using 2 - d strip method and the high - speed slender body theory , the heaving motion responses in regular wave of ship with combined appendage are computed . the results are compared with the results of naked ship hull , and the anti - pitching effect of combined appendage is validated . a method of optimizing the seakeeping is provided from the aspect of the ship hull 因此本文针对船舶耐波性能的优化，提出了一种减纵摇组合附体，将半潜艏和艏鳍安装在常规单体船上，初步阐述了半潜艏和艏鳍的水动力作用机理，并按照二维切片法和高速细长体理论计算了加装组合附体后，船舶在规则波中的垂向稳态运动响应，与裸船体的结果进行了比较，验证组合附体的减摇效果，从船体本身出发提供了?种优化船舶耐波性的方法； 3
In the study of directional spectrum and reflection coefficient of multidirectional wave , firstly the wave elevation trains overlapped by the incident wave and the reflected wave of multidirectional wave are simulated in the method of a frequency corresponding to a direction . then the composed wave trains are analyzed respectively by the mbdm and the mmlm . during the numerical study , the input factors include the various wave parameters , the different measuring wave system and the various reflect characteristic 在多向不规则波入射波方向谱和反射系数的分析研究中，利用方向频率对应法模拟了多向不规则波入射波与反射波叠加的波面序列，将此合成波列分别应用mbdm和mmlm进行分析，通过输入各种波浪参量、不同波浪测量系统和各种反射特性等因子，检验了mbdm和mmlm方法的适用条件，对两种分析方法的性能进行了比较分析。
In the analysis of the frequent spectrum and the reflection coefficients , based on goda ' s two - points method which fit to the normal incident wave , a modified two - points method is derived that can be used to calculate the frequent spectrum and reflection coefficient of the oblique waves from which the frequent spectra of incident waves and reflected waves incoming in arbitrary angular , the bulk reflection coefficient and the frequent spectrum of reflection coefficient could be computed , also from which in theory the waves could be measured in two wave gauges which is disposed at any direction 为了分析单向不规则波入射波的频率谱和反射系数，本文在goda用于分析正向不规则波的两点法的基础上，提出了可用于斜向不规则波频谱分离及其反射系数计算的改进两点法，该方法可用于计算任意波浪入射角的入、反射波谱、总体反射系数和反射系数的频率谱，并且测量波浪过程的两浪高仪可在较广的方向范围内布置。
Solution of nonlinear wave loads in regular oblique seas . based on strip method , thinking about nonlinear factors such as no straight shipboard on waterline , the instantaneous variation of wet surface shape and slamming effect of ship bottom , the numerical methods of nonlinear fluid force in large amplitude oblique regular seas are discussed 关于斜浪规则波中非线性波浪载荷的计算:本文基于切片理论，考虑到船体非直舷、水下剖面形状的瞬时变化以及砰击等非线性因素，讨论了大波幅斜浪规则波中非线性流体力的时域计算方法。
After the systemic comparison of the two methods , the detail applicable conditions have been suggested . by the physical model tests and various methods , the frequent spectrum and the directional spectrum of incident waves and reflected waves of slope breakwater have been investigated systemically , and the bulk reflection coefficients , the directional spreading of reflection coefficients and the frequent spect 通过物理模型试验，系统地研究了斜坡堤前入、反射波方向谱的分离计算，采用mtpm分析得到了单向(包括斜向)不规则波的总体反射系数和反射系数频率谱(随堤坡变化)以及由iribarren数表示的包含堤坡影响的反射系数频率谱。
On the basis of this analysis the radiation and diffraction forces of the ship are calculated using these three methods and compared . at the same time vertical ship motions in regular wave are solved by these three methods . the results are compared to test each method ' s availability and suitability , thus the theoretical basis of optimize design of sea - keeping performance is provided 分别介绍了二维切片法、高速细长体理论和三维理论的基本原理，分析了三种不同方法各自的适用性，在此基础上分别计算了船舶的辐射力和绕射力，比较了这三种方法的计算结果，为不同营运目的的船舶耐波性计算提供陕速有效而实用的计算方法；同时应用三种方法计算了船舶在规则波中的垂向稳态运动响应，比较三种方法的计算结果，测试各种方法的有效性和适用性，为船舶耐波性的优化设计提供原始的理论基础； 2
