diffraction force meaning in English
绕射力
Examples
- The calculated drafts covers the whole possible ship draft in the large amplitude motion ; secondly , the research creates and solves the ship large amplitude motion equations . on the one hand , the actual calculation takes into account the coupling between the different motion modes , on the other hand , in the process of calculation of the ship hydrodynamic coefficient , it considers the influence of the nonlinear factor . the hydrodynamic coefficient used in the calculation of froude - krylov force , diffraction force and radiation force changes instantaneously following the draft , and the hydrostatic buoyancy is computed very accurately for the instantaneous immerse hull
本文的研究分为二个部分：首先利用frank源汇法计算水动力系数，计算包括不同吃水时的附加质量和阻尼系数，吃水范围涵盖了船舶大幅度运动时所有可能的吃水；然后建立和求解船舶大幅度运动方程，在实际计算时一方面考虑了运动模态之间的耦合，另一方面在计算水动力时，考虑了非线性因素的影响。 froude - krylov力、辐射力、绕射力中的水动力系数随吃水瞬时变化，静浮力的计算精确到船体瞬时湿表面积，最后用四阶龙格?库塔方法在时域内求解船舶运动方程，并进行了载荷计算。 - 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