【作者】 唐浩云； 张显库； 田佰军； 任慧龙；

【Author】 TANG Hao-yun;ZHANG Xian-ku;TIAN Bai-jun;REN Hui-long;Navigation College,Dalian Maritime University;,College of Shipbuilding Engineering,Harbin Engineering University,Harbin 150001;

【机构】 大连海事大学航海学院； 哈尔滨工程大学船舶工程学院；

【摘要】 为了快速有效地模拟船舶在波浪中的运动和载荷状态,本研究利用时域Rankine源和自由面Green函数求解船体与波浪相互作用的原理,发展了一种基于时域Rankin-Green混合的船舶运动和载荷预报方法。方法通过引入B样条曲面和瞬时网格截取技术,进一步计及了船体物面非线性的影响。并以单体船和高速多体船的预报为例,论证了混合源法的可靠性,分析了数值模拟中不同航速引起的稳态时间变化,以及自由面域大小和网格密度对于理论预报的影响。最终,给出了工程计算所需的相关参数取值,为后续时域混合源方法的工程应用打下坚实的基础。更多还原

【Abstract】 Based on the principle of time-domain Rankine source and free surface Green function to solve the interaction between ship and wave,a kind of time domain Rankine-Green hybrid method for ship motion and wave load is developed to simulate the ship motion and load state quickly and effectively.And the nonlinear effect of hull surface is considered further using B-spline surface and instantaneous mesh technology.Based on the motion and wave load prediction of single hull and high-speed multihull,the reliability of hybrid source method is demonstrated.And the characteristics of this method are illustrated by analyzing the arrival time of steady state in different speeds,the influence of free area size and the mesh density towards theoretical predicted results.Finally,the parameters needed for engineering calculation are given,which establish a solid foundation for the subsequent engineering application of hybrid source method in time domain.更多还原