| 1. | A modified simple green function technique was used to calculate 2d coefficients while strip theory was used to calculate 3d coefficients 为计及水深的影响,采用简单格林函数方法求解剖面水动力系数,提出了满足辐射条件的一种较方便的数值方法。 |
| 2. | The thesis presents some modifications to make the strip theory results meet engineering demands enough even when the oscillating frequency is relatively high 本文提出了一些针对性的改进措施,使之在短波长情况下也能给出满足工程需要精度的结果。 |
| 3. | The strip theory can meet the demand of shipbuilding engineering . but the common method can only use on ships with lateral symmetry which is in the state of zero trim 当今广泛采用的切片法满足了工程上所需要的精度要求,但一般都只能适用于正浮状态具有横向对称性的船舶。 |
| 4. | Presently , the strip theory has become an ordinary and utility method for the calculation and prediction of ship motions and loads in waves , because of its virtues that other methods are beyond compare 切片理论具有其它方法无法比拟的优点,目前已成为船舶在波浪上运动和载荷计算和预报的一种常规的实用手段。 |
| 5. | The mathematical models on ship ' s motion and load are based on the strip theory . at the same time , the motion and load is mathematically simulated and the result is visualized with the real - time graph 本文首先从切片法入手,建立了船舶运动的数学模型,在此基础上对船舶的运动与载荷进行了数字仿真,用实时曲线图对仿真结果进行可视化。 |
| 6. | Tested in actual condition , by using the strip theory with precise forecast of wave and wind combined , the calculation accuracy of feasibility analysis of transporting will meet the requirement in engineering 计算实例验证了在准确的波浪预报前提下,采用二维频域切片理论分析半潜船运输海洋平台可行性的方法,可以得到满足工程需要的分析结果。 |
| 7. | In this paper the characters of rig and heavy lift vessel , the transportation market of rig and heavy - lift vessel operation are introduced ; the process and content of the feasibility analysis of rig transportation using heavy - lift vessel are described ; the metocean database imdss and the strip theory used in feasibility analysis are introduced and evaluated 本文介绍了海洋平台的特点和海洋平台运输市场的情况;半潜船的特点以及用半潜船运输海洋平台的载运工程的过程。探讨了半潜船运输钻井平台可行性分析的方法和内容,提出并评价了可行性分析中用到的遭遇风浪数据库imdss 、波浪理论、切片法等技术。 |
| 8. | After solution of radiational and diffractional fluid field of asymmetrical sections by applying the multipole expansion method , wave loads on damaged ships are calculated by the linear strip theory under the non - upright floating condition , taking the effect on the heel angle and trimming angle caused by the damaged tank inundation below waterline into account 然后采用线性切片理论,计及水线以下破损后船舶由于舱室进水产生的横倾角与纵倾角的影响,利用多级展开法求解非对称剖面的二维辐射和绕射流场,计算了破损船体非正浮状态条件下的波浪载荷。 |
| 9. | This method applies the extended strip theory to establish the nonlinear ship motion equations in regular head seas , obtains stable time course by resolving in time domain , and then pressure vectors will be available . the pressure includes static pressure , incident waves pressure , diffraction pressure , radiation pressure , and wave impact pressure , and changed with instantaneous draft of each intersection 该方法应用扩展的切片理论建立迎浪规则波中船舶非线性运动方程,通过时域步进求解获得船舶刚体运动的稳定时历,进而给出与船体各横剖面瞬时吃水相对应的静水压力变化、入射波压力、绕射压力、辐射压力和波浪冲击压力诸分量。 |
| 10. | In this paper , the simulation on naval ship ' s motion and load in waves are studied on the basis of strip theory . equations on the ship ' s motion are set up and as a result , the load is calculated . the simulation is proceed under the model by using mfc of visual + + 6 . 0 为了船舶设计和船舶使用的需要,本文是在切片法求解船舶在海浪中的运动和所受的载荷的基础上,利用visualc + + 6 . 0进行了仿真运算,结合这一仿真过程,利用opengl三维图形库进行了船舶运动的实时动画仿真,对船舶运动预报、载荷预报进行了可视化的研究。 |