| 1. | Approximate calculation of super - cavity profile based on slender - body theory
基于细长体理论的超空泡外形估算 |
| 2. | The results reveal that the vortex has strong reorganizing effects on the fiber distributions
主要用到的方法是谱方法和细长体理论。 |
| 3. | On the slender body theory , this thesis simulated numerically the movement of hundreds of fibers in pipe flow , and finally , got the macro character of pipe flow of fiber suspensions
本文采用数值模拟的手段，从lagrange法出发，利用细长体理论研究了大量纤维粒子在管流内的运动，并得出管道悬浮流的一些宏观特性。 |
| 4. | In this paper , the theory of slender bodies was used to calculate hydrodynamic forces and to numerically simulate the underwater trajectory of supercaviting bodies , the motion stability of supercaviting bodies was analyzed , too
本文应用细长体理论计算航行体在超空泡状态下的流体动力，成功类比了超空泡状态下的航行体水下弹道。 |
| 5. | In this thesis , the application of fiber suspension and its research history are reviewed as well as its current research situations . the thesis also demonstrates in details the slender - body theory that is widely used under low re number conditions
本论文阐述了纤维悬浮流的应用意义、研究历史与研究现状，对低雷诺数下广泛应用的细长体理论的基本原理及其应用进行了详细介绍。 |
| 6. | 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 |
| 7. | Firstly , when the pipe flow was laminar , the movement of fibers was computed in the 2 - d force formulae that were deduced from the slender body theory and in 3 - d integral method . results revealed that angles between fibers " axis and the orientation of flow would concentrate gradually on a low number as the re numbers increased . that is , the axis of fibers would rotate toward the orientation of flow
首先，当管道内流动为层流时，分别利用从细长体理论出发得出的纤维二维受力公式和三维分段积分计算方法模拟了大量纤维在流场中的运动，然后在最终时刻统计了纤维的偏角分布，并得出相同的结果：随着re数的增加，纤维粒子的偏角逐渐集中于小角度，即纤维轴线方向越来越集中于流向，此结果与实验吻合较好。 |
| 8. | This thesis researches on the stability of fibre suspensions applying theoretical , numerical and experimental methods . first the linear stability analysis is performed to fibre suspensions utilizing flow stability , slender - body and orientation tensor theories . the governing equations of channel and pipe suspensions of different stability handling modes and tensor closure approximations are derived
首先综合应用流体动力稳定性理论、细长体理论以及纤维方向张量工具，对纤维悬浮流进行线性稳定性分析，推导槽流和管流的稳定性方程，并对槽流导出在不同的稳定性分析模式以及不同的方向张量封闭格式下的多种形式方程。 |
| 9. | 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 |
