The main research results are obtained as follows:(1) To understand the rheological properties of cohesive sediment, a linear gravity wave theory over Maxwell fluids of finite depth is presented, and a model to solve viscoelastic parameters by Genetic Algorithm and a pseudo-plastic model are developed; (2) A coupled numerical hydrodynamic model for wind waves and currents is developed, and a numerical model for multi-fraction fine sediment transport under combined action of wind, wave and current is developed; (3) Theoretical models for sediment suspension due to waves and combined waves and current are developed, and an analytical solution for sediment suspension due to waves and a semi-analytical solution for sediment suspension due to combined waves and current are obtained; (4) The Lattice Boltzmann Method is used to study the cohesive sediment transport due to combined waves and current, and simulation of wave boundary layer, combined wave and current boundary layer, and cohesive flocs settling in still and turbulent water are carried out.
其主要研究内容和取得的成果有：（1）为了了解粘性泥沙的流变规律，建立了有限深度Maxwell 粘弹性流体上线性重力波理论，并针对影响泥沙运动特性的流变特性进行研究，建立了利用遗传算法求解淤泥粘弹性参数的模式和泥床伪塑性体模型；（2）建立了近岸风浪与水流运动模拟的耦合水动力数值模型和风、浪、流共同作用下多组分细颗粒泥沙模拟的数学模型；（3）建立了波浪及波流共同作用下悬沙分布理论模型，得到了波浪作用下悬沙分布的解析解和波流共同作用下悬沙分布的半解析解；（4）将格子玻尔兹曼方法引入到波流共同作用下粘性泥沙运动的研究中，利用LBM对波浪边界层、波流边界层和粘性泥沙絮团的静水沉降和在水流中的沉降进行了模拟，为从微观角度研究波流边界层运动和粘性泥沙运动开辟了新的思路。
As is well known, the problem of laminar-turbulent transition in a boundary layer is very important from practical application point of view.
从层流到湍流的转捩问题有很重要的应用背景。
The calculational results predict well the flow characteristics of turbulent boundary layer separation induced by incident shock wave: a separation shock followed by expansion fan around separation bubble and shock in reattachment point.
计算结果较好预测了入射斜激波在平直壁面引起湍流附面层分离的流动特征：分离点的反射激波、分离包引起的膨胀扇以及再附点的反射激波。
In this thesis, in order to calculate the viscid effect, Euler equations+boundary layer correction method and N-S equations+S-A turbulent model method are introduced.
另外，本文在计算流场的粘性影响时，分别采用了附面层修正+Euler方程和S-A湍流模型+N-S方程两种方法。
With the design method described and design standard proposed in this thesis, a transonic NLF wing has been designed. Calculation shows that this NLF wing has, even in case of full turbulent boundary layer flow, good transonic aerodynamic characteristics.
本文结合民机预研项目，根据后掠机翼层流流动的特点和已有的经验提出了自然层流机翼的设计准则，用本文的三维机翼设计方法设计了一个跨音速自然层流机翼。
The results obtained are found as follows compared with the corresponding statistics for water flow. The viscous sublayer for the surfactant solution is thicker than that for water flow. The mean streamwise velocity profile falls between those of laminar and turbulent velocity profiles in Newtonian fluid flow. The peak of the streamwise turbulence intensity is smaller than that for water, the location where it appears is further away from the wall and the second peak appears near the center of the boundary layer.
结果表明：与牛顿流体相比，CTAB水溶液边界层的粘性底层增厚；主流时均速度分布有被层流化的趋势，对数分布域上移；主流方向速度湍动强度峰值减小，且远离壁面，在靠近边界层中部，出现第2峰值；垂直于主流方向的速度湍动强度受到了大幅度抑制，雷诺应力沿着边界层厚度方向几乎为零。
The three simulation examples also indicate the capabilities of the present model in resolving flow processes of various length scales, including gravity and capillary waves, viscous sublayer and coherent eddies of a turbulent boundary layer.
以上三例有关三维自由液面流场之应用，验证本论文所发展之模式，可以正确解析自由液面流场不同尺度的物理过程；包括液面重力波、表面张力波、黏滞边界层流场以及紊流结构。
Experimental measurements reveal the concentration is sligtly higher under the action of rural type turbulent boundary layer than that of the urban.
此外，实验结果也显示不同之地形之迫近流场对於重质气体扩散之浓度分布影响不显著，但发现当乡村地形之迫近流场条件下之浓度略大於都市地形。
A latitudinal thin slot in 5 mm width was incised on a smooth flat plate. The periodic blow-suction force with different frequency was applied to turbulent boundary layer from a speaker woofer under the plate. The quantitative influence of local periodic blow-suction disturbance with different frequency on statistic character of turbulent boundary layer had been investigated.
在平板湍流边界层的固壁表面沿展向切割一条5mm宽的窄缝，在平板底部用扬声器从壁面向平板湍流边界层内施加不同频率的周期性吹吸扰动，研究不同频率的周期性扰动在平板湍流边界层内发展演化的规律及对平板湍流边界层统计性质的影响。
Some problems about the vertical distribution of suspended load by disperse theory are analyzed, and a method for calculating the absolute suspended concentration is presented, concentration near bottom being at the upper interface of the turbulent boundary layer.
分析扩散理论解决悬移质垂线分布存在的问题，介绍一种求悬移质绝对含沙量的计算方法，将近底含沙量选在紊流边界层的上边缘。
Distribution of mean velocity, distribution of turbulence intensity and microstructure of turbulent boundary layer of riblet surface were obtained.
针对脊状表面流场的特点，通过实验测量和数值模拟的方法对脊状表面微观流场进行了深入研究，获得了脊状表面湍流边界层的时均速度分布曲线、湍流度分布曲线和微观流场结构。
Riblet surface'flow field were tested separately in low speed wind tunnel and distribution of turbulent boundary layer flow parameters was obtained.
在低速风洞中对制备的脊状表面进行流场测试，获得了其湍流边界层内流动参数的分布情况。
Based on the major mechanisms governing particle movement in turbulent boundary layer and the definition of particle deposition velocity, the governing differentiate equation in particle concentration boundary layer and its analytical solution were deduced, and an analytical expression of dimensionless deposition velocity was achieved.
在分析颗粒在紊流边界层中运动机理的基础上，根据沉降速度的定义，推导出了浓度边界层微分方程及其解析解，进而得到了颗粒无量纲沉降速度的解析表达式。
This paper also proposes simplified formulas for computing turbulent boundary layer and the inlet length of the rough pipe.
本文还给出了粗糙圆管紊流边界层和进口段长度的简化计算式，并建议了粗糙圆管平均流速的计算式及流速分布指数n与参数δ/Δ、δ/R的关系式。
Finally, the developed model is applied to simulate a wind-driven turbulent boundary layer bounded by a dynamic water surface.
最后，我们应用本数值模式，模拟正向风压与风剪应力作用下之三维自由液面边界层紊流场。
In this paper, the new idea simultaneously using the Planar Laser Induced Fluorescence technique and the Acoustic Doppler Velocimeter technique is applied to research the coherent structure of turbulent boundary layer.
本文在评述紊流边界层拟序结构研究现状的基础上，受前人研究工作的启发，提出了使用平面激光诱导荧光技术与声学多普勒测速技术相结合的方法同步观测和研究紊流边界层拟序结构的新思路。
The vector distribution of u', v'and dv'/dx obtained by wavelet analysis in turbulent boundary layer at Re(subscript θ)=3069 were used to verify scaling law and the self-similarity law.
首先，应用小波分析以及传统的统计学方法，对流向脉动速度增量和法向速度增量的概率密度函数进行研究，并和gauss正态分布进行比较，说明在湍流边界层中存在着数量众多的大幅值间歇性事件发生。
D boundary layer with laminar-turbulent transition on a rotating helical blade; ④.
我们的计算实践再次证实了一个事实，即Box方法用于三维边界层计算时并不是无条件稳定的，尽管这是隐式格式，而且在二维情况下是无条件稳定的。
The Counihan system comprising of a castellated barrier wall, seven quart-elliptic vorticity generators and surface roughness was used to generate a deep, turbulent boundary layer.
Counihan系统的组成castellated屏障的墙，七quart-elliptic涡发生器和表面粗糙度是用来产生了深深的、湍流边界层的。
It is found that span-wise TKEDC is nearly 1/3 for a fully developed turbulent flow, based on processing the experimental data of flat-plate boundary layer and the flow past prolate a spheroid according to the new idea.
使用新的思想处理平板边界层及椭球绕流的实验数据后发现，在充分发展的湍流区，流动展向的湍动能分配系数接近1/3。