流体化

In this thesis, an unmagnetized, collisionless dusty plasma which consisted of extremely massive, highly negatively charged dust particles, ions and electrons are studied. Considering the effects of hot dust fluid with non-thermal ions and variable dust charge, we study the self-consisted system parameters on the structures of the dust-acoustic solitary waves by reductive perturbation methods.

本论文研究无磁化、无碰撞的、由大质量且带负电量的尘埃颗粒、电子和离子组成的尘埃等离子体，考虑尘埃流体的温度、非热离子和尘埃颗粒电荷绝热变化的因素，使用约化摄动方法研究这个自洽的系统的参数对尘埃声孤波结构的影响。

Based on numerical computation, glass microfiuidic chips are fabricated, and experiments using microfluid fluorescence visualization technology are conducted to study sample electrophoresis transport characteristics in microchannel turns, with the aim to verify results of numerical computation.

在数值计算的基础上，制作了玻璃微流控电泳芯片，采用荧光可视化微流体实验技术，在微流控动态观测平台上实验研究了弯曲微通道中的样品电泳输运特性，验证了数值计算结果的正确性。

The flow characteristics in the flow path of emitters must be understudied roundly in order to design an emitter with high performances.But the labyrinth path was very narrow and complex,and the archetype experiment of the emitters was unreasonable both in the technology and...

通过对迷宫式流道内部流体流动特性的分析，构建了表征迷宫式流道内部流动的数学物理模型；对所选取的目前中国农业灌溉领域最为典型的三种圆柱型灌水器，借助FLUENT6.1 CFD流场软件分析平台实现了流道内部流速分布、涡量分布、紊流强度分布等流动特性的可视化，为新型灌水器流道研制提供一定理论基础。

By using volume control method, the basic equations of axial laminar flow for power law fluids in eccentric annuli was seperated and sovled by ADI method.

利用控制体积法对幂律流体偏心环空轴向层流流动的基本方程进行了离散化处理，并用ADI方法进行了求解。

Reefs, reef-mounds and lime mud mounds are all carbonate buildups, and the reefs and banks are important targets for petroleum exploration The reefs, banks and mounds should be divided from each other not only in theory, but also in exploration practice, because of so many differences in sedimentary compositions, fabrics, environments, distribution in time and space, and the characteristics of petroleum geology If the original reef or bank itself was fine reservoir rocks, then it would become a better reservoir after the reservoirconstructive diagenesis The formation of a high quality carbonate reservoir is controlled by two factors: the sedimentary microfacies and the reservoirconstructive diagenesis The first is the basis for the formation of a high quality reservoir, and with the high energy reefbank facies as the best; the latter includes the cataclasis, the dolomitization and the karstification The dolomitization and karstification are the best for the formation of a high quality reservoir The karstification has the widest distribution, profoundest effect, and plays a vital role in the high quality reservoir forming The karst types are quite rich in the limestone reef or bank reservoir, including synsedimentary karst, penesedimentary karst, supergene karst and hydrothermal karst, and so does the dolomitization reef or bank reservoir The formation mechanism of synsedimentary karst and penesedimentary karst is related to the short time exposing and leaching of the cyclical highfrequency shallowupward sequence when the reefs or banks are forming The supergene karst is controlled by the exposing and leaching of tertiary cyclic sequence type I interface after the reefs or banks forming Thus, there developed a great deal of secondary corrosion pores, corrosion fractures and huge caves besides some original pores remained in the reef and bank reservoir Scarcely there are any original effective pores in reefmounds and lime mud mounds, especially in senkes among mounds, but secondary pores could be formed by karstification, and there would likely develop source rocks with high organic abundance

礁、礁丘、丘同属碳酸盐建隆，礁、滩是重要勘探目的层。但各自在沉积组分、组构、环境和时空分布，以及油气地质条件上迥然不同，因而无论从理论还是勘探实践上，都有必要将其各成体系划分开来。礁滩自身为好储集岩，当建设性成岩作用叠加后可形成好的储层。碳酸盐岩优质储层形成，主要受沉积微相与建设性成岩作用两大因素控制。前者是基础，并以高能的礁滩相带为最好；后者主要包括破裂、白云石化和溶蚀三大类，并以白云石化或溶蚀为最优，其中的溶蚀分布最广泛、影响最深刻而对优质储层形成起决定性作用。礁滩储层中的古岩溶类型最为丰富多彩，包括同生期、准同生期、表生期和埋藏期热流体岩溶的所有类型，白云岩化礁滩体也不例外。其中，同生准同生期岩溶的形成机制与礁滩沉积时高频层序旋回向上变浅序列的短暂暴露淋溶有关，表生期岩溶则受控于礁滩沉积后三级层序旋回Ⅰ型界面的暴露淋溶。由此，导致礁滩储层中除了可以也是唯一保存原生孔隙外，还发育了次生溶蚀孔洞缝和大型溶洞。礁丘、灰泥丘尤其是丘间洼地中发育高有机质丰度烃源岩；它们自身没有有效的原生孔隙，但岩溶作用可以形成次生孔隙。

Therefore, the numerical simulation of cavitating flow is becoming more and more important.

本文采用双流体模型对水力机械中三维两相空化湍流进行数值模拟。

With famous flow-field analytic software CFX we also simulated the flow's details in the homogenizers head, and analyzed it's infection to the homogenization process using the simulation results. We also established the dynamic model of the stator-rotor of shear homogenizer system, and analyzed important factors that affect the system's stability with the help of the poincarémaps, axes contrails, phase plane portraits, times-history and amplitude spectrum which were attained by Fortran language and Matlab program.

然后，本文运用商业通用流体动力学分析软件CFX对均质头内部的流场进行了仿真模拟，并与数学模型相结合，探讨了剪切式均质机内部的流场对均质效果的影响，得出提高转速是提高均质机效率的关键，但是转速的提高又直接关系到系统的稳定性，于是紧接着建立了剪切式均质机转子系统的动力学模型，经无量纲化和必要的简化后再运用Fortran语言和Matlab软件对该模型编写相应的程序，得到了庞卡莱图，轴心轨迹图，相图，波形图，频谱图等图谱。

The theoretical foundation for further research is established. In chapter 6, the flow field of poppet valve and spool valve which are two kinds valve frequently used in hydraulic technique are predicated by finite element method. The flow field structure at different valve opening are illustrated by visualizing images. The effect on the flow noise and energy loss probably caused by vortexes is analyzed quantitatively, the flow channel of the valve is improved.

第六章用有限元方法对液压传动与控制中最常见的两种结构形式的液压阀—液压滑阀和液压锥阀流场进行数值预报，给出不同开口度和不同结构尺寸下流场结构的可视化图像，定性分析涡旋的产生对流体噪声及能量损失可能产生的影响，并对阀的流道结构进行改进。

Ion chromatography analysis on the leachates shows that formate generally exists as dominant short-chain carboxylate species.

浸取液的离子色谱分析表明，大井银铜矿各矿化阶段的成矿流体中普遍存在以甲酸为主要物种的短链羧酸。

The fluid-structure interaction dynamic characteristic of steam generator U-bend tube is simulated by using ANSYS parametric design language,focusing on the influence of the anti-vibration bars of the U tube.

应用ANSYS参数化设计语言对蒸汽发生器U形管流体结构耦联系统动态特性进行了数值模拟，着重考虑了防振条对U形管固有频率的影响。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。