There are some special issues that cause difference to predict fluid flow in fractured vadose zone, including capillary flow, film flow, preferential flow and fracture-matrix interaction.
非饱和带裂隙岩体中的渗流和饱和带相比有其不同的特点，包括毛细管流、薄膜流、优先流和裂隙-基质相互作用等。
The fact that this instability exists means that very soon after a fracture opens, fluid flow begins to focus along tiny ripples and build some bigger channels at the expense of others.
这种不确定的存在意味着当一个裂缝打开后，流体开始集中为微小的涟漪，在破坏其他通道的条件下形成更大的通道。
The fact that this instability exists means that very soon after a fracture opens fluid flow begins to focus along tiny ripples and build some bigger channels at the expense of others.
这种不确定的存在意味着当一个裂缝打开后，流体开始集中为微小的涟漪，在破坏其他通道的条件下形成更大的通道。
In light of the operating condition, design principle, stress condition and the characteristic of air flow, the cause of fracture and mechanism of primary fan was studied and analyzed in this paper.
从风机叶片的运行工况、设计结构和受力状况以及气流流动的特点等方面，研究和分析了叶片产生断裂的原因和机理。
The big differences exist for the influence of different aqueous solution, different rocks, different immersion ways and different velocity of cycle flow on the fracture mechanics effects of rock.
不同岩性、不同浸泡方式及不同水溶液流动速率对岩石断裂力学指标的影响存在着较大差异。
The fracture of the pins was caused by improper assembly flow and lower adhesion strength of the fixing glue.
装配方式不合理，固定胶粘接强度不足和工艺不完善是导致引脚断裂的原因。
The main reservoir space of fractured reservoir are dissolved pores, karst cave and fracture. At the same time, fracture is the flow channel of fluid.
裂缝性储层以溶孔、溶洞及裂缝为主要储集空间，同时，裂缝又是流体的渗流通道。
Based on analyzing the micro critical seepage phenomena of gas-liquid two-phase flow in a single fracture, a random and compound mathematical model was constructed to describe this phenomenon.
通过对裂缝中气液二相流体临界渗流现象的分析推理，建立描述这一现象的随机混合渗流数学模型。
Multilayer fracture model usually make up of flow distribution model and single fracture extension model.
多层压裂裂缝延伸模拟模型主要是由流量分配模型和单裂缝延伸模拟模型两部分组成。
During the process, the flow character within the fracture greatly influenced on the fracture prolongation and shapes.
水力压裂过程中，缝内流体的流动特征对裂缝的延伸和形态具有很大的影响。
The micro wear mechanism for PEN is plastic flow and broken of the fiber structure, while that for PI is crack initiation, extending and block fracture.
PEN薄带的微观磨损机理主要是纤维组织的塑性流动和拉断，而PI薄带的微观磨损机理为裂纹的萌生、扩张和块状剥落。
The fluid flow among the fluids was not considered in fracture reservoir in the past, and only the source and sink was considered in the fluid exchange between the fracture and matrix.
以往的裂缝性油藏并没有考虑流体之间的渗流，仅仅将裂缝和基块之间的流体交换作为源和汇；
In many engineering such as oil-gas exploitation, coalbed methane exploitation and extraction, there always occurs gas-liquid two-phase flow through a fracture.
在石油天然气开采、煤层气开发及煤矿瓦斯抽放等工程领域中，都存在着裂缝中气液二相流体渗流的问题。
To investigate the effect of initiation location of new fractures on well production, a reservoir model and a hydraulic fracture model are combined to model the fluid flow after re-fracturing.
针对重复压裂不同起裂位置对油井产量的影响问题，采用油藏流动模型和水力裂缝流动模型共同描述系统的流动。
In view of seepage process in vertical fracture well in low permeability reservoir, considering kickoff pressure gradient and media deformation coefficient, bilinear flow model is established.
针对低渗透地层垂直裂缝井的渗流过程，考虑了启动压力梯度和介质变形系数的影响，建立了三线流模型。
The design mainly involves the analysis of the stress, fatigue, thermal ratchet and fracture mechanics, the analysis of flow-induced vibration of the internals and the test verification.
主要涉及的内容包含每个设备部件的应力、疲劳、热棘轮、断裂力学分析和内部构件流致振动分析以及试验验证等。
At the same discharge, flow shear rate of fracture fluid is high in the fracture of the thin layer, and its viscosity is low.
在相同排量下，压裂液在薄层裂缝中流动剪切速率高，粘度低。
According different fracture geometrical characters, this paper presents a lot of typical pressure curves and analyzes the flow period of these curves.
绘制了不同油藏边界下，具有不同裂缝几何特征的压裂水平井典型试井曲线，并对特征曲线进行了流动期分析。
The groundwater flow and solute transport is very complex because of the intense variability in rock network fracture. How to simulate the water flow and solute transport is a very important question.
由于基岩裂隙网络系统具有强烈的空间变异性，所以其中的地下水流动和溶质运移十分复杂，如何模拟这种系统中的地下水流动和溶质运移一直是一个很重要的问题。
The equation of the process is raised and calculated. The results show that the flow rate of chemical grout in fracture system is much less than that in porous system.
对这一过程建立方程描述并求解，结果显示了化学浆液在孔隙系统中的吸渗速度远小于在裂隙系统中的流动速度。
Cubic law of flow in single fracture is a basic and important law in the rock mass hydraulics.
单裂隙水流立方定律是岩体水力学中最基本的。
According to the theory of fracture flow, the theory and methods to analyze the hydraulic and geometric properties of fractured rock using constant-pressure well test data are given.
依据裂隙水流理论，提出了利用压水试验资料分析裂隙岩体水流几何特征和水力学参数的理论和方法。
On the other hand, the fracture elements are discretized into triangular mesh, and the flow finite element equations are derived based on the variational principle.
另一方面，对裂隙单元进行三角形单元的有限元网格划分，运用变分原理导出裂隙单元的渗流有限元求解方程。
Fracture is a main type of fluid flow path in tight reservoir rocks, and its development and distribution may control the formation of fractured hydrocarbon reservoirs.
裂缝是致密储层流体渗流的主要通道，裂缝的发育、分布规律控制着裂缝性油气藏的分布。
Finally relationship model of rock mass fracture deformation and seepage was established to obtain the relationship of groundwater flow and rock mass fracture and deformation.
最后建立了岩体裂隙变形与渗流关系模型，得出矿山地下水在岩体中的流动与岩体裂隙变形之间的关系。
According to many affection factors such as fractures space and number, etc, the bottom-hole pressure and fracture flow rate distribution of horizontal well are analyzed in this paper.
针对裂缝间距和裂缝条数等影响因素，对水平井井筒压力和不同裂缝的流量进行了分析。
For the low porosity and permeability reservoir of Shi Wu Oilfield, fracture is the main flow channel of oil and gas. So it is essential to do a comprehensive research on the fracture.
对于十屋油田营城组低孔低渗储层，裂缝是油气的主要渗流通道，所以有必要对裂缝进行全面的研究。
A dual-porosity and dual-permeability model of fracture-vug carbonate reservoir is established, and fully implicit method is used to solve the inter-porosity flow function.
在此建立了碳酸盐岩缝洞型油藏双孔双渗渗流模型，利用全隐式方法对孔洞与裂缝间窜流量的计算函数进行了求解。
During the development, the production of producers is affected by many factors, such as the attenuation of formation energy, pressure sensitive effect and the attenuation of fracture flow capacity.
对于异常高压特低渗透压敏油藏注水开发困难，一般采用人工压裂依靠天然能量开发，开发过程中油井产量受地层能量衰减、压敏效应以及裂缝导流能力衰减等因素的影响。
During the development, the production of producers is affected by many factors, such as the attenuation of formation energy, pressure sensitive effect and the attenuation of fracture flow capacity.
对于异常高压特低渗透压敏油藏注水开发困难，一般采用人工压裂依靠天然能量开发，开发过程中油井产量受地层能量衰减、压敏效应以及裂缝导流能力衰减等因素的影响。
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