Porosity is important for water-storage capacity, but for water to flow through rocks, the pore spaces must be connected.
孔隙度对地层储水能力尤为重要，但要让水能够从岩石中流出，孔隙之间必须相互连通。
Porosity is presented as a concept and approach to simulate solid bodies with various geometry and character in flow fields.
本文提出一种能模拟流场中不同形状和性质的固体的新方法——空度的概念。
Relative porosity factor value can be used to characterize the relation between the molecular size of the polymer and the its retention in the flow of polymer solution through porous media.
相对孔隙系数值可用以表征聚合物溶液流经孔隙介质时聚合物分子尺寸与滞留作用的关系。
Then this paper selects porosity, permeability, flow zone index and other parameters to carry on cluster analysis, divide flow units and establish identification index system of flow units.
在此基础上选取孔隙度、渗透率、流动层带指标等参数进行聚类分析，划分流动单元并建立流动单元判别指标体系。
Porosity, surface density, thickness, flow resistance, structure factor and other factors affect the sound absorption coefficient.
孔隙率，面密度，厚度，流阻，结构因数因素综合影响其吸声系数。
The core flow and evaporation experiment was carried out. The porosity and permeability before and after salting out were measured and analyzed comparatively.
开展了岩心渗流蒸发实验，对比分析了盐析前后岩心孔隙度和渗透率的变化情况。
The model simulates sodium flow in the steam generator as quasi-continuum. The model USES volume porosity, area permeability and distributed resistance to model the tubes and support plates.
假设为大孔隙多孔介质，模拟钠在蒸汽发生器内的流动，引入体积孔隙率，面渗透率和分布阻力来模拟管束、支撑板对钠流动的扰动。
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 numerical analysis method is presented to simulate the shrinkage porosity formation in steel castings on the basis of heat flow, interdendritic fluid flow and possible evolution of dissolved gases.
提出了预测铸钢件中缩松缺陷的数值方法，考虑了传热、枝晶间液相流动和气体析出等因素。
The study shows that the total drags acting on a hollow block are affected by the porosity in the same flow condition , that is, the bigger the porosity is, the smaller the drag force is.
实验研究表明，对于不同的空心块体，在相同的水流条件下，受到的水平拖曳力随块体的空心率影响较大，呈现空心率越大，水流拖曳力越小的变化规律。
This paper obtains the exact solutions for the unsteady radial flow equations of the slightly compressible liquid through a medium with triple-porosity by using the method of decomposition.
本文用分解的方法求得了有限封闭地层中三重介质弹性渗流的精确解。
The inter-porosity flow factor and the elastic storativity ratio determine the occurrence time and the degree of the inter-porosity flow.
窜流系数和裂缝弹性储容比的变化决定了窜流段发生的早晚和程度；
Dry flow agent can improve the porosity and the leveling of the powder, improve powder spraying, especially suitable for metallic and pearl powder system.
适量加入能提高粉末的疏松度及流平，改善喷粉时的吐粉、堵枪现象及提高死角上粉率；尤其适用于金属及珠光粉末体系。
This paper studies systematically the unsteady radial flow of a slightly compressible liquid through a medium with multiple -porosity by numerical simulation.
本文用数值模拟系统地研究了多重介质弹性径向渗流问题。
RNG turbulent model combining with VOF method, porosity method and wall function was used to simulate and research the flow around a spur-dike.
基于RNG紊流模型，采用VOF法、空度法和璧面函数法分别处理自由面、不规则边界和壁边界，对丁坝附近的水流进行了模拟和研究。
The storativity ratio and inter-porosity flow factor is just same as the newtonian fluid, and the effect of outer-boundary on transient pressure is different from that of newtonian fluid.
而弹性储容比和窜流系数的影响和普通三重介质相同，只是由于非牛顿流体的影响其“凹陷”的位置升高；外边界的影响也和牛顿流体的情况明显不同。
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。
The volume quality of top soil is increased and the soil porosity is reduced owing to compaction, so water flow downward difficultly and the amount of water vertical infiltration is reduced.
由于压实，增加了表层土壤的体积质量，降低了土壤孔隙度，水不易向下运动。
ATB150/ATB340 is a nonwoven polyester breather felt for oven cures. It is very drapable and has a high porosity allowing good air flow.
ATB150/ATB340是一种聚脂无纺布，它有很好的延伸性，并且透气。 用作复合材料的常温或烘箱成型之透气毡/吸胶毡。
ATB150/ATB340 is a nonwoven polyester breather felt for oven cures. It is very drapable and has a high porosity allowing good air flow.
ATB150/ATB340是一种聚脂无纺布，它有很好的延伸性，并且透气。 用作复合材料的常温或烘箱成型之透气毡/吸胶毡。
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