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model with ultra-low permeability CUI Maolei1, 2, 3, DING Yunhong4, XUE Chengguo5, XU Xuan1, 2, LIU Xuewei4, YANG Zhengming4 (1. Institution of Porous Flow and Fluid Mechanics, Chinese Academy of Sciences...) Abstract: A large-scale natural sandstone physical model of ultra-low permeability was established, and a new method for studying seepage law of ultra-low permeability was proposed. Seepage curves measured......
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Abstract: An improved design method of pervious concrete was proposed to lower the deviation between the designed and actual porosity and maintain both mechanical property and permeability of pervious... structures; permeability Cite this article as: BA Ming-fang, QI Xin-yu, ZHENG Yu-hang, HUANG Guo-yang, HE Zhi-min, LIU Jun-zhe. Improved designed method of pervious concrete based on optimal volume ratio......
:1672-7207(2016)03-0977-07 Analysis of large-strain consolidation with non-Darcy flow and variable permeability coefficient LI Gang1, 2, ZHANG Jinli1, 2, YANG Qing1, 2, JIANG Mingjing3 (1. School of Civil... permeability coefficient based on large-strain consolidation theory. The consolidation process of clay foundation was analyzed by the program developed by the finite element equations. The influence......
, showing good agreement. The effect of permeability of porous media is discussed, a suggestion for choose permeability of porous media is made. The results show that an efficient method for the simulation... absorption; porous media; permeability 波浪载荷对于船舶和海洋结构物可能造成重大危害,对于深海采矿系统的布放作业来说,波浪的影响对布放的成功与否有着重要影响,在极端海况下,海浪可能导致布放缆绳等结构出现局部损伤,而瞬间增大的砰击压力可能传递到安装在采矿船上的布放装置,最终可能引起整个布放作业的失败.因此,需要研究预报适合布放作业操作海况下波浪行为的方法.实验室物理水槽的......
; dynamical disaster; stress field; permeability of coal; [全文内容正在添加中] ......
钒钛磁铁精矿粒度对烧结性能的影响何木光1,林千谷1,张义贤1(1.四川省攀枝花市攀枝花新钢钒公司炼铁厂)摘 要:开展了钒钛磁铁精矿粒度对烧结性能影响的研究,分析了精矿粒度逐步细化对烧结指标的影响.研究结果表明:随着精矿粒度变细,烧结混合料的制粒性能显著改善,料层透气性提高,垂直烧结速度增加了0.22~1.28 mm/min,但烧结矿的转鼓强度和成品率分别下降0.73%~3.29%和0.27%~1.21%,低温还原粉化性能变差.此次试验探索出了精矿粒度变粗对烧结矿产,质量的不利影响,提出了在目前攀钢烧结原料结构条......
针织结构对复合材料渗透率的影响研究 罗永康1,胡红1,曹瑞谦1 (1.东华大学纺织学院,上海,201620) 摘要:本文通过研究针织结构对流体渗透率的影响,探索了一种高渗透率的玻纤针织结构织物,用以取代常用的导流网等介质,改善了VARTM工艺中遗弃物对环境造成的不良影响,节省了原材料并降低了生产成本. 关键词:针织结构; VARTM; 复合材料; 渗透率; 高导流介质; knitting structure; VARTM; composite materials; permeability; high permeability medium; [全文内容正在添加中] ......
[J]. 中南大学学报(自然科学版),2021, 52(4): 1066-1075. Citation: ZHANG Sizong, WEN Zhi, LIU Xunliang, et al. Effects of particle shape on permeability and resistance coefficients of sinter packed bed[J]. Journal......
最大反射衰减为-29.3dB,低于-5dB的有效带宽为3.6GHz. 关键词:双复纤维; 纤维排布方式; 吸波性能; complex permittivity and permeability fiber; fiber arrangement; microwave absorption; [全文内容正在添加中] ......
