搜索结果: 1-15 共查到“工学 Pore”相关记录23条 . 查询时间(0.093 秒)
Pore Types and Quantitative Evaluation of Pore Volumes in the Longmaxi Formation Shale of Southeast Chongqing, China
southeast Chongqing Longmaxi Formation shale total porosity organic porosity inorganic porosity
2018/4/10
The common microscale to nanoscale pore types were introduced and divided into organic and inorganic pores to estimate their contributions to porosity in the Lower Silurian Longmaxi Formation shale of...
Visualizing complex pore structure and fluid flow in porous media using 3D printing technology and LBM simulation
3D printing Pore structure LBM Visualization
2018/3/23
Pore structures of porous media and properties of fluid flow are key factors for the study of non-Darcy groundwater flow. However, it is difficult to directly observe pore structures and flow properti...
On the pore-scale mechanisms leading to brittle and ductile deformation behavior of crystalline rocks
crystal plasticity deformation mechanisms finite element heterogeneity microfracture
2015/7/1
Deformation mechanisms at the pore scale are responsible for producing large strains in porous rocks. They include cataclastic flow, dislocation creep, dynamic recrystallization, diffusive mass transf...
仓内谷物通风干燥孔道网络数值模拟与验证（Pore Network Numerical Simulation and Experiment on Drying of Corn Material in Bin）
谷物 干燥 模拟 孔道网络
2009/11/24
利用前已建立的仓内谷物通风干燥孔道网络模型，对玉米热风干燥实验过程进行了数值模拟，并将模拟结果与实验数据进行了比较。结果表明：该模型可有效模拟谷物的干燥过程；干燥时玉米颗粒平均温度与玉米堆孔隙气相平均温度之间存在明显的差别，后者始终比前者温度要高，故以往将谷物与孔隙气相温度不加区分，视为同一值的做法是不妥的；配位数对干燥的影响十分显著，其值越大，物料干燥越快；当物料含杂、配位数值较小时，干燥仓内会...
分形多孔介质孔道网络模型的构建（Construction of Pore Network Model of Fractal Porous Media）
干燥 多孔介质 孔道网络 分形
2009/11/24
采用压汞试验获得实际多孔介质的微观结构参数。以冻干马铃薯为例计算了孔隙分形维数，结果表明冻干马铃薯结构具有显著的分形特性。运用位似变换理论、分形理论、Voronoi图以及马铃薯的特征参数等，构建出与马铃薯结构参数相对应的二维分形孔道网络模型。构建的网络模型考虑了影响多孔介质干燥的孔道微细结构特征，模型参数能够很好地反映多孔物料的微观结构，且获得了合理的分形维数。
Effects of Pore Size of Ru-Al2O3 Catalysts Prepared by Alkoxide Method on Fischer-Tropsch Reaction
Alkoxide method Fischer-Tropsch reaction Particle size Pore size
2009/8/4
10 wt%Ru-Al2O3 catalysts with uniform pore sizes in the range of 3-7 nm were prepared by the alkoxide method by changing the added amount of H2O highly diluted with butanol at the gelation stage of s...
Effects of Pore Size of Ru-SiO2 Catalysts Prepared by Alkoxide Method on Fischer-Tropsch Reaction
Alkoxide method Fischer-Tropsch reaction Particle size
2009/7/28
Uniform pore sizes of 10 wt%Ru-SiO2 catalysts prepared by the alkoxide method were varied in the range of 4-8 nm, by adding formamide (FA) at the sol-gel preparation stage. The prepared catalysts were...
Effects of Asphaltene Content in Atmospheric Residue and Mean Pore Size of Catalyst on Initial Deactivation of Hydrodesulfurization Catalyst
Hydrotreating Atmospheric residue Catalyst deactivation rate
2009/7/24
(HDS) of atmospheric residue (AR) over Ni-Co-Mo catalysts supported on γ-alumina was carried out to examine the effect of alumina pore size on HDS activity, hydrodemetallization (HDM) activity and ini...
Effects of Loading Order of Catalyst with Different Pore Structures in Residue Hydrotreating Process
Atmospheric residue Hydrotreating Catalyst loading order Sludge
2009/7/24
The activities of two combinations of three catalysts with different mean pore sizes were examined in the residue hydrotreating process. Packing of catalysts in the order of large to small pores enha...
Estimation of Coke and Metal Deposition Distribution within Hydrodesulfurization Catalyst Pore at the Last Stage of Operation
Hydrodesulfurization Model equation Thiele modulus Metal distribution estimation
2009/7/24
Hydrodesulfurization (HDS) of atmospheric residue (AR) carried out over Ni-Mo or Co-Mo catalyst requires a sudden increase in the reaction temperature for the desired desulfurization at the end of op...
Bimodal Porous Silica Prepared by Pore-filling of Silica Sol
Bimodal pore structure BET surface area Pore volume
2009/7/23
A silica with bimodal pore structures was prepared by a simple method of introducing silica sol into the controlled large pores of original silica gel. The pores of the bimodal pore silica were distr...
Effect of the Pore Size of Microfilters in Supercritical CO2 Bubbling on the Dissolved CO2 Concentration
supercritical CO2 bubbling the concentration of dissolved CO2 pore size of microfilters
2009/5/20
The effect of the pore size of microfilters installed in a supercritical (SC-) CO2 bubbling device on the concentration of CO2 dissolved in the solution was investigated. Dissolved CO2 concentration i...
Effect of Water Contained in Pore on UVR Shielding and See-through Properties of Woven Fabrics
UVR shielding rate Pore Moisture regain See-through property
2009/5/5
In the previous paper, we studied the ultraviolet ray shielding rate for cotton woven fabrics during the drying process from the high moisture regain. We found that the UVR shielding rate increased ...
Simple preparation of silica and alumina with a hierarchical pore system via the dual-templating method
mesoporous material macroporous material silica alumina
2010/1/19
Silica and alumina with macro-meso-type hierarchical pore systems are synthesized by dual templating using both surfactants and polystyrene (PS) spheres. After calcination, scanning electron microscop...
Modeling of the Relationship Between Pore Size Distribution and Thickness of Ceramic MF Membrane
modeling pore structure pore size distribution thickness
2009/4/7
The pore size distribution (PSD) measured by the gas bubble point (GBP) method of ceramic microfiltration (MF) membranes prepared by suspension technique was found to be significantly influenced by t...