The Relationship between Matrix Grain Size Distribution and Permeability of Porous Media

2020 ◽  
Author(s):  
R. Masumura ◽  
H. Mikada ◽  
J. Takekawa
Keyword(s):  
Grain Size ◽  
Porous Media ◽  
Size Distribution ◽  
Grain Size Distribution ◽  
The Relationship

Porous media grain size distribution and hydrodynamic forces effects on transport and deposition of suspended particles

2017 ◽  
Vol 53 ◽  
pp. 161-172 ◽  
Author(s):  
Nasre-Dine Ahfir ◽  
Ahmed Hammadi ◽  
Abdellah Alem ◽  
HuaQing Wang ◽  
Gilbert Le Bras ◽  
...  
Keyword(s):  
Grain Size ◽  
Porous Media ◽  
Size Distribution ◽  
Grain Size Distribution ◽  
Suspended Particles ◽  
Hydrodynamic Forces

The Effect of Grain Size Distribution on the Mechanical Properties of Nanometals

2008 ◽  
Vol 140 ◽  
pp. 185-190 ◽  
Author(s):  
T.B. Tengen ◽  
Tomasz Wejrzanowski ◽  
R. Iwankiewicz ◽  
Krzysztof Jan Kurzydlowski
Keyword(s):  
Mechanical Properties ◽  
Grain Size ◽  
Flow Stress ◽  
Size Distribution ◽  
Grain Size Distribution ◽  
Deformation Mechanisms ◽  
Average Grain Size ◽  
Significant Interest ◽  
Size Dispersion ◽  
The Relationship

Predicting the properties of a material from knowledge of the internal microstructures is attracting significant interest in the fields of materials design and engineering. The most commonly used expression, known as Hall-Petch Relationship (HPR), reports on the relationship between the flow stress and the average grain size. However, there is much evidence that other statistical information that the grain size distribution in materials may have significant impact on the mechanical properties. These could even be more pronounced in the case of grains of the nanometer size, where the HPR is no longer valid and the Reverse-HPR is more applicable. This paper proposes a statistical model for the relationship between flow stress and grain size distribution. The model considered different deformation mechanisms and was used to predict mechanical properties of aluminium and copper. The results obtained with the model shows that the dispersion of grain size distribution plays an important role in the design of desirable mechanical properties. In particular, it was found that that the dependence of a material’s mechanical properties on grain size dispersion also follows the HPR to Inverse-HPR type of behaviour. The results also show that copper is more sensitive to changes in grain size distribution than aluminium.

scholarly journals The Effect of Grain Size Distribution on Nonlinear Flow Behavior in Sandy Porous Media

2017 ◽  
Vol 120 (1) ◽  
pp. 37-66 ◽  
Author(s):  
Jan H. van Lopik ◽  
Roy Snoeijers ◽  
Teun C. G. W. van Dooren ◽  
Amir Raoof ◽  
Ruud J. Schotting
Keyword(s):  
Grain Size ◽  
Porous Media ◽  
Size Distribution ◽  
Grain Size Distribution ◽  
Flow Behavior ◽  
Nonlinear Flow ◽  
Nonlinear Flow Behavior

scholarly journals Study of the Relationship between some Physical Properties of Selected Soils in Babylon, Central Iraq

2021 ◽  
Vol 54 (2D) ◽  
pp. 155-164
Author(s):  
Muhsen O. Khalaf
Keyword(s):  
Grain Size ◽  
Physical Properties ◽  
Size Distribution ◽  
Grain Size Distribution ◽  
Dry Density ◽  
Silty Clay ◽  
Maximum Dry Density ◽  
Engineering Structures ◽  
Different Depths ◽  
The Relationship

The research is based on five selected soil sites in Babylon, Iraq, and aims to find the relationship between the physical properties of the soil. Where five samples were taken at different depths with a description of the soil for them in the fieldwork stage. As for the laboratory investigations phase, it included exploratory grain size distribution and atterberg limits to find plasticity and inspecting the maximum dry density. It was found through these tests that the soil is clay with low plasticity, except the fourth and fifth samples, as it is silty clay with low plasticity. Soil efficiency for all samples is Inactive. The relationship between the physical properties depends on the grain size distribution characteristic, as it is a function of the rest of the properties. It was also found that the percentage of sand in clay soils increases the maximum dry density in them so that 20-30% of the form and the remainder do not exceed fine sizes (silt and clay), and with acceptable plasticity that is important in the field of using the soil for backfilling purposes under the foundations for engineering structures and roads.

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