Table 2 - uploaded by Soon Hoe - Chew
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ANOVA two-factor factorial test
Source publication
This paper presents a physical model designed to simulate the pore structure of nonwoven geotextiles. The upper part of the model consists of a series of brass rods uniformly or randomly spaced to simulate elongated fibers in the geotextile. The magnified nonwoven geotextile so modeled allows soil particles, modeled with plastic beads of various si...
Context in source publication
Context 1
... of factor B are considered as significant of F b is larger than F 3 defined as Table 2 summarizes the calculated F ratios of a number of configurations in this test. For these cases, factor A is chosen to be D b /D r , diameter of bead over diameter of rod, and factor B is chosen to be the number of layers of rods. ...
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Citations
... 6,23 Core experiments are well adopted to characterize filtration performance of viscoelastic fluids. 24, 25 Dehghanpour and Kuru 26 applied core experiments to study the rheological properties of viscoelasticity fluids on filtration loss. Their results indicated that the increase of the elastic properties of the polymer solution decreased the filtration loss. ...
We investigated the flow of viscoelastic surfactant (VES) solutions, an important type of fracturing fluids for unconventional hydrocarbon recovery, through a diverging–converging microfluidic channel that mimics realistic unit in porous media. Newtonian fluid and viscoelastic hydrolyzed polyacrylamide (HPAM) solution were used as control groups. We vary Deborah numbers (De) up to 61.2, and found that the flow patterns of HPAM and VES solutions become very different once De ≥ 6.12. This is attributed to different generation mechanisms of viscoelasticity, thus different responses to extensional rates at pore‐throats, for HPAM and VES solutions. It results in significantly smaller pressure drop of VES solutions through the microchannel compared to HPAM solution. It interprets higher filtration loss of VES solution than HPAM in core experiments and in field observations. The set‐up can be generalized as a prototype to effectively evaluate the filtration of fracturing fluids.
