Monem Ayaz's research while affiliated with University of Oslo and other places

Publications (3)

Article
Full-text available
We experimentally and numerically study the influence of gravity and finite-size effects on the pressure-saturation relationship in a given porous medium during slow drainage. The effect of gravity is systematically varied by tilting the system relative to the horizontal configuration. The use of a quasi two-dimensional porous media allows for dire...
Article
Full-text available
An experimental observation of the structuring of a granular suspension under the progress of a gas/liquid meniscus in a narrow tube is reported here. The granular material is moved and compactifies as a growing accumulation front. The frictional interaction with the confining walls increases until the pore capillary entry pressure is reached. The...
Article
Full-text available
We study experimentally the flow and patterning of a granular suspension displaced by air inside a narrow tube. The invading air-liquid interface accumulates a plug of granular material that clogs the tube due to friction with the confining walls. The gas percolates through the static plug once the gas pressure exceeds the pore capillary entry pres...

Citations

... 2 of 16 notable role (Ayaz et al., 2020;Kuang et al., 2011;Luo et al., 2020). Moreover, there are now published datasets consisting of stacks of many tomograms taken at different elevations of the sample (Jackson, 2019) resulting in very tall images. ...
... Characteristic experimental results for these systems in the Hele-Shaw cell [51,54,55] consist in beautiful labyrinthine patterns, shown in figure (1.20.a), which are still under consideration for their interesting diffusion mechanism [56]. The capillary experiment results in the formation of plug and gap patterns [52,57,58], shown in figure (1.20.b), which will be the interest of this study, and for which a schematic view is given in figure (1.19.c). ing a stick-slip behaviour, increasing with the plug length and decreasing rapidly when it reaches the minimum pore pressure P * pore . ...
... Characteristic experimental results for these systems in the Hele-Shaw cell [51,54,55] consist in beautiful labyrinthine patterns, shown in figure (1.20.a), which are still under consideration for their interesting diffusion mechanism [56]. The capillary experiment results in the formation of plug and gap patterns [52,57,58], shown in figure (1.20.b), which will be the interest of this study, and for which a schematic view is given in figure (1.19.c). ing a stick-slip behaviour, increasing with the plug length and decreasing rapidly when it reaches the minimum pore pressure P * pore . ...