scholarly journals Erosion onset of a cohesionless granular medium by an immersed impinging round jet

2017 ◽  
Vol 2 (3) ◽  
Author(s):  
Florian Brunier-Coulin ◽  
Pablo Cuéllar ◽  
Pierre Philippe
Keyword(s):  
Granular Medium ◽  
Round Jet

ROUND JET IN CROSS SHEAR FLOW

2012 ◽  
Vol 2 (4) ◽  
Author(s):  
Genrich R. Grek ◽  
Grigory V. Kozlov ◽  
Victor V. Kozlov ◽  
Yury A. Litvinenko ◽  
Maria V. Litvinenko
Keyword(s):  
Shear Flow ◽  
Round Jet

scholarly journals Under pressure: Hydrogel swelling in a granular medium

2021 ◽  
Vol 7 (7) ◽  
pp. eabd2711
Author(s):  
Jean-François Louf ◽  
Nancy B. Lu ◽  
Margaret G. O’Connell ◽  
H. Jeremy Cho ◽  
Sujit S. Datta
Keyword(s):  
Oil Recovery ◽  
Granular Medium ◽  
Granular Media ◽  
Three Dimensional ◽  
Osmotic Swelling ◽  
Widespread Adoption ◽  
Dry Soil ◽  
Hydrogel Swelling

Hydrogels hold promise in agriculture as reservoirs of water in dry soil, potentially alleviating the burden of irrigation. However, confinement in soil can markedly reduce the ability of hydrogels to absorb water and swell, limiting their widespread adoption. Unfortunately, the underlying reason remains unknown. By directly visualizing the swelling of hydrogels confined in three-dimensional granular media, we demonstrate that the extent of hydrogel swelling is determined by the competition between the force exerted by the hydrogel due to osmotic swelling and the confining force transmitted by the surrounding grains. Furthermore, the medium can itself be restructured by hydrogel swelling, as set by the balance between the osmotic swelling force, the confining force, and intergrain friction. Together, our results provide quantitative principles to predict how hydrogels behave in confinement, potentially improving their use in agriculture as well as informing other applications such as oil recovery, construction, mechanobiology, and filtration.

Sound Attenuation In A Coarse Granular Medium

1993 ◽  
Vol 162 (3) ◽  
pp. 529-535 ◽  
Author(s):  
D. Wu ◽  
Z.W. Qian ◽  
D. Shao
Keyword(s):  
Granular Medium ◽  
Sound Attenuation
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