3 papers
cond-mat.soft2019
Effective drag of a rod in fluid-saturated granular beds
Benjamin Allen, Arshad Kudrolli
We measure the drag encountered by a vertically oriented rod moving across a sedimented granular bed immersed in a fluid under steady-state conditions. At low rod speeds, the prese…
cond-mat.soft2018
Granular bed consolidation, creep and armoring under subcritical fluid flow
Benjamin Allen, Arshad Kudrolli
We show that a freshly sedimented granular bed settles and creeps forward over extended periods of time under an applied hydrodynamic shear stress, which is below the critical valu…
cond-mat.soft2018
Testing constitutive relations by running and walking on cornstarch and water suspensions
Shomeek Mukhopadhyay, Benjamin Allen, Eric Brown
The ability of a person to run on the surface of a suspension of cornstarch and water has fascinated scientists and the public alike. However, the constitutive relation obtained fr…