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- Alexander E. Lobkovsky, Ashish V. Orpe, RYAN MOLLOY, Arshad Kudrolli, Daniel H Rothman
- 2008

Motivated by examples of erosive incision of channels in sand, we investigate the motion of individual grains in a granular bed driven by a laminar fluid to give us new insights into the relationshipâ€¦ (More)

- Ashish V. Orpe, Devang V. Khakhar
- Physical review. E, Statistical, nonlinear, andâ€¦
- 2001

An experimental study of the flow of different materials (steel balls, glass beads, and sand) in quasi-two-dimensional rotating cylinders is carried out using flow visualization. The flow in theâ€¦ (More)

- Devang V. Khakhar, Ashish V. Orpe, Julio M. Ottino
- Advances in Complex Systems
- 2001

Granular surface flows are common in industrial practice and natural systems, however, theoretical description of such flows is at present incomplete. Two prototype systems involving surface flow areâ€¦ (More)

- Chris H. Rycroft, Ashish V. Orpe, Arshad Kudrolli
- Physical review. E, Statistical, nonlinear, andâ€¦
- 2009

We report a detailed comparison of a slow gravity-driven sheared granular flow with a discrete-element simulation performed in the same geometry. In the experiments, grains flow inside a silo with aâ€¦ (More)

- Ashish V. Orpe, Devang V. Khakhar
- Physical review letters
- 2004

The rheology of a granular shear flow is studied in a quasi-2D rotating cylinder. Measurements are carried out near the midpoint along the length of the surface flowing layer where the flow is steadyâ€¦ (More)

- Qing Xu, Ashish V. Orpe, Arshad Kudrolli
- Physical review. E, Statistical, nonlinear, andâ€¦
- 2007

We investigate the dynamics of a partially saturated grain-liquid mixture with a rotating drum apparatus. The drum is partially filled with the mixture and then rotated about its horizontal axis. Weâ€¦ (More)

- Ashish V. Orpe, Arshad Kudrolli
- Physical review letters
- 2007

We show that the velocity correlations in uniform dense granular flows inside a silo are similar to the hydrodynamic response of an elastic hard-sphere liquid. The measurements are made using aâ€¦ (More)

Surface granular flow, comprising granular material flowing on the surface of a heap of the same material, occurs in several industrial and natural systems. The rheology of such flow is investigatedâ€¦ (More)

- Amit Kunte, Pankaj Doshi, Ashish V. Orpe
- Physical review. E, Statistical, nonlinear, andâ€¦
- 2014

We show that the flow of granular material inside a two-dimensional flat bottomed hopper is altered significantly by having more than one exit orifice. For hoppers with small orifice widths,â€¦ (More)

We find in complementary experiments and event driven simulations of sheared inelastic hard spheres that the velocity autocorrelation function Ïˆ(t) decays much faster than tâˆ’3/2 obtained for a fluidâ€¦ (More)