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- 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)

- Kimberly M. Hill, Devang V. Khakhar, James F. Gilchrist, Joseph J. McCarthy, Julio M. Ottino
- Proceedings of the National Academy of Sciencesâ€¦
- 1999

An important industrial problem that provides fascinating puzzles in pattern formation is the tendency for granular mixtures to de-mix or segregate. Small differences in either size or density leadâ€¦ (More)

- Devang V. Khakhar, Joseph J. McCarthy, Julio M. Ottino
- Chaos
- 1999

Mixing of granular solids is invariably accompanied by segregation, however, the fundamentals of the process are not well understood. We analyze density and size segregation in a chute flow ofâ€¦ (More)

Granular materials segregate. Small differences in either size or density lead to flow-induced segregation, a complex phenomenon without parallel in fluids. Modeling of mixing and segregationâ€¦ (More)

We consider the mixing of similar, cohesionless granular materials in quasi-two-dimensional rotating containers by means of theory and experiment. A mathematical model is presented for the flow inâ€¦ (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)

Particulate systems have proven difficult to probe experimentally in many instances. Simulations of granular flows, and mixing flows in particular, provide a useful means of studying particulateâ€¦ (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)

- Julio M. Ottino, Devang V. Khakhar
- Chaos
- 2002

There are many systems where interaction among the elementary building blocks-no matter how well understood-does not even give a glimpse of the behavior of the global system itself. Characteristicâ€¦ (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)