• 2980 Citations
19942019
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Personal profile

Research Interests

Professor Umbanhowar's research in granular materials examines the interaction of legged devices and animals with unconsolidated substrates; the dependence of drag force and penetration resistance on granular material state and intruder geometry and kinematics; segregation, mixing, and flow in shaken, tumbled, fluidized, and stirred granular ensembles; and pattern formation and its connection to continuum theories of discrete particulate systems. Another related area of interest is motion control and self assembly/organization through vibrational manipulation of contact interactions mediated by friction and impact.

Education/Academic qualification

PhD, University of Texas at Austin

… → 1996

MS, Boston University

… → 1991

BA, Carleton College

… → 1987

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Grants 2000 2019

Research Output 1994 2019

Continuum modeling of granular segregation during hopper discharge

Xiao, H., Fan, Y., Jacob, K. V., Umbanhowar, P., Kodam, M., Koch, J. F. & Lueptow, R. M., Jan 16 2019, In : Chemical Engineering Science. 193, p. 188-204 17 p.

Research output: Contribution to journalArticle

Hoppers
Finite difference method
Granular materials
Advection
Kinematics

Asymmetric concentration dependence of segregation fluxes in granular flows

Jones, R. P., Isner, A. B., Xiao, H., Ottino, J. M., Umbanhowar, P. & Lueptow, R. M., Sep 1 2018, In : Physical Review Fluids. 3, 9, 094304.

Research output: Contribution to journalArticle

Granular Flow
Segregation
Fluxes
Particle size
Particle Size
1 Citations
continuum modeling
Segregation
chutes
Continuum
Advection

Effect of pressure on segregation in granular shear flows

Fry, A. M., Umbanhowar, P., Ottino, J. M. & Lueptow, R. M., Jun 27 2018, In : Physical Review E. 97, 6, 062906.

Research output: Contribution to journalArticle

Granular Flow
Segregation
Shear Flow
shear flow
beds

Persistent structures in a three-dimensional dynamical system with flowing and non-flowing regions

Zaman, Z., Yu, M., Park, P. P., Ottino, J. M., Lueptow, R. M. & Umbanhowar, P., Dec 1 2018, In : Nature communications. 9, 1, 3122.

Research output: Contribution to journalArticle

dynamical systems
Dynamical systems
folding
Stretching
Fluids