Grants per year
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.
Expertise related to UN Sustainable Development Goals
In 2015, UN member states agreed to 17 global Sustainable Development Goals (SDGs) to end poverty, protect the planet and ensure prosperity for all. This person’s work contributes towards the following SDG(s):
Education/Academic qualification
PhD, University of Texas at Austin
… → 1996
MS, Boston University
… → 1991
BA, Carleton College
… → 1987
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Collaborations and top research areas from the last five years
Recent external collaboration on country/territory level. Dive into details by clicking on the dots or
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GOALI: Segregation and Mixing of Cohesive Particles
Lueptow, R. M. (PD/PI) & Umbanhowar, P. (Co-PD/PI)
9/1/24 → 8/31/27
Project: Research project
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GOALI: Fine Particle De-Mixing in Granular Flows
Lueptow, R. M. (PD/PI), Lueptow, R. M. (PD/PI), Lueptow, R. M. (PD/PI), Umbanhowar, P. (Co-PD/PI), Umbanhowar, P. (Co-PD/PI) & Umbanhowar, P. (Co-PD/PI)
6/1/22 → 5/31/26
Project: Research project
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GOALI: Flow driven segregation at the particle level
Lueptow, R. M. (PD/PI) & Umbanhowar, P. (Co-PD/PI)
10/1/19 → 9/30/24
Project: Research project
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Unlocking Efficiencies in Earthmoving for Future Infrastructure: Modeling Plowing and Cutting Processes in Soils
Hambleton, J. P. (PD/PI) & Umbanhowar, P. (Co-PD/PI)
9/1/17 → 8/31/19
Project: Research project
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NRI: Collaborative Research:Integrating Physics Models and Control Methodologies for Enhanced Legged Locomotion on Yielding Terrain
Umbanhowar, P. (PD/PI) & Lynch, K. M. (Co-PD/PI)
NASA Lyndon B. Johnson Space Center
7/27/15 → 7/26/20
Project: Research project
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Efficient, Responsive, and Robust Hopping on Deformable Terrain
Lynch, D. J., Pusey, J. L., Gart, S. W., Umbanhowar, P. B. & Lynch, K. M., 2025, In: IEEE Transactions on Robotics. 41, p. 782-800 19 p.Research output: Contribution to journal › Article › peer-review
Open Access -
Improved velocity-Verlet algorithm for the discrete element method
Vyas, D. R., Ottino, J. M., Lueptow, R. M. & Umbanhowar, P. B., May 2025, In: Computer Physics Communications. 310, 109524.Research output: Contribution to journal › Article › peer-review
Open Access -
Lift and drag forces on a moving intruder in granular shear flow
He, H., Zhang, Q., Ottino, J. M., Umbanhowar, P. B. & Lueptow, R. M., Mar 25 2025, In: Journal of fluid Mechanics. 1008, A5.Research output: Contribution to journal › Article › peer-review
Open Access -
Erratum: Particle capture in a model chaotic flow [Phys. Rev. E 104, 064203 (2021)
Wang, M., Ottino, J. M., Lueptow, R. M. & Umbanhowar, P. B., Sep 1 2024, In: Physical Review E. 110, 3-2, p. 39902 1 p.Research output: Contribution to journal › Comment/debate › peer-review
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General model for segregation forces in flowing granular mixtures
Duan, Y., Jing, L., Umbanhowar, P. B., Ottino, J. M. & Lueptow, R. M., Jul 29 2024, In: Journal of fluid Mechanics. 989, A17.Research output: Contribution to journal › Article › peer-review
Open Access
Datasets
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Replication data for: Cassiopeia A (DHT14)
Ungerechts, H. (Creator), Umbanhowar, P. (Creator) & Thaddeus, P. (Creator), Harvard Dataverse, Jul 18 2011
DOI: 10.7910/dvn/ft2meo, https://dataverse.harvard.edu/citation?persistentId=doi:10.7910/DVN/FT2MEO
Dataset
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Supplementary material from "Continuum modelling of segregating tridisperse granular chute flow"
Deng, Z. (Contributor), Umbanhowar, P. B. (Creator), Ottino, J. M. (Creator) & Lueptow, R. M. (Creator), figshare, 2018
DOI: 10.6084/m9.figshare.c.4028617, https://figshare.com/collections/Supplementary_material_from_Continuum_modelling_of_segregating_tridisperse_granular_chute_flow_/4028617
Dataset