Research Interest
- Flow, structure and stress transmission in granular media
- Structure and transport in spatial networks
Education
- B.Tech., Anna University, Chennai, 2010
- M.S. and Ph.D., Indian Institute of Science, Bangalore, 2019
Research Overview
Disordered media like granular materials are a familiar form of matter that we encounter
in our daily lives, prevalent in the natural world and important in the context of geomechanics
and material processing. Despite their ubiquity and significance, the mechanics of static and
dense flowing granular media are complex and challenging to predict. We seek tools and ideas
from diverse fields like complex network analysis and percolation theory that enable us to
study broad class of disordered media like foams, dense suspensions, emulsions and even biological cells.
Awards
- DST INSPIRE Faculty Award (2020)
- APS-DFD Enabling Grant (2016)
Work Experience
- DST INSPIRE Faculty, IIT Palakkad (2021-2022)
- Research Associate, IISc Bangalore (2018-2019, 2020-2021)
- Post-Doctoral Researcher, Samsung Research Institute, Bangalore (2019-2020)
- Engineer, New Product Development, Britannia Industries R&D Centre, Chennai (2010-2011)
Publications
- K. P. Krishnaraj, P. R. Nott, The stress in static granular media under gravity, Journal of Fluid Mechanics, Volume 980, (2024).
- K. P. Krishnaraj, Emergence of preferred subnetwork for correlated transport in spatial networks: On the ubiquity of force chains in dense disordered granular materials, arxiv preprint arXiv:2102.07130 (2021).
- K. P. Krishnaraj, Spatial structure of disordered media: Unravelling the mechanical significance of disorder in granular materials, arxiv preprint arXiv:2003.02797 (2020).
- K. P. Krishnaraj, P. R. Nott, Coherent force chains in disordered granular materials emerge from a percolation of quasilinear clusters, Physical Review Letters, 124, 198002 (2020).
- K. P. Krishnaraj, P. R. Nott, A dilation-driven vortex flow in sheared granular materials explains a rheometric anomaly, Nature Communications, 7, 10630 (2016).
