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)

Recent Publications

• Krishnaraj, K. P. (2021). 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.
• Krishnaraj, K. P. (2020). Spatial structure of disordered media: Unravelling the mechanical significance of disorder in granular materials. arXiv preprint arXiv:2003.02797.
• Krishnaraj, K. P., & Nott, P. R. (2020). Coherent force chains in disordered granular materials emerge from a percolation of quasilinear clusters. Physical review letters, 124(19), 198002.
• Krishnaraj, K. P., & Nott, P. R. (2016). A dilation-driven vortex flow in sheared granular materials explains a rheometric anomaly. Nature communications, 7, 10630.