Imperial College London


Faculty of Natural SciencesDepartment of Mathematics

Senior Teaching Fellow in Applied Mathematics







6M20Huxley BuildingSouth Kensington Campus






My research interests focus on complex fluids and complex systems. Recent/ongoing projects include:

  • Linear and nonlinear stability of viscoelastic shear flows
  • Influence of superhydrophobic surfaces on channel flow of shear-thinning fluids
  • Classification of bots and analysis of their influence on Twitter
  • Waves and turbulence in simulated pedestrian motion
  • Abstract-based automated identification of multidisciplinary research


I teach two classes in the Mathematics Department:

Network Science: an elective for 2nd-year students

Scientific Computation: an elective for 3rd-year and master's students



Ray PK, Bouvier D, Papageorgiou DT, 2023, Flow of shear-thinning liquids in channels with superhydrophobic surfaces, Journal of Non-newtonian Fluid Mechanics, Vol:319, ISSN:0377-0257, Pages:1-16

Vigna-Gómez A, Murillo J, Ramirez M, et al., 2023, Design and analysis of tweet-based election models for the 2021 Mexican legislative election, Epj Data Science, Vol:12, ISSN:2193-1127, Pages:1-17

Sharma A, Ray PK, Papageorgiou DT, 2019, Dynamics of gravity-driven viscoelastic films on wavy walls, Physical Review Fluids, Vol:4, ISSN:2469-990X, Pages:063305-1-063305-26

Ray PK, Hauge J, Papageorgiou D, 2017, Nonlinear interfacial instability in two-fluid viscoelastic Couette flow, Journal of Non-newtonian Fluid Mechanics, Vol:251, ISSN:0377-0257, Pages:17-27

Ray PK, Zaki TA, 2015, Absolute/convective instability of planar viscoelastic jets, Physics of Fluids, Vol:27, ISSN:1070-6631

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