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Faculty of Mathematics

 

My work generally uses numerical simulations, bifurcation analysis and linear stability techniques to investigate fluid stability relating to:

  • Elastic turbulence in viscoelastic fluids (both concentrated and dilute regimes). 
  • Rayleigh-Bénard and internally heated convection.
  • Newtonian shear flows and the SSP.

Publications

Elastic Turbulence in Highly Entangled Polymers and Wormlike Micelles
TA Lewy, SM Fielding, PD Olmsted, RR Kerswell
– Physical Review Letters
(2026)
136,
104001
Revisiting two-dimensional viscoelastic Kolmogorov flow: a centre-mode-driven transition
T Lewy, RR Kerswell
– Journal of Fluid Mechanics
(2025)
1007,
a55
The polymer diffusive instability in highly concentrated polymeric fluids
T Lewy, R Kerswell
– Journal of Non-Newtonian Fluid Mechanics
(2024)
326,
105212

Research Group

High-Reynolds-Number Fluid Flow

Room

H2.01