155 citations · 1.7k across the 71 of their papers we have counts for
77 papers
Oscillatory shear flows and a new 2D self-sustaining process
Theo A. Lewy, Rich R. Kerswell
A new self-sustaining process (SSP) is identified in an oscillating spatially-homogeneous shear flow using a nonlinear Kelvin mode model. This SSP consists of energetic spanwise-in…
Non-normal weakly nonlinear analysis: asymptotic consistency and non-universality
Matthew McCormack, Gregory P. Chini, Rich R. Kerswell
Non-normality can induce large transient growth in linearly stable systems. Determining whether this growth triggers a transition in the underlying nonlinear system, however, requi…
Significant heat transfer enhancement via polymer additives in two-dimensional sheared convection
Guanhan Li, Lu Zhu, Rich. R. Kerswell
Heat dissipation is critical in modern engineering systems. Polymer additives offer a potential route to improve fluid-based cooling. Here, we study elasticity-enhanced heat transf…
On the essential structure of exact traveling-wave solutions in viscoelastic flow
Lu Zhu, Rich. R. Kerswell
We examine elastic travelling-wave (`arrowhead') solutions in a viscoelastic, unidirectionally body-forced flow, focusing on their existence and morphological changes as the Weisse…
Stable stratification enhances transient growth in streaky shear flows
Will Oxley, Rich Kerswell
Recent work has found that the well-known `lift-up' mechanism is not important for, and may even inhibit, the transient growth possible on streaky wall-bounded shear flows which is…
Conditioning on PDE Parameters to Generalise Deep Learning Emulation of Stochastic and Chaotic Dynamics
Ira J. S. Shokar, Rich R. Kerswell, Peter H. Haynes
We present a deep learning emulator for stochastic and chaotic spatio-temporal systems, explicitly conditioned on the parameter values of the underlying partial differential equati…