2 papers
physics.flu-dyn2021
The onset of zonal modes in two-dimensional Rayleigh-Bénard convection
Philip Winchester, Peter D. Howell, Vassilios Dallas
We study the stability of steady convection rolls in 2D Rayleigh--Bénard convection with free-slip boundaries and horizontal periodicity over twelve orders of magnitude in the Pran…
math.AP2015
Nematic equilibria on a two-dimensional annulus: defects and energies
Alexander H. Lewis, Peter D. Howell, Dirk G. A. L. Aarts +1
We study planar nematic equilibria on a two-dimensional annulus with strong and weak tangent anchoring, within the Oseen-Frank and Landau-de Gennes theories for nematic liquid crys…