Magneto-Stokes Flow in a Shallow Free-Surface Annulus
We analyse magneto-Stokes flow in the cylindrical-annular geometry of the Taylor-Couette cell, developing a compplete analytical solution that we verify in laboratory experiments and direct numerical simulations in Dedalus. We also investigate optimal parameters for enhanced mixing devices.
Oct 1, 2024
Fluid dynamics alters liquid–liquid phase separation in confined aqueous two-phase systems
We model temperature-induced phase separation in aqueous polymers used to manufacture Janus droplet microparticles at UCLA startup Partillion Bioscience. Fluid flow and buoyancy greatly alters separation speed, as well as equilibrium droplet shapes. We propose channel flow as a cheap method to accelerate separation tenfold.
Dec 5, 2023
Double-Diffusive Layer and Meltwater Plume Effects on Ice Face Scalloping in Phase-Change Simulations
We simulate turbulent double-diffusive plumes near a vertical ice face and observe spontaneous generation of scalloped topography.
Sep 18, 2023
Orthogonal signed-distance coordinates and vector calculus near evolving curves and surfaces
An elementary derivation of a convenient and elegant coordinate systems for neighbourhoods of curves and surfaces.
May 11, 2023
On the stability of shocks in isothermal black hole accretion discs
We add infinitesimal dissipation to show uniqueness of isothermal shocks in black hole accretion disks. But these shocks are only stable in a much narrower range parameter space than previously believed.
Jun 12, 2022
Aspect Ratio Affects Iceberg Melting
We analyse the influence of geometry on iceberg melting in a combination of laboratory experiment and direct numerical simulation, proposing a new geometry-aware parameterisation of iceberg melting.
Aug 29, 2021
Topography generation by melting and freezing in a turbulent shear flow
We simulate turbulent three-dimensional flow beneath an ice layer and observe spontaneous stratification-dependent generation of topography.
Mar 12, 2021
Improving convergence of volume penalised fluid-solid interactions
We derive higher-order accurate volume-penalty models with no added implementation cost, and verify their accuracy in several benchmark problems in Dedalus.
Oct 21, 2020
Improved phase-field models of melting and dissolution in multi-component flows
We develop the first second-order phase-field model to combine melting and dissolution in multi-component flows, and validate our asymptotics against a suite of numerical benchmarks.
Jun 30, 2020
Bistability in Rayleigh-Bénard convection with a melting boundary
We demonstrate bistability in Rayleigh-Benard convection by considering a melting upper boundary.
Feb 5, 2020