8 papers
Statistical orientation and distribution of columnar ice crystals in turbulent flows
A. Pumir, M. Z. Sheikh, K. Gustavsson +3
We study the motion of columnar ice crystals that form in clouds over a range of low temperature. Our focus here is on elongated ice crystals, which are smaller than the size of th…
Fluid-inertia torques from particle-shape symmetry
L. Sundberg, F. Candelier, N. Fintzi +4
Numerical simulation of particle motion in fluids at low particle Reynolds numbers is often based on empirical force and torque models obtained by fitting force and torque from ab-…
A Model Intercomparison Study of Mixed-Phase Clouds in a Laboratory Chamber
Aaron Wang, Sisi Chen, Steve Krueger +12
Mixed-phase clouds, composed of supercooled liquid droplets and ice crystals, play a critical role in weather and climate systems. Their complex microphysical interactions and coup…
Benchmarking Turbulence Models to Represent Cloud-Edge Mixing
Johannes Kainz, Nikitabahen N. Makwana, Bipin Kumar +5
Considering turbulence is crucial to understanding clouds. However, covering all scales involved in the turbulent mixing of clouds with their environment is computationally challen…
Smart navigation of a gravity-driven glider with adjustable centre-of-mass
X. Jiang, J. Qiu, K. Gustavsson +2
Artificial gliders are designed to disperse as they settle through a fluid, requiring precise navigation to reach target locations. We show that a compact glider settling in a visc…
Transport barriers for microswimmers in unsteady flow
L. Storm, J. Qiu, K. Gustavsson +1
Certain flow structures trap active microorganisms over extended periods, impacting mortality and growth by inhibiting foraging, exploration, and predator evasion. We show that tra…