8 papers
Shape matters: Body dynamics underlies efficient jumping
Marc Suñé, Lucas Selva, Cristóbal Arratia +2
Many small animals, particularly insects, use power-amplification to generate rapid motions, such as jumping, that would otherwise be impossible given the standard power density of…
Stochastic Lorenz dynamics and wind reversals in Rayleigh-Bénard Convection
Yanni Bills, J. S. Wettlaufer
The Lorenz equations [1] are a severe Galerkin-truncation of the Oberbeck-Boussinesq (OB) equations describing Rayleigh-Bénard convection (RBC). Here we examine the mathematical c…
Stochastic coupling of climate variables and ice volume over the Late Pleistocene glacial cycles
Pijush Patra, Ludovico T. Giorgini, J. S. Wettlaufer
Understanding the interactions between ice sheets and global climate forcings over geological timescales is essential for projecting their future. Previous studies have highlighted…
Accelerated first-passage dynamics in a non-Markovian feedback Ornstein--Uhlenbeck process
Francesco Coghi, Romain Duvezin, John S. Wettlaufer
We study the first-passage dynamics of a non-Markovian stochastic process with time-averaged feedback, which we model as a one-dimensional Ornstein--Uhlenbeck process wherein the p…
Electric field effects on the collision efficiency of uncharged water droplets in a linear flow
Pijush Patra, Anubhab Roy, J. S. Wettlaufer
We study the dynamics of collisions between a pair of uncharged conducting droplets under the influence of a uniaxial compressional flow and an external electric field. The near-fi…
Mid-latitude interactions expand the Hadley circulation
W. Moon, J. S. Wettlaufer
The Hadley circulation describes a planetary-scale tropical atmospheric flow, which has a major influence on climate. Contemporary theoretical understanding is based upon angular m…