3 papers
cs.CE2025
Reduced order modelling of Hopf bifurcations for the Navier-Stokes equations through invariant manifolds
Alessio Colombo, Alessandra Vizzaccaro, Cyril Touzé +3
This work introduces a parametric simulation-free reduced order model for incompressible flows undergoing a Hopf bifurcation, leveraging the parametrisation method for invariant ma…
physics.flu-dyn2025
Bistable flow dynamics of airfoil stall under varying angle of attack: A stochastic model with multiplicative noise
Edouard Boujo, Ivan Kharsansky Atallah, Luc R. Pastur
We focus on the intermittent bistable stall dynamics of an airfoil under varying angle of attack. We propose a one-dimensional Langevin equation where the stochastic forcing depend…
physics.flu-dyn2025
A mixing length model for arbitrary geometry: the case of parallel flows
Vincent Labarre, Christophe Josserand, Martine Le Berre +3
We present a phenomenological model for the mixing length used in turbulence models. It has the advantage of naturally accounting for the object's geometry while satisfying the sta…