4 papers
Searching for Invariant Solutions to Wall-Bounded Flows using Resolvent-Based Optimisation
Thomas Burton, Sean Symon, Davide Lasagna
We present a robust optimisation framework for computing invariant solutions of wall-bounded flows by recasting the Navier-Stokes equations as a variational problem as established…
Space-time nonlinear reduced-order modelling for unsteady flows
Xiaodong Li, Davide Lasagna
This work investigates projection-based Reduced-Order Models (ROMs) formulated in the frequency domain, employing a space-time basis constructed with Spectral Proper Orthogonal Dec…
Resolvent-Based Optimisation for Approximating the Statistics of a Chaotic Lorenz System
Thomas Burton, Sean Symon, Ati Sharma +1
We propose a novel framework for approximating the statistical properties of turbulent flows by combining variational methods for the search of unstable periodic orbits with resolv…
Linear models of strip-type roughness
D. Lasagna, G. Zampino, B. Ganapathisubramani
Prandtl's secondary flows of the second kind generated by laterally-varying roughness are studied using the linearised Reynolds-Averaged Navier-Stokes approach proposed in Zampino…