35 citations · 56 across the 3 of their papers we have counts for
8 papers
Periodic Shadowing Sensitivity Analysis of Chaotic Systems
Davide Lasagna, Ati Sharma, Johan Meyers
The sensitivity of long-time averages of a hyperbolic chaotic system to parameter perturbations can be determined using the shadowing direction, the uniformly-bounded-in-time solut…
Compressible Invariant Solutions In Open Cavity Flows
J. Javier Otero, Ati S. Sharma, Richard D. Sandberg
A family of compressible exact periodic solutions is reported for the first time in an open cavity flow setup. These are found using a novel framework which permits the computation…
A reduced-order model of three-dimensional unsteady flow in a cavity based on the resolvent operator
F Gómez, HM Blackburn, M Rudman +2
A novel reduced-order model for nonlinear flows is presented. The model arises from a resolvent decomposition in which the nonlinear advection terms of the Navier-Stokes equation a…
Steady streamwise transpiration control in turbulent pipe flow
F Gómez, HM Blackburn, M Rudman +2
A study of the the main features of low- and high amplitude steady streamwise wall transpiration applied to pipe flow is presented. The effect of the two transpiration parameters,…
Adjoint-based Optimal Flow Control for Compressible DNS
J. Javier Otero, Ati S. sharma, Richard D. Sandberg
A novel adjoint-based framework oriented to optimal flow control in compressible direct numerical simulations is presented. Also, a new formulation of the adjoint characteristic bo…
Passivity-Based Output-Feedback Control of Turbulent Channel Flow
Peter H. Heins, Bryn Ll. Jones, Ati S. Sharma
This paper describes a robust linear time-invariant output-feedback control strategy to reduce turbulent fluctuations, and therefore skin-friction drag, in wall-bounded turbulent f…