3 papers
physics.flu-dyn2023
Harnessing the instability mechanisms in airfoil flow for the data-driven forecasting of extreme events
Benedikt Barthel, Themistoklis Sapsis
This work addresses the data-driven forecasting of extreme events in the airfoil flow. These events may be seen as examples of the kind of unsteady and intermittent dynamics releva…
physics.flu-dyn2021
A Variational Formulation of Resolvent Analysis
Benedikt Barthel, Salvador Gomez, Beverley McKeon
The conceptual picture underlying resolvent analysis(RA) is that the nonlinear term in the Navier-Stokes(NS) equations provides an intrinsic forcing to the linear dynamics, a descr…
physics.flu-dyn2021
Closing the loop: nonlinear Taylor vortex flow through the lens of resolvent analysis
Benedikt Barthel, Xiaojue Zhu, Beverley J. McKeon
We present an optimization-based method to efficiently calculate accurate nonlinear models of Taylor vortex flow. We use the resolvent formulation of McKeon & Sharma (2010) to mode…