Nonlinearity In The Resolvent Analysis: Recovery Of The Mean Velocity Profile And Energy Transfer Paths In Wallturbulence
Abstract
The main objective is an extension of the resolvent analysis in canonical flows, which to date has focused on the dynamics of the linear Navier-Stokes operator, to the nonlinear forcing term. Thenonlinearity couples turbulent activity at different wavenumbers and frequencies through itsquadratic nature, dynamically linking triadically consistent structures and establishing energytransfer paths. Importantly, it also determines the mean velocity profile through the profile ofReynolds stress. Thus, full characterization of the nonlinear forcing in the resolvent analysis isequivalent to making the formulation self-consistent and self-sustaining.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Dec 05, 2016
- Source ID
- FA95501610361
Entities
People
- Beverley McKeon
Organizations
- Air Force Office of Scientific Research
- California Institute of Technology
- United States Air Force