A WAVELET-BASED RESOLVENT ANALYSIS FOR HIGHLY-UNSTEADY TRANSIENT FLOWS
Abstract
This research effort will develop a physics-based methodology that generalizes resolvent analysis for the study of such transient phenomena by considering wavelet (as opposed to Fourier) transforms in time. This will give a means of predicting spatiotemporally localized trajectories that are most highly amplified by the linearized, but time-dependent, Navier–Stokes operator. This effort develop and validate this methodology for a variety of systems, ranging from quasi-parallel wall-bounded turbulent flows to spatiotemporally evolving systems. In particular, this effort will apply this methodology to a separating boundary layer to characterize and predict the dynamics preceding and underlying separation events. It is hoped that this analysis tool will ultimately enable the accurate prediction and control of such flows.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Mar 07, 2023
- Source ID
- FA95502210109
Entities
People
- H. Jane Bae
Organizations
- Air Force Office of Scientific Research
- California Institute of Technology
- United States Air Force