On Energy Redistribution for the Nonlinear Parabolized Stability Equations Method
Abstract
We identify and quantify a seemingly overlook mechanism for energy transfer between adjacent frequency disturbances in the Nonlinear Parabolized Stability Equations method. Physically, this energy transfer results from the finite-bandwidth nature of actual disturbance spectrums versus the common numerical assumption of a discrete spectrum representation. Both quiet wind tunnel and flight conditions are considered and it is found that, for Mack’s second-mode instability, the mechanism is most significant in the 0.1–1% disturbance amplitude range (based on normalized pressure) and is responsible for a 15–30% increase in predicted disturbance amplitude.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Aug 03, 2022
- Source ID
- 10.3390/fluids7080264
Entities
People
- Arham Amin Khan
- Armani Batista
- Joseph Kuehl
- Tony Liang
Organizations
- Air Force Office of Scientific Research