Transonic Flow Control over Engineered Elastoacoustic Subsurfaces via Generalized Impedance Boundary Conditions
Abstract
This collaborative proposal intends to investigate passive flow control strategies based on tailorable phononic metamaterials capable of responding to fluctuations in tangential and normal stresses experienced by the skin of a transonic vehicle. It is speculated that- turbulent drag reduction can be achieved by allowing a purely real tangential admittance; boundary layer transition can be delayed by detuning Tollmien-Schlichting waves via complex tangential impedance; finally, boundary layer separation can be delayed by triggering Kelvin-Helmholtz instabilities via tuned wall-normal impedance (already proven in the subsonic regime).
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Mar 07, 2024
- Source ID
- FA95502310564
Entities
People
- Mostafa Nouh
Organizations
- Air Force Office of Scientific Research
- Research Foundation for the State University of New York
- United States Air Force