Aero-optical measurements in a subsonic, turbulent boundary layer with non-adiabatic walls
Abstract
This paper presents experimental studies of aero-optical distortions due to a turbulent boundary layer over a range of subsonic speeds with the underlying wall both heated above and cooled below the adiabatic wall temperature. A statistical scaling model, based on extended strong Reynolds analogy is derived and shown to correctly predict experimentally observed results. The temperature mismatch between the flow and the wall was shown to have a profound effect on the level aero-optical aberrations, as the heated wall amplifies them and the cooled wall significantly reduces distortions. The importance of an inclusion of the pressure term in explaining the boundary-layer density fluctuations with the cooled wall is also discussed.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Apr 01, 2015
- Source ID
- 10.1063/1.4919331
Entities
People
- Adam L Smith
- Eric J. Jumper
- Jacob Cress
- Stanislav Gordeyev
Organizations
- Air Force Office of Scientific Research
- GE Aerospace
- University of Notre Dame