The Pressure Signature of High Reynolds Number Rough Wall Boundary Layers in Pressure Gradient
Abstract
A comprehensive 3-year research program is proposed to address the key challenges to the development of practically useful and accurate data-driven prediction tools for rough wall boundary layers in non-equilibrium conditions brought on by favorable and adverse pressure gradients. The approach is informed by expertise developed over the last 10 years in strategies for highly efficient testing programs, strategies that enable not just the detailed study of selected boundary layer flows, but that provide global views of entire classes of such flows characterized by systematically defined families of pressure gradients. The experiments will combine capabilities in rough wall boundary layer generation at ???????????? > 100,000 with expertise in the measurement of surface pressure fluctuation fields and in novel time resolved fluorescent PIV, providing efficient detection and documentation of the turbulence structures and associated wallpressure signatures and statistics. Pressure gradients will be generated by mounting large scaleairfoils above the rough surfaces. This approach provides an efficient mechanism for rapidly andrepeatedly generating continuous families of well-defined and relevant steady pressure gradientconditions, and exploits highly developed airfoil testing technologies already in place.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Jul 26, 2018
- Source ID
- N000141812455
Entities
People
- William J. Devenport
Organizations
- Office of Naval Research
- United States Navy
- Virginia Tech