Welcome to the new version of CaltechAUTHORS. Login is currently restricted to library staff. If you notice any issues, please email coda@library.caltech.edu
Published June 2016 | Accepted Version
Book Section - Chapter Open

Phase relationships between velocity, wall pressure, and wall shear stress in a forced turbulent boundary layer


A large scale spatio-temporally periodic disturbance was excited in a turbulent boundary layer via a wall-actuated dynamic roughness. Streamwise velocity, wall pressure, and direct wall shear stress measurements were made with a hot wire, pressure microphone, and a micro-scale differential capacitive sensor, respectively. Phase-averaged fields for the three quantities were calculated and analyzed. A phase calibration between the various sensors was performed with an acoustic plane wave tube over a range of operating conditions to validate a direct phase comparison between the respective quantities. Results suggest encouraging agreement between the phase of the wall shear stress and velocity near the wall; however, more refined velocity measurements are needed to make quantitative comparisons to the wall pressure. Overall, this work highlights the potential for wall-based control with applications towards reducing turbulent drag.

Additional Information

© 2016 AIAA. The support of AFOSR (grant FA 9550-12-1-0469, program manager D. Smith) is gratefully acknowledged.

Attached Files

Accepted Version - KRosenberg_aiaa_aviation_final_manuscript.pdf


Files (2.0 MB)
Name Size Download all
2.0 MB Preview Download

Additional details

August 20, 2023
October 23, 2023