Ludwieg-tube extensions and schlieren system for hypersonic fluid-structure interaction investigations
Abstract
In this project we will acquire components required to make the UMD high-temperatureLudwieg tube suitable for experimental investigations of high-speed fluid-structure interaction(FSI) problems. In particular, studies of the FSI induced by the excitation of a compliant panel by a shock-wave/boundary-layer interaction (SWBLI) are of interest. A charge-tube extension, with mounting frame and dog-leg section to prevent temperature stratification, will allow the maximum test time of the Ludwieg tube to be increased from 30 ms to 120 ms; such an increase is necessary to allow an approximate steady state to be established in relevant FSI configurations. A Mach-6.25 nozzle will provide extended capabilities in terms of Mach number, wall-to-edge temperature ratio, and unit Reynolds number. Optical components will also be acquired to allow the installation of a Z-type schlieren set-up for visualization of the flow structures in the SWBLI-induced FSI. These components will include a Cavilux HF visualization laser, one optical table, two large-diameter spherical mirrors with adjustable optical mounts for beam collimation, and two smaller planar mirrors with adjustable mounts for beam-folding on the optical table.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Aug 28, 2018
- Source ID
- FA95501810446
Entities
People
- Stuart Laurence
Organizations
- Air Force Office of Scientific Research
- United States Air Force
- University of Maryland