U.S. Air Force Summer Faculty Fellowship Program

U.S. Air Force Summer Faculty Fellowship Program

U.S. Air Force Summer Faculty Fellowship Program

U.S. Air Force Summer Faculty Fellowship Program

Arnold Engineering Develoment Complex (AEDC) Tunnel 9, White Oak, Maryland

SF.60.14.B1013: Hypersonic Boundary Layer Transition

Marineau, E.

(301) 394-1670

The research topic of interest is the instantaneous non-intrusive velocity measurements in hypersonic flow. As part of the TRMC/AFOSR Hypersonic Center of Testing Excellence, we are developing advanced non-intrusive instrumentation and performing experiments on large scale test articles to better understand hypersonic boundary layer transition, hypersonic turbulent boundary layers, and shock wave turbulent boundary layer interaction (e.g., provide new time resolved experimental data for the validation of direct numerical simulation [DNS], large eddy simulation [LES], and parabolized stability equations calculations). Hypersonic T&E facilities provide forces-and-moments and surface measurements required for the validation of computational tools used to extrapolate tunnel data to flight conditions. Although essential to quantify aero database uncertainties, current measurement capabilities provide a limited understanding of hypersonic flow physics. This understanding is essential to develop improved computational tools (e.g., advanced computation fluid dynamics codes) needed to reduce the technical risks of new hypersonic systems such as boost glide concepts currently being considered for Conventional Prompt Global Strike. Improved knowledge of flow physics requires instantaneous measurements of the velocity field, a capability currently not available in hypersonic T&E facilities. We are developing non-intrusive velocity measurements techniques to study hypersonic turbulent boundary layers and shock wave turbulent boundary layer interactions. Measurements of turbulent velocity fluctuations will be performed at Mach 10 on a large scale hollow cylinder flare for turbulent boundary layers and shock turbulent boundary layer interactions. Experimental results will be compared with state-of-the-art DNS and LES computations.

Air Force Test Center

Douglas Hoffelt
AFTC Technology Transfer & Research Manager
1 South Rosamond Blvd, Bldg 1
Edwards AFB, CA 93524
Phone: (661) 277-9111/DSN: 527-9111
E-mail: douglas.hoffelt.1@us.af.mil