Investigation of Combined Low-Angled Jets and Variable Wall Geometry for Hypersonic Aerodynamic Control
Abstract
The principal objective of the present research proposal was to investigate, experimentally and numerically, the use of jets to actively control the aerodynamic forces for high-speed flight vehicles. As a test bed, single port injection into a Mach 5.0 crossflow through diamond and circular orifices, at various incidence angles and momentum ratios were examined. To meet the objective, a research program was performed to characterize and control the secondary flow structures associated with the jet interaction flows. The research approach was divided into three main thrusts. First, fundamental studies to characterize the mean and turbulent flow structure were performed. This included detailed experiments at Mach 5.0 using advanced optical diagnostics and numerical simulations using two-equation RANS turbulence modeling. The flow field characterization included shock structures, surface pressure, vorticity and turbulence. Second, the numerical simulations were studied to assess vorticity and turbulent transport mechanisms. Lastly, parametric experiments and Reynolds averaged Navier-Stokes simulations were performed to quantify vorticity control. This included manipulating the jet shock structure to modify the vorticity field, adding downstream ramps to utilize the Magnus force, varying the injector geometry, incidence angle and momentum ratio.
Document Details
- Document Type
- Technical Report
- Publication Date
- May 05, 2004
- Accession Number
- ADA424384
Entities
People
- Charles L. Karr
- Muhammad Sharif
- Rodney D. Bowersox
Organizations
- University of Alabama