Computational Hypersonics and Plasmadynamics
Abstract
Several independent efforts addressing simulation capability development and high-speed flow control application were pursued by team members during the reporting period. Control of laminar and turbulent shock/boundary layer and shock/shock interactions was explored with active and passive techniques. Unsteady plasma actuators and laser-based volumetric heat deposition were introduced in ramp and Edney interactions to mitigate integrated and localized heat loads. Separately, porous walls were shown to reduce separation and enhance total pressure recovery in three-dimensional viscous/inviscid interactions. A high-fidelity procedure was developed to couple an unsteady first-principles plasma force model at kilohertz frequencies to full Navier-Stokes solvers. The effect of dielectric barrier discharge-based body forces on excitation of turbulence mechanisms in separated shear layers was investigated. Preliminary simulations were also performed to guide development of a test article for flight testing. State-to-state kinetics simulations were employed to evaluate vibrational bias in dissociation and recombination.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 01, 2006
- Accession Number
- ADA460533
Entities
People
- Datta V. Gaitonde
Organizations
- Air Force Research Laboratory