Example Results: Experimental (left) and Numerical (right)
Abstract-
The supersonic combustion ramjet is a leading candidate for sustained airbreathing hypersonic flight within the atmosphere. However, important technological challenges currently hinder development of efficient engines. Two important challenges are inlet flow control during off-design operation and efficient fuel air mixing and combustion. Jets offer a potential solution to both of these challenges. High-speed jet-interaction flows are typically characterized by complex shock structures and numerous secondary vortex flow features. In this presentation, an overview of the results of an ongoing experimental and numerical study to characterize and control the mechanisms responsible for the secondary flow structures will be presented. At the center of the investigation is the Helmholtz vorticity transport equation. Experimentally, detailed flow visualizations, pressure distributions, Mach number contours and limited PIV data have been acquired. Numerically, detailed simulations with Menter's SST-DES closure are underway. In this work, we have characterized vorticity production mechanisms, and we have achieved control of a large-scale vortex pair.
Example Results: Experimental (left) and Numerical (right)
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