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University of Virginia
The primary objective of the National Center for Hypersonic Combined
Cycle Propulsion is to advance the understanding of the critical mode
transitions and supersonic/hypervelocity flow regimes of combined cycle
propulsion by:
- Developing an advanced suite of computational modeling and simulation tools for predicting combined cycle flow physics by collecting into one Center some of the best modelers of high speed reacting flows,
- Utilizing the unique facilities available to the Center and a group of the leading experts in advanced flowfield diagnostics to conduct experiments that will:
- Provide insight into the fundamental physics of the complex flow in combined cycle hypersonic propulsion systems,
- Provide detailed data sets for the development and validation of models of combined cycle flow physics; and,
- Bringing together the modelers and experimentalists in a synergistic way to work on common problems in hypersonic combined cycle propulsion such that the resulting team provides an impact that far surpasses that available with individual investigator efforts.
In order to accomplish this primary objective, we will:
- Develop and implement a hierarchy of novel methodologies for high fidelity simulations of various flow paths. These methodologies range from:
- The most sophisticated envisioned form of LES for third-generation prediction of hypervelocity reacting flows, to
- Several new second-generation hybrid LES/RANS methods,
- Detailed/reduced kinetic models for thermal decomposition/oxidation of relevant hydrocarbon fuels, and
- At the lowest, first-generation of sophistication, "off-the-shelf" methods for production-level simulations.
- Conduct experiments that will:
- Measure reacting flow turbulent statistics and novel fuel-air mixing and flameholding schemes through the development and application of advanced diagnostics,
- Develop benchmark data sets with quantified experimental uncertainty for the purposes of developing accurate first-, second- and third-generation models, and,
- Generate performance improvements of combined cycle systems and develop methods for controlling combined cycle mode-transition.
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