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Ab initio computation of gas radiation properties for re-entry flow simulations
PI Eric Perrell
CO-I Fanny Thomas
CO-I Spatika Iyengar
Renewed interest in planetary atmospheric entry, descent, and landing underscores the need for improved physics modeling in computational fluid dynamics. From a recent NASA solicitation, “the current state of the art for predicting aerothermal environments for planetary entry are dependent on physical models and underlying numerical methods that are, in many cases, two to five decades old.” Uncertainty in experimental data used in radiation heat transfer computations leads to, “over-engineering” of entry body heat shields, at a large weight and cost penalty. A method for computing gas emissivity and absorptivity from quantum mechanics principles is developed.
Read moreCategories: Faculty-Staff
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Comparison of Classic Guerrilla Warfare With So-Called Fourth-Generation Warfare Using Agent-Based Modeling and Simulation
PI Jerry Sink
CO-I Mark Abdollahian
Fourth-Generation Warfare (4GW) theory shares many characteristics of classical guerrilla theory (CGW) in security studies literature. Proponents claim that 4GW is a significant evolution that overturns traditional measures of military power, while critics counter that 4GW is simply CGW in an updated context. The two strategies are modeled in an agent-based simulation to evaluate similarities and differences in speed to victory and territory controlled over. Emergent behaviors are compared with historical data.
Read moreCategories: Faculty-Staff
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