Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 7 of 7 for “"Non-Boltzmann"”.
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Reduced-order modeling of non-Boltzmann thermochemistry and radiation for hypersonic flows
The non-equilibrium aerothermal environment during hypersonic flows is determined by the interaction between a multitude of disparate physical phenomena with varying characteristic time scales. The multi-physics nature of this flight regime renders the task of accurately estimating vehicular …
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Nonequilibrium Shock-Layer Radiative Heating for Earth and Titan Entry
… is modeled using a two-temperature chemical nonequilibrium viscous shock layer (VSL) approach. This model is shown to provide results that are in agreement with the more computationally expensive Navier-Stokes solutions. A new radiation model is developed that applies the most up-to-date …
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Developing methods to construct ring pucker free energy hypersurfaces applied to the analysis of glycosidase enzyme catalytic mechanisms
… Coordinate Forces (FEARCF) method. FEARCF non-Boltzmann simulations of prototypical sugars β-Dribose and β-D-glucose converged to yield free energy pucker surfaces and volumes when using several semi-empirical QM methods - AM1, PM3, PM3CARB-1 and SCC-DFTB. From this, the accessible …
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Uncertainty quantification applied to the analysis and design of a hypersonic inflatable aerodynamic decelerator for spacecraft reentry
… of the transport properties, chemical kinetics, non-Boltzmann radiation modeling, and the freestream conditions. The uncertainty analysis for fluid-structure interaction modeling is conducted to quantify the uncertainty in the deflection and resulting surface heat flux, shear stress, and pressure …
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Time-resolved spectroscopic investigation of N2/H2 nanosecond pulsed discharges and EUV-induced low-temperature plasmas
… simplified interpretations break down in pulsed, non-stationary plasmas: non-Boltzmann populations and potentially misleading “corona-like” estimates motivate collisional–radiative and kinetic modelling. By combining platform-specific insights with cross-platform comparisons, the thesis …
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Towards More Efficient Enhanced Sampling Methods To Study Phase Transitions
… to accomplish this task, such as the grand canonical and Gibbs ensemble Monte Carlo methods, employ the concept of particles insertion and deletion moves or requires the knowledge of at least one point at coexistence. These types of moves are extremely inefficient when dense fluids are …
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Modeling of no radiative emission in non-equilibrium hypersonic flow
… flow effects, the chemical reactions and non equilibrium conditions found in the shock regions of hypersonic flows have to be measured using non-invasive optical diagnostic techniques. The creation of Nitric Oxide in hypersonic shocks can be measured both by radiative emission and …